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L U EI r✓ M t ,y r ti u O n I13 v r 1.4 r ~u'6J~/ f°~; ld s 'I i MW~ M~vbvt,M y ,n rl n' tl E 1 G~ {i $ ,ci fj- t; U f i ~ w t1 v ~ o U ✓ to ii ,1 ry " ✓ ~ 0 c s o p C) ' OJ a ij~ If} " u 8 c. tl n fbl.~ 8 u' T A F ` •.vn ✓ !o n Id per' i~ „ ^ o o N t r1 jc, G E r!/01 cpv r~~ c to t iil L ¢ w' n FIB N o"'rl vrG (tj t ft.•~ n; C? O O En o. f U U O •r N E} M i v '6a ct1 .4, ark 8 r E4d • s c n ` 16 A "i4' REM M)11~~~ I.AW C)F IICCS MV CALL, PARKHURST & HORTON Ili 00 MI IIC AN IIL1: BANK f7U It. UI PIO II060Y It MVCAIA pAL.LA3 7GxAy 75201 PAUL n, 110117nN Jn,111 D. MGCA" (1191.19111 PP.Tcn IA WIT Ante COU[21A 7400001 MI61Anb PAMOUAIT(1001-19111 IIOY M. POINOCTY !;(.AIICI,ct L CAOWC II/t11 111/1 rllclrnn0 c POOITKII Il. CIIAn6L'A AO11 b1A11 January 21 1.980 Mr., Brooks Holt City Secretary Municipal 13uilclitaq 215 L. MaXinnoy Street Denton, Texas 76201 Dear Brooks City of Denton CortiCicates of Obligation, Ser.l.es 1979, $1701000 _ _ We are enclosing herewith for the City's~permanent~ 1 records the transcript of Proceedings authorizing tho inbu- anco of the captioned Co t.ificates. Sincerely yours, McCALL, PARKHURS111 & HORTON Paul 13, Horton PB11 ! k Lnc. l2 3196 CHANGE OR EXTRA WORK ORDER 0 C PROJECTI Irrw lo) TroaLmont 111anL CONTRACTi I{ r. (i;l 11. OWNERi r,; Ly of bon Lon CONTRACTORi Iflin IorR Constniotion Co. i CHANGE ORbER 1.10, 1 DATEi Oetobor lf;r 1963 CHANGE OR EXTRA WORK TO BE PERFORMED 1teLurn Hludgo Aimp Station drain truugh Wxo, spnoo hoators In sludgo pomp motors $30.00 3. Additional strand barbod wire, or fence 72,05 4. Drain piping for primary slttcigo pumps 23,00 54 Anohor bolts for pumps 2300 6. ,liolocate aeration basin spray pj.pe braoo 52400 1. 1xtra plastic wnterstop for future consti%otion 12.25 8r lWinove diffusors front noration banin 213.60 r 9. lnotall hoaLi.ng cablo on prossttro tank controls 66.95 10. BxLra wire to Rootif.l.ow motor $60!1.15 Not (Incroaso) (dio"oso) in contract amount $604.;i.S Rovisod contract amount $411,329.15 Not (Inaronsc) (decroast) In contract f1mo of compfotion Nono Rovisod contract Brno of complotlon pro Joo L Completod Recommondod by Approved by OWNER PREESE, NICHOLS AND ENDRESS oy- Approved I TRACTOR 21t-.Own bL.owner ~ --Canlreolor ay_ ! -F N, A U. Ofllto 72 ahtale Doppe. of Ifoalth Water Pollution Control Div. dEAUMON id _ z i~ r, ~ _ hIICC _ ~ . _ 3 RNAAD• Y DAMES \ J PfINItLE DRIVE 7 x_........ - ~x W I O 2 ~ MALONE ~ I._.. ~ - 3 ~ - ' y . ~ ~ ` _ 1 HIGHLI~NO PARK F ...~_,I ~,ND PARK RD• 4.y*~'~"'}_y_I-+11.t~ d _ - iAYG EC OR I ~ ~ 1 I u..W._ _ ~ 9lJ4gTATION 51TE c9 . U ,.L_..::__._._._ ~r ~ >r ar [NO. OATS ~_~~~REVIlION~ BY JCK~pp r..rrr a~~ DrIJTCIw, TRA, r A~~A~~~ IL 5 XYh" I 60 VY T48$mlSFIC'N LINf,; i ~ M j ~t>,A~Hic ~cAL~~~r !j Y~!'iiY.If~f~~W~W11~yy~~1~I~Yrr I TRIMISM K3,0,1011 LIIJI ROUTING G ~O i i 1 DAT'BLACK & VEA'T'CH l1VORAWW W6. z C-3IU35• F,~o--,j'L,TING D POR CONSTRUCTION DEpT, HEA DES. ENAR, CHECKED DRAWN PROJ, NO ENGINEERS KANSAS CITY. MISSOURI cl-162 ?".I r ti~ tt~ E T LOaP LINE )J / POWER ~~-f' B r, d / w PLANT 3VBSTATION :I Irk y N Oa ` r~~ i e . r* i - NEN!T0N RUDDELL _ J • Vy s C i it E3I':11 NVE, BELL 'AVEI .I~ 41+1~1-I N I I I+4 0 z f 11 - _ 1 J cy, i J ! I 1 - 't i EI.M ELM' - _ 90LIVAR _ } u r ~ ~ _ - .t _ ALICE i - ~ 1 u ~F - INSURANCE CERTIFICATE THIS 16 TO CIRTIPY TNAT the polity, if any, dcectlbod in Item I hereof has barn 6r'iod by the Teal Imployers' Imuwnco Association as Insular, that The polity, if any, described In Elam 2 horoef has been Issued by the Employers National Insurance Company, as Insurer, and (it that the polity or polities, If any, deetrlbed in Item 7, Item d, hsm S, or Ilem 6 hereof haws been Issued byy the Employers Casually Companyy, as Insurer, to the Insured dooldnated In INTO carfificate, and that e"eh such polity or pollster, roblIed to the llmlls of Ilablllty, e>tciudem, prcvltlons, cenditlum and other terms thereof, are In full force and effect as of Iha dale of this certificate with Nectlve dahe as shown hecelm If any such polity is cancelled or Is not renewed of the ugvott of either the Insureri or The Iroursr, or If any such policy or any sanswa( thereof h Ihonyed In any manner err for any lease" so at to affect this ♦ silillcate, ton days prior written nolks will be malled by the Insurer to the eorllNcata holder, lharatn named. THE CIATIIICATION OF INIURANCI AS SHOWN IN THIS C(AlIFICATE REFRAINS IN EFFECT UNFIT TAM DAYS' PRIOR WRITTEN NOTICE 11 MAILED TO THE CIAfIFICATI HOLDER (m INs address shown below) AS AEOVI PROVIDED, or If a data Is shown lit the column headed "ea Irallon date;' such Insurance shall stili skher upon such date, or upan the dale specified in written nellla naked ton days prior therola, whichever dale shall first occur. V NAME AND ADDRESS OF cntTtrICATE 110LOER EFFECTIVE I)ATE OF THIS CERTOICATC Febxuar 19f2 ' i3dUES'~T.. City of Denton Trenton Texan Texas 1; mp(oyera' Insurance Association DALLAS, TEXAS 6Y / All of a #protonfatTye) - c~ NA-ME AND ADURESS Or ENSURED ITyped)_ _ f -g - Employers National Insurance Company ' DALLAS, TEXAS Utis 7AuliiarizeA Ae`~rnitinlotivel _ Elm Fork Conet ruotion Compmra Ina se Pa ois >~c'.t 13106 ~stpna,l(_ _ Employers Casualty Compuny / ' 6ALLAS, TEXAS DY utJI. 11 T 111 se`nfattve) ISionad} C'f 6'e IRS . 7V= F L I A IT ere He Mess OYS. SAU e EeDale Person Aeel STATtl AND . ne PoIItYNumbar loaadaNnt ier6ellty LOCATION OM UN RATIONS Ki OrAggreEats CovAaoe [ Fully Co orkm C MquiremMt of ~ 11611 UMes Workman I ompomsaHon taw A Coverage nlua ce 611 1, OF TlKAf k ft R And Renswal X X X $Z1S,000 #ZB,o00 Cov~a~raEa fu11y Compll Wlth Raqulrrtienh ol~fata LaN N ¢ Cow,aee - Dhw~bnly--- u v4 D And Renewal h _'Thereof. X X X Lj~~19~0 $25,000 Coviro6o Fully Compllas WIH1RsqulnmenN 3 aF State ow u ~ blsee>ti'Oely - p Coverage And Renewal Thereof X X _ X _-..._._$25,000 1130000 TmX - godlly In)ury 3 P~L~'~ COVe b 535522 s 103 QOO- _.>NOJ 040 - rioaucM omw U S.A. LTS TERRITORIF{ OR V.0 0, 11 y And konewal PbSSI~SION AND I AOA amage Thereof X X X eoduy Hu Inlury 53 2a, :100000 .#_3CC'! _ -Appllieble U,S,A, ITS T'IR IT0111Et OR - 7 AA POSSFlSI011S A D F AOA P,operty AnThA lit x X X Not Dantele $100j000 ApplltobN And Renewal TMceef ; ; _ _ r # REMARKS Contxaot 61*.4 City at Donton soxage Treatwnt Plan IECO459C 11-1.601 Typewriter{1591-Miman;a592-Dltle;4593-Dvpkcatorl • F INSURANCE 7 GiRTIFICA'TE THIS IS TO CERTIFY THAT the Policy, If any, deseribod In Item I hereof hat boon hived by the Texas Empleyuc' Insurance Atceelalion as Insurer, that tho policy, 11 any, described In trim 2 hereof hoe been Issued by the Employers Natlanal Inwrance Company, as Inrvur, and/or that the polity or ppelldes, If any, deserlbed In Item S, Ilan A, hem 6, or Hem 6 Fittest! have boon issued by the Employers Casualty Campbell, as !muter, to the (murad dulonated In trill coilllcate, and that each such policy or paNtlob tubletl to the Ilmlte of Ilability, excluelons, provHlani, conditions tied ether terms Ihenol, are In full force and effect al of the date of this tertifitnte wllh effective duties as shown herein, If any ouch policy It contdbd or Is fief renewed at the roclueot of a either the Inured or the Insurer, or if any such pollcy at any ronewal Ihereol Is thumped In any manner or for any reason to tie to affect this Cvllfltote, fen day;' prior vrltbn nolice will his mulled by the Insurer to the coAifitate holder, herein named, YHE CERTIFICATION OF INSURANCE AS SHOWN IN THIS CERTIFICATE RIMAIN6 IN EFFECT UNTIL TEN DAYS' PRIOR WRITTEN NOTICE IS MAILED TO THE CEATINCAII HOLDER (at the address shown below) AS ABOVE PAOVIDID, or If a date Is shown in the column headed 'Dx~Italian dote;' such Insurance shell expbe either upon such dab, or upon the dab specified In written notice malled ten days pilot thereto, whichever dote shall Met occur, NAME AND ADDRESS OF CERTIFICATE NOLOER ~ EFFECTIVE bATE OF 7HI5 CERTIFICATE 'ts~9~~D ,-C7 City of Denton Dontoner TsxaulE v Texas L+rnployursr y~ Insurance Association T AILAS,TAXAS `tl by - . 11irnJz epioinnttitlvej ISIQnId _i,-c.~i•-crrr ' NAME AND ADDRESS OF INSURED *0' Employers National Ineurxnce Company DALLAS, TEXAS + f y_.. fAiD ark Cenatruetion CorELpNty~ Ynoe DY -.Fixad fto raanlollvdl P• Ce Pox 23186 (Stpged)_ . _ riallpr~ moxaN .(typn~~l llnployerJ Casualty Company 1,A9, TEXAS OY Au ri~xeyil~ia/~~-"V`r_lonllal/lvo}__. INSURANCE IN FORCE (TY )o,t Ere Fallon Y p~ III Fla Xlna PolltvNumbor Date Each 11 EoeF Pf policy STATE AND • A Atcldon>-__„ Or AEAreyote , LOCATION OF tlPlRA'flONS Coverage A 42611 ila Compiles 'mC pn of 4exae Workmen; Componiatialm eatle» law Coverage 1I Dl seats Only STATE OF TEXAS P 4 6 And Renewal I Thsroo} X X X $25+000 I $25,000 Covlpaee o fully Cam f With Requlnmenls of State Lew 3' le cover oes Dlitais Only 7i And Rtnowal @ _ . ...Thereof X x X $25 000 $260000 tire j Cover - 0 FunY Cor"PlIrk With ReQUlromenM iV ~ g A of . 01 Slats Low Dbeo~c bnfy' Coverings AnTherreof al X X X $25,000 itainfi gedify ....._26,000 J us.-9 t A IniarY 5355?z = xao dC0 Ci? Roo T t #ti~n• Prapbty And Renewol f - U,%.k ITS TIRpITOktES OR bamape Thsreot X X X PoSSErSIONS A11D CANADA Itsin d - '00004- -too OW NOT 9y y Pioporvy `3552x0+ `S'~~Q~ _$.3,v~+, APPncesoble U,S,A ITS TIR41YORIES OR & 1 Drmnpo And Renewal ~i M Not PO3SESSIOtIS AND CANADA Ihm 6 ......Thereof x.. x. x $ 10oelow !P 11Fabb_. S $ 6 _ And Renewol Thereof REMARKS Contrant 62-11 City of 1*aton Bowano Troatmnt Plan TTCpd 9b 1,-l•60l 'fype*wit(4591Mirneu, 45Y2-DIIN;41L,ya 7UpIICUt0rI rya 1. V INSURANCE CERTIFICATE THIS IS TO CERTIFY THAT the pollry, I} any, deuAbed In Item T heruf has bun luuod by the Tomas Employer' Inwronco Auodallen a1, Inwnr, Ifie1 flee policy, II any, Ilucrlbed in Gem horwf hoe bran luuod by the Imployne Natlona) Insurance Company, to Insurer, and/or that the policy or Pellrlel, 11 any, descelbsd in Nom 7, Ilom Al, Item I, or fun 4 hneof have boon Issued by the Empleyers Casually Company, as Insurer, to the Incuud dadp,raled In this cutlllealr, and that sa6 such pollcy or pelicles, sublIed to the limits of liability, sxcluslo s, provlolom, conditions end ether terms thereof, are in full force and effect me 11 the dale of this eullllrola with ef{edive dates as shown herein. H any such Polley Is cancelled of It mat snowed at the roquoll of she Insured or 1111, Iasuror, or It any ouch pollcy or any renewal thereof It changed In any mentor or for any reason eo as to affect this Cutfflcalo, tan days' prior wrlnen notice will he maitod by she Insurer to the culHlcate holder, herein named, THE CERTIFICATION OF INSURANCE AS SHOWN IN THIS CEANFICATE REMAINS IN EFFECT UNTIL TEN DAYS' PRIOR WRITTEN NOTICE IS MARIO TO THE CIRTIFICATI HOLOIR (as the address shown below) AS ABOVE PROVIDED, or If a date It shown In the, column headed "ox IraHgt dale," such Insurance chat explre either upon such date, or upon the date spoelfled L~ In wrltlon nollae mailed ton days prior therelo, whichever date shall first occur, p 14AME AND ADDRESS OF CERTIFICATE IIOLDE4 EFFECTIVk DA1E OF THIS CERTIFICATE ire b City of Trenton b City of Denton k)ont w# Tauw 'Comas I:ueployore' Insurance A!lociatlon ' DALLAS, TEXAS fAu'thorlxcd7tepracenlntlvej~ NAME AND ADDRESS OF INSURED Employers Natlonal Insurance Company .,e. M DALLAS, TEXAS six 1'o* 000tonliotrion fWWfw! 'blur' OY (Authorized Rbhresanlnlival.__......__,-_. pe. ass P" 133M AS-k"'l) ITyead} Employers Casualty Contpatcy DALLAS, TEXAS IAU1harizod Aonrer,untuilvv)"~ ` _{Slpnaci) - iF7IU1t7F~1 TF7 Mill C 1`GCTT7 lyyu~';g 0 i . a M F G ~i.1104 }'1ji+l'o Exphatlon Kinq PellaY Number Oate Secli p` E h _ ofi'olFcy STATE AND If~inl Verson I Aaeldont OrApgrgele LOCATION OF OPERATIONS CoveAraoo Fully CompUes With Roqulremonl of g dp~,e, To at Wothmens C°mPSMatlon L°w Tt _ R Covusge wuir'~inly 61 STAY& OF TEXAS 3 Is ( STAY! Oi TEXAS 5 And Renewal Tbuuf 'Ifom7 Coverage X MAO $25,000 A Fully Compiles With Requirements of State Law Coverage I Ohialo Only---- ~.°e ~ B And Ronowol Thereof ' .m her x -x x 25r000_.. 1iZ5,000. Covro~roge Fully Compile WItF{ Requlremonh " 9 of State Law St .11 _ _ M CL Cavorage UCianse f~nly 6 E .5nd Ronowol Thuuf saint'" . . - _ . 25,000 $25,000 Bodily - LC Injury 055" 100 000 C4 ~ PiTSA,7e1iUhF CANADA hk u Property s Y~ UST A ITS YIRpITO ! R rr,333 Dama a And Renewal 7(im d- a Th°ruf x x x S DOS9IIsI0lJS At? r Y ..wy~~ryy~ odity _u In err ,7',~~17rZA 6 ~vx./~+Sf .70 Mg A N able Properly PP US•A ITS TTlaplrepllt OR R 6zmoge AnThanoi nI x x kas P6SSFSSIOHf AND CANADA i APalic0616 And IMwg1 - Thereof REMARKS Contrfllei 61ah City of lldnton nfmo Te."taDlta nm TEC04590 Typayrritot (4571-hItweo; 4592-Ditto; 459,14)wphcutor) CITY OF DENTON, TEXAS SEVIAOE SYSTEM IMPROVEMENTS CONTRACT NO. 61-4 SEWAGE TREATMENT PLANT Bide to be receivedi 10100 A.M., January 3, 1962 ADDENDUM NO, 1 A. §B.CIFIC TA IONS 1. OPOSAL a. Page "b" - Delete the heading "ALTERNATE BID" at top of page. b. Page "d" - Delete the line 'TOTAL AMOUNT OF ALTERNATE BID (Items 2 thru s d. TS 10,. 106 • %TAL EM STRUCTURES L, pipe a ra l s Change the first sentence to reads "Pipe ♦ handraile ahal be located as shown on the Plans end shall be fabricated of 1-1/2 inch standard weight galvanizod eteol pipe oitli all joints of the flush type." 3. ITEM N0. 209 - PIPING AND PIPEVORK B. Cagt_Iron Pine.gnd_Fittingss Add the following to the first paragraphs "Joins shall be Type I or caulked joint and Type III for mechanical point. "Tytoq Joint" as manufactured by United States Pipe and Foundry Company, and/or "Fast-Tito" as manufactured by Amerioan Cast Iron Pipe Company, will be acceptable." Add the following paragraph to and of Item 209s V. Cootintts All oast iron pipe and fittings and non-galvanized steel pipe and fittings which are to be installed in an exposed position shall be thoroughly cleaned of all rust, mill ecalo) or other foreigi, materiel and given a shop coat of either Pittsburgh No. UC-30002 lead Chromate or Pittsburgh No. UC-32200 zinc Chromate. This coat of paint may W applied in the field with same cleaning precautions as described above. 4. NO. 214 - SL DRYING MW Delete this item in its entirety and replace it with the sludge drying bed specifications (Item No, 214 . Revised) included herewith. 0 1 • 5. SECTION V _ AppF~rn7x a, Iru'ormationka; Ynstruotions to Bidders - Add the nriclosed pages o , and f b. de um No. 2. - Addendum No. 19 dated Nov, 14, 19611 is a part o ection V (Contract No. 61.3) and is enclosed herewith. B. PLANS 1. hat No S The following is to clarify the locations at which some of the piping ohangus from C. I, pipe to concrete sewer pipet a, The 12" recirculation or drain line from the 30" conorete by-pans line near the final clarifier to M.H. in the 24't V.C, outfall line shall b e C.I. Pips from the 30" by-pass line through the 45o bend which is shown to have a center line elevation of 546,71. The remainder of the line shall be concrete sewer pipe ae indioated, b. The 18" waste sludge line from the Return Sludge Pump Station wet well shall be C,I, through the plug valve and nipples at the pump station, The remainder of the line, including bends and tees, shall be concrete sewer pipe, o. The 24" line between the Primary Clarifier and the Aeration Basin shall be C.I., including the connection into Manhole "A", The 36n► 3011, and 24" by-pass linen into Manholes "Al' and "B" shall be oonorr to sewer pipe. d, The 12" line from the overflow boat of the aeration basin to the 30" by-pave line shall be C.I. 2, Sheet No# t Add following note to Pump Shaft Erasing detailet "They am shall be fabricated in a minimum of two sections to facilitate handling in field. Angle bracing for the beam shall be field welded into position." 36 -etta-No, 6 a t Add following note to Basement Alan Udall Reinforoing, to app at center of three walls of basements "Rein- forcing in outside face of walls shall be No. 5 bars at 11" c/o vertically and No, 4 bare at 11" c/o, to lap with No. 9 corner bare, horizontally," Seot.lons A-A and C-C shall be corrected to conform with thi.o note. Rear wall of Bni-minutor vault, Basement Plan Wall Reinforcingi i The hooked-horizontal corner bare shown in this wall shall bo of the same size as the long horizontal bars ani shall be spaced alternately therewith. 2 4 • Add • 8truoture shall wbe~comnote to Sheet No, 71 "The Raw pletely baekfilled befori; theswet with water." gwel is`rilled 4, She is No. 8 an t Reinforcing shown in the 2" xonolite concrete fill roof slab shall be wire mesh. 5 Sheet No. 111 Section C-C The hooked bars in the top of the sloped po~ wet well bottom slab shall be No, 8 bars on 9" centers. 6. Sheet No, s Add following note to Roof Water Tank details= "The T 2.5 beams supporting the tank shall be located directly over, the panel points of the bar joists regardless of type joist used. The 41-6" dimension between the two beams shall be varied if necessary to nimn!+t tbis condition.,, 7• e s p, 15 a„,a 1s Add following notes "All slabs, beams, grade ems, blower bases, eta., shall be poured on 8" minimum thickness carton forms. The .forms shall be corrugated fiberboard carton forms as manufactured by Sav©way Carton Forma, Ino,0 Arlington, Texas, or an approved equal. The forms shall have sufficient strength to support • the weight of the concrete to be poured on them. All the forme shall be left in place after the concrete has been poured," 9• et No, ?4s Cross Section .The short transverse bars in the • bottom of center section shall bo No. 7 Bars at 12" coo, alter. nated with the long transverse bare. All footing reinforcing steel in the left side footing in this section shall be changed to be identical with that in the other two footings, Longitudinal Section . Add haunoh at base of atom on ut e face of Influent Wall and B fluent Wall. Haunch details shall be identical to that shown for longitudinal walls. Sectional Plane - Corner Details - The dimension shown from inside of wall to and of hooka d bars shall be changed from Y-01' to 51-011 in all three details, 10, t Nom ?s This sheet, "Sludge Drying Beds", shall be deleted from the ens and the chest No, 32 (Revised) included herewith shall be substituted in its place. Specifications for the new drying bed details are included in this Addendum, Also included herewith in a supplementary grading aheat showing the revised grading and drainage around the sludgy dryinw beds. io Notes Bidders ahall acknowledge zeceipt of the Addendum in t ;-P Q MEMO NICHOLS AND CNDRESS • Decemberng 9t i9Glet's ITEM NO-1 _SUM DRYING BLi1S (AFVt~cn1 A nerals The sludge drying beds shall be constructed in accordance with the Plans and the governin requirements of these Specifications. All conotete shall be 3000 psi Class A) unless otherwise noted on the Plans. Construction of drying beds will include preparation of the site. This includes all cutting and filling of this area to the required elevation. This work shall be done in full accordance with the item "Earthwork" in these Specifications with the exception that all fill beneath the sludge drying beds and roadways shall be compacted to 954 Proctor Tensity. Preparation of the stabilized sub-grade for the drying beds shall be as specified in Item No. 214A _ "Preparation of Sub-Grade for Sludge Drying Beds", which is attached hereto. B. to bo s Redwood material of acrceptable quality shall be used as step p auks at the truck entrance as shown on the Plans, C. Drying Bed Medial 1. Qgatm~ls This work shall include furnishing and placing graded sand and gravel and the drains as shown on the Plans and specified herein, ® 2. ilt &a s Sand shall be clean, hard, sharp grains of siliceous material, free from soft or flaky particien, shale, loam, organic matter or other deleterious substances. Sand shall pass 1/4 inch soreeni it shall be washed and graded so as to have an effective oize ranging between 0,40 and 0.?0 mm. and a uniformity coefficient not in excess of 4.0. Torpedo sand shall be of oize 0i8 to 1.2 mm. and placed directly on top of gravel at a depth of one (l) nch, 3. ril er Gravels Gravel shall consist of clean, hard, durable rounded rook fragments free from soft, Friable, thin, or laminated pieces, loam, and organic or other deleterious substances. Gravel shall be graded and placed in layers as followas Bottom of drain trench to top of trench 1 " to 2" uniformly graded .1 mop h~'~1,nyor, to 1" uniformly graded ' pea grave]. Extreme care shall be taken in placing of gravel to avoid damage to the drain, D. shear O,ijt~jjs Furnish and install cast iron shear gates on sludge disilhhrr l non as shown on the Plans. Shear gates shall be Catalog V A-2920,.6 flangod frame gates as manufantured by the Mueller Company, Decatur) Illinois. Furnish a two foot lift handle and catch with each shear gate. END OF ITEM 214.1 • ITEM NO. 214A - PREPARATION OF SUB-GRADE FOR SLUDGE DRYING BEDS • A. Deapriptiont After filling and compaction of the sludge drying bed area is complete as shown on the Plane, the base shall bo soarified to a depth of six (611) inches, then wind rowed, bladed and prepared to receive the lime for stabilization. Full depth will. be six (611) inches and width as shown on Plans, The subgrade shall than be pulverized com- pletely with an approved pulvimixer until all lumps and clods are thoroughly pulverized. B. Method of Apnlying Lim©i Lime shall be applied to the prepared sub- grade so that the Initial operation can be completed during the same day. The application of the lime in the subgrade shall be accomplished by the method hereinafter, called the "Slurry Method", The required amount of lime and water shall be (,onbined to form the proper mtxtur~e for a by wei&+, lime application. 0. Apoli,oatlon of I,ime to Subaradel The slurry will be applied with an approved distributor or water truck by making successive passes, it necessary, to apply the correct amount of limn. The distritratcr or wator tank will be equipped with an agitator to keep the slurry in a consistent • mixture. Initial Mixing with a Disk Harrow will follow lime application immediately, After initial mixing, the subgrade will be lightly comps ted • with a pneumatic roller to protrot against rain damage, The eubgrade will be allowed to cure from 24 to 48 hours to permit clay clod disintegration. At the conclusion of initial curing, final mixing shall begin, The lightly compacted subgrade will be soarified to the required depth, A high-speed rotary mixer, such as a Seaman-Andwall Pulvimixer, will follow until all clay clods will pass a one-inch screen and 60-75% of the )ub- grade material will pass a No. 4 sieve. Prior to final compaction and ouring, an accurate moisture content toot will be made and the material brought to optimum moisture, D. ~FFi__n__al, C9m ictio1! Final. Compaction shall be accomplished in single ar multiple lifts, depending on the equipment used. In either case, the subgrade will be compacted from the bottom up to at least 95% of Standard Proctor, Moisture -done! ty teots will be made continuously during com- Pao`"i.ort . After final compaction has been attained, the subgrade shall be moistened, if necessary, shaped to f intil lines, grades, and arose-eection and rolled with approved rollers to the extent necessary to provide a dense, uniform nurface, free from compaction planes, • Following Final Compaction and Shaping, the area will be closed to all heavy traffic and allowed to cure for 5 days. At the eonoa.ueion of the curing period, the 4j" concrete slab may be constructed. • r L. MeaeuremontQn Pa nont3 The preparation of eubgrade will not be . a pay item. All ,abor, tools, equipment, liMe, water and all incidentals necessary to complete the ,job, shall be included in Bid item No. 1 Lump Sum Base Bid for construction and completion of the Sawage Treatment Plant, The limits of prepared subgrade shall be the entire area of the sludge drying beds and nine (911) inches beyond the back of the outside line of the structure. DID Oi ITE14 N i r 0 • is furnished it will be approvable as the particular trade name was used for the purpose of establishing a standard of quality acceptable to the • Owner. Wherever the term "or equal" is used it is understood to mean "or approved equal". 12 FaghkV for Shjwnts The equipment under the specifications shall be shipped in such a manner as to insure arrival at destination in an undamaged condition and shall be acceptable to the freight agent in compliance with the current issue of the Consolidated Freight Classification. All equipment and parts shall be suitably protected to insure against breakage or damage in transit, 13. Dolivery Point and Upl2p&iMi Squipment shall be delivered by the Contractor ,o „ care a a designated railroad spur within the City of Denton Upon delivery, a representative of the City twill inspect the equipment, and in the event of visible damage in ship=nt, the Contractor will be so advisod in order that claims may be made. The City, with its own forcer or by contract with others, will unload, transport, and install all equipment and will be reepoasible for any damages due to such unloading, transporting and installing. The Contractor supplying the squipatent shall be responsible for the proper funotioning of installed equipment as not out in the Detail S cifiorAtions and iri meeting this responsibility shall render such assistance during installation as customary under procedure which ardinarily prevails, 14. Bop aaemsnt of Defbo$kye tortes N the event or failure of any part 0 or parts oft equipment during he first year of serviee, due to defective material, design or workmanship, the affsoted part or parts shall be replaced promptly upon notice by the City, with new parts delivered f.o,b., Denton, Texas. All replaoemant parts shall be provided and delivered by and at the expense of the Contraotor. 15, Pa tcu ;gotgns, M is tow If the Contractor is required or desires to use any device, mater a or process covered by patent, trademark or copyright, he shall make suitable legal agreements or provisions for such use, and the contract price shall, without exception; include all royalties or coats required by reason of such use. The Contractor and his Sureties shall indemnify and save the Owner harmless from any end all claims for infringement by reason of the use of any devioe, material or process in connection with the work agreed to be performed ur* r these Contract Documents which is covered by any patent, trademark or copyright, and shall indemnify the Owner for any cost, expense or damage which it may be legally obligated to pay by reason of such infringement at any tiros during or after the comp',~tiun of t1ut work] provided, however, that the Owner will assume the responsibility to d+2end any and all suits brought for the infringement of any patent by reason of the design or type of construction specified in the Contract Documents, and to hold the • Contraotor harmless an acookat of such suite, 0 d i 16, I t o to be ubmitte 4r a i The bidder shall include with is moss descriptions of a materials, installation information, • etc, which is normally furnished to a Contractor Preparing a "Bid" for a project or this type, The data shall include a complete list of material and equipment, drawings and oatalf-gue information, weights, installation data such as amount of welding, 6: too of individrAl eeotions, delivery schedules, and other pertinent d9 x, The inform,1k-.1an Shall be sufficiently complete for evaluation by the Owrar, 170 1o at1 C i The Manufacturer and/or Supplier shall be responsiba or pro special tools for all items of equipment vhich require such, For all recorling type inatwamenta there shall be furnished one ysar's supply of ch ,*to and ink, ls.t The o~tWu _ ~ The Nan~uaotgrer a urns services a aoompownt '~~P Iasi mant! x representative of the manufacturer for all items of i technic equipment not requiring such sere.±- is ty of , except installattio and adjustment. This service if t;,r the to its cif insuri of on lotion ask! adjustment of the agui rpurpose of insuring ! personnel instal. in proper maintenance and oars of theeqaaentl fo uipmentlifo operating ~srsor making ohaak tests ests and ma:1cing reooomendations for obtaining the most efficient use of the es:#uipiwnt. No definite time on the job s required for these technical representatives; however, they shall be %wde available at such times, .and over such periods of tiiae, as required to accomplish the speoified results. It is not anticipated that an undue amount of time will be required on the part of a representative of any one type of equipment. A product of a mAnufooturor who does not oastomarily furnish adequate technical service for proper installation and use of their equipment will not be approved. 190 a , ",0! The successful bidders shall submit~oner four cop ee each of all shop and erection drawings and schedules, schematic or system diagrams, outline aid foundatio# or attachment drawinga, data sheeta, catalog outs, bulletins, or other descriptive material as is customary or as may be speoifioatlly required by the Engineer for each. The drawings or other required descriptive material will be examined and approved, oorreoted, or rejected by the Erigineer with reasonable promptness, All rejected or corrected material shall be revised and resubmitted until approval is obtainod, Delays caused by such rejections wVII not be con- sidered cause for extension of the contract time, Approval by Engineer indicates general complianoe or aoceptabilityl however, it does not relieve the Contractor of final responsibility for proper dimensions, ohuracter, quantity, quality, strength or sufficiency of the items involved, Waivers or exceptions to the plans and cpeoifteations may be validated only by writing from the Engineer which specifically, identifies the feature and i no such waiver or exception shall be allowed as a result of omissions or oversignts in examining and approving the above drawings or othrr material. A 0 • In addition to the foregoing, the Contraotor shall furnish the Owner with four (4) bound eats of all operating inatrwtions, maintenance manuals, • and parts lusts for all meohanioal electriual equipment furnished under the Contrac, • • • f CITY OF MNTON, TEXAS SEWACE SYSTEM IMPHOUEMSMTS CONTRACT NO. 61•.4 SEWAM TREATWNT PLANT Bids to be received$ 10100 A.M., January, 3, 1962 AMENDUM NO. 2 A. SPECIFICATIONS 1. Item 104 - Conorete Structures M per 1 : 2. Expansion Joint Material be Hot-Poured Joint Sealers Joint sealstofulil be hot. poured asphalt rubber ao>rpouM app1,lad in # woomn 1110 mangier in acoordanos with aeanulact%reras recai"ndations. It shall be Para,Pla?stia ( If ar,&pproved equal, as ■MUfaotursd by Ssrvici 'Ctirporetian " 6051 W. 65th Street, Chicago 20, 11=4iM. Ot Coalstruation _Jcints s 36 one ruo on oint Between Wall, ar4 Foolping in gamines O This item is in referents to the Aeration basins, The clarifiers have waterstop as shown on tl' plans, Be - MRS 1. Sheet No. 3 Piping Layout At the point wh►M the 6" V.C. filtrate line from the sl is connected to the 610 CI Supernatant line from the di stor" dryings at of ge by neapu a 3 Kay plug valve, the flow line is iven as 562.44. This shall, be drying bdeds. to be flow line elevation d 59.0 to reflect the tevissd sludge drying 2, Sheet No. 5 Raw Sewage Pump Station The 18" Daly. Discharge dart for the exhaust tan shall be 26 Gauge Oalvanited Sh"t metal. 3. Shoat aa. 9 Return SludP,s Pump Station The 10" x 12" Exhaust duct from the pump room shall be 26 Gauge Oalvanind Sheet aetal 49 Sheet No. 19 Return Sludge Pump Station The 1 ton chlorine oylinder shown o n the Chlorine Container Cratd].e will not be turni3hed tar the contraotor, 5. Revised Sheet No. 32 Sludge Drying Bede a. The paving around the sludge beds is shown as 2" Not add asphalt. It shall be 11Hot rix asphalt as calioid for in the speoitioations and ae shown elaawhere on taro plans. be The flow line elevations of the 'o"' V.C, pipe shown on the plan view are In W roe. Tress elevations shall be lowered 20.011. 5 1• I is ~Y4 •g.~t • C. ADM NM No. 1 • Addendum No. 1, section V Appendix, (a) Inforwation and Speoial InotrWtiona to Bidders ouneieted oft the following1 Add _ the enclosed pages "o" t fld"► "411 any M11, However page "c" was not included. It is now inoladmd with this addendum, NOiE1 Biddera shall Acknowledge receipt of this Addendum in the;l~+bpo~el► ' e "Ust o NICMIS Aft INIM1 8g Conftlting Enghneerar t Dooember 2q, 1961 Enal1 1 - page 110,1 • r . fln k "5.,_ ,rs 1 7 p i' 7 ?'iV t '.<f~ ti . ..yi r~1 ~r I':. • civil or mllitarY authority, act of the Owner, fire, flood, strike, riot, sabotage, embargo, unusually severe weather, delay in transportation, • delay or inability to obtain specified or suitable equipment or materials or transportation facilities, or delays of subcontraotore.or those furnish- ing equipment or materials, then La any such event the time of completion shall be extended a period of tiro equal to the period of such delay and its oonsequencesi and the Contractor shall not be liable for any expense, loss, or damage that may result from such delay. Swept for causes as hereirbefore not forth, in the event the Contractor fails to complete delivery of the equipment within the time set fort?i in the Proposals, the Owner may withhold permanently from the payments he Co eachdue thet respective~ coaum of ntracts Fifty as liqui0} dated l damages for such delays.r 9, , i The City will pay eighty per cent (80%) of the contract of a of equipment upon delivery of the complete unit in benton,prios Texas, Final payment of the remaining twenty per cent approximately thin (20%) will be made within satie£c:otoryteat of the , eduikwnZ,r Inmtheteventfi.nin and stallationnand tests • are not made within six (63 months after completion of delivery, final payment will be made at the end of said six (6) months, The acceptance of delivery of the equipment covered by this contract, or the payment therefor)' shall in no way constitute a waiver by the City of its right to rr:turn or reject such equipment and/or to claim damages for (a) non•ooWJ'l.anoe with the terms of the contract, (b) breach of expressed or implied warranty, or (o) the enforcement of ony other legal rights which the City may have under the Contract, 10, ali ioa ions of Di' erl No equipment shall be offered from any manufaaccturer,no regu arly engaged in the production of equipment of the sirs and character horei.n specified, In general, the Etdder must have installed and had in satisfactory operation for a period, of not less than three years at least one unit of size comparable to th units specified. 11 at ria. a~ ~~Jo kman i i These epeoifioatiore are intended to Fk so on mater written that o A s and equipment of the best quality and grade will be furnished# The foot that the specifications may fail to be suf icienttly complete in some detail il.l not rolie tha Manufacturer and/or Supplier of full responsibility for providing materials of high quality and protecting „hem adequately until the minimum standard of quality which the Owner believes neosaary to procure a satisfactory project. No substitutions will be permitted until tho Manufacturer and/or Supplier has recoived written permission of the Engineer to make a substitution for the material which has been specified, • Where the term "or equal", nor approved equal", is used it is understood that if a matarial, product or piece of equipment bearing the name so used A 0 I CITY OF DENTON, TEXAS S1VAOE SYSTEM IIVROVEAENTS CON'T'RACT NO, 61.4 SEWAGE TREATMENT PLANT Bids to be reoeived, LOt00 A,M., Januae,,y .1, 1962 ADDENDUM NO. A, SPECIFICATIONS 1. Item No. 225 - Miiaoulloneous Items Add the following paragraph to this item: D. gteo~, Water SEoragL 1 The water vtorage tank looated on the roof of the Return Sludge Pump Station shall be 3 feet in diameter and 5 feet long and shall be installed at the looation shown on Sheets 9 and 13 of the Plans. The tank shall big: 3116" minimum plate steal, all welded construotion. All welding shall be in aooor&.noe with AWWA D100-,59»11steel tankap Standpipes, Reservoirs and Elevated 't'anks, for Water Storage.' The tank shall be hot dipped galvanized after fnbrioation (including fittings). Mount- ing otraps and anohors shall also be galvanized, B. Plans 1., A&B.L&Q. - ro i«teotural Deters - Delete the word "Removable)" in the transom bar detail for doors. All transoms in the projoot are to be fixed. 2. 6hoot NoQnoo~pyUg.Detgs. Add following note to lrenoe uotaile - ' All fenoo poste shall be good quality, straight., oeder posts, of approximate dimensions shown, and bhal.l be untreated." NOTE: Biddors shall acknowledgo reooipt of this Addonduii in the Oroposal. I i HITZZ NICHOLS AND ENDRESS Consulting Engineers Deoember 29, 1961 r L • • CITY Or DENTON, TEXAS 81!,iCI RAUE SYSTEM IMNROVEMIATO CONTRACT No, 61-4 SIMAGE TREATMENT PLANT (Bootion I, II, III & 'rv) r Novombor 196I rMEE'Sr, NICHOLS AND ENbRi:SS Conoulting Engirioors Dort Worth, Toxaa • • INDEX INVITATION FOR 13IDS a PROPOSAL b INFOR14ATION AND SPECIAL INSTRUCTIONS TO BIDDERS f SPECIAL PROVISIONS I PREVAILING WAGE RATES FOR MUNICIPAL CONSTRUCTION n CONTRACT AOR EMENT I PERFORMANCE BOND 3 PAYMENT BOND I 5 GENERAL CONDITIONS OF THE AGREEMENT 2ULUa CI 1 AT 0 ,fie 0 SECTION I . 011NERAL CONSTRUCTION SP!E01KCATIONS Item No, 100 - Genera" Requirements Item Noy 101 _ Earthwork Item No. 102 - Roads, Pavements and Sidewalks Item No, 10 - Conorete for Structures Item No. 104 - Conorete Structures Item No. 105 - Reinforoing Stool Item No, 106 _ Metal for 5truoturoe Item No. 107 _ Stool Structures Item No. 105 . Sanitation an(I final Cleanup SECTION II - M9011ANICAL SPECIFICATIONS Item No. 201 - General Requirements and Equipment Inbtallat'_on Item No. 202 - Darminutor Item No. 203 - Grit I;emovnl Equipment Item Nu, 204 - Primary and Final Clarifiers Item No. 205 . Sludge Digester and Waste Gas Cqui,pment Item No 206 - Air Diffusion Equipment Item No. 207 - Motoring Equipment Item No, 205 - Chlorination Equipment Item No, 209 - Piping and Pipework Item No. 210 _ ,Sl.u ,oe Oates and Plap Valves Item No. 211 Exhaust Fans and Gravity Hoof Ventilators Item No. 212 Air blowers Item No, 213 ...Primary Sludge ]jumping Equipment Item No. 214 Sludge Drying Bede Item No. 215 - Wet Well Levol Controller Item No. W - Air Compressors JIM' Item Noe 217 - Instrument i'anol Item No. 218 _ Hydro-Pnoumatic Preosuro System 0 Item No, 219 - Pumping Squipment Item No. 220 - Plug Valves Item No, 221 -(late Valves Item No, 222 _ Check Valves Item No, 223 Hoisting Equipment and 9unp pump Item No, 224, . Plumbing Item No, 225 . Misoellaneoua Items SECTION III - ARCHITECTURAL SPECIFICATIONS Item No, 301 Masonry Item No. 302 14aterproofing and Caulking Item No. 303 Root Doors Item No. 304 » Roofing and Shoot Metal Item No, 305 - Metal Doors! Frames and Windows Item No. 906 - Acoustical Tile and Cypsum Board Ceilings Item No. 307 - Miscellaneous Items Item Nv, 308 * Glass and Glazing Item No. 309 - Builders Hardware Item No. 310 - Pointing N Item No, 311 - Laboratory Furniture SECTION IV - ELECTRICAL SMCIFICATTONS Item 401 - General 10,('Qt1'ica1 Requirements • Item 1402 - Elootrioal WirJ.ng, Item 404 ..iSleotrical aorvioont A 1'1'gNJ)IX SECTION V - SPECIFICATIONS PlOo. MECHANICAL EQUIPMENT TO DE FURNISHED BY 0W iR (Contract No. 61.3 is presented herein for information) Page b - Information and ,peoial Instructions to bidders page g - Sisaoial, Provisions Page h Proposal Item No. 501 - BArminutor Item No. 502 - Air Blower Unite Item No. 503 - Pumping Lqui,pment Item No. 504 - Primary and Final Clarifier Item No. 505 Alp Diffusion Equipment Item No. 506 - Grit Chamlx)r Equipment Item No, 507 Chlorination Equipment Item No. 508 - Floating Cover Item No. 509 - Gael Burning Equipment and Aoooeeories Item No. 510 - Sludge Dennity Msaeuri,ne Equipment Item No, 511 - Metering; [equipment r 1WITATION FOR RIDS Sealed Proposals addressed to Homer U. Bly, City 1~lanager of Denton, Texas, will be received at the office of the City Manager in the Municipal I)uild!,.ng until _1219-0-A., hi.l Janua , plotion ofi jqGl for the oonatruotion and com. CGNTRACT NO. 61-4 Sf?i+lAM '.FATML T PLANT be opened read, aloud- a A nyebiddreplace ceivedhafterpclosingiti.mo will publicly unopened. Copiers of Plans, Specifications, and Contract Dooumonts are on file erv:l may be examined without charge in the offioen of tire Director of Utilities anal Tierces, Nichols and Endrese. Ono-half scale Plans and other Documents mNV be proLiured frori Fresno, Nichols and I,ndrosa upon a doposit of $25,00. Tho full deposit will be refunded to thoso Prime Contractors submitting a bona fide bid, Othor deposits will be partially the Contract Documents, Pull scale Plans will beravailablestocthosotdesiring them at the following, coat, which will not be refundedi BLUEPRINTS (Single or several shoots 15,.00 sot (Full net of Plans $1500 set • 13LUE LTNC (Single or several shoots PRINTS (Full, not of Plane $25.55 S ash .,~2~.00 vet A caahier's shook, oartiVi.ed chock or aoooptab;c J~Wdorls bond payable to thf. City of Denton, Texas, in an amount not loss, than five (5W} par coat of th,) bid aubmitt.o,dmust accompany each bid as a l;aaranteo that, if awarded the contract, the Rieder will, within ten (10) dayoof award of oontraot, enter into a oontraot and oxncuto bonds on tho forma provided in the Contract Doou• Morita. Attention is called to tho fact that not lens than the provailing walro rates act established by the City of Denton, Toxaa, and an hereinafter stet forth in the Contract Uoaurnonto horcinbefore dosaribod and which are me,de a part horeoT, must. l;e paid on this project. A performanoo bond arid a payment bond, each in amount of not lose than one hun2rod (IOC%) por cent of the oontraot price, conditioned upon the faithful porformanoa of the contract and upon 1,tkyment of all. pornono oupplyinr labor or furnin1 i,ng matorials, will be requi:rod. In case o!. ambiguity or lack of aloarnoss in stating tbo City of Ds ton, Toxar roservas tho right to adopt the mostpadvantagooun oonatruotion thereof, or to reject any or a3.1 bide, and waive formalities, No bid may be wi.thdrnwn within forty five (45) days after date on which bide ~ are opened, CITY OF Dr:NTON, 'P19XA5 a Horner D, Dly City Manager NOTES DO NOT DETACH PROPOSAL FR4;d BOUND DOCUMENTS, rjhton, Texas January 3 pRo pOSAL OF,,,,_, Elm Fork Conatruotion Company, :Cnaa a corporation organized and existing under the laws of the State of '}gv a partnership consisting of an individual trading as TO THE CITY OF MTON, TEXAS PROPOSAL F'ORt The ocrW ruotion of the Sewage,Tmatmt Plant as shown on the plans and covered in the specifications " other uontmot Dwumants. The undersigned bidder, pursuant to the foregoing "Invitation for Bids", has carefully examined the Infomation 4nd Special Instructions to Bidders, Special Provisions, this Proposal, the form of Contract and its general and supplemental of>ndi,tions, the Speoifioatione, the Plans, and also the site of the work, and will provide all necessary labor, superintendenoe, maohinery, equipment, tools, materials, servioeeo and other facilities to full; complete all the work as provided in the Contract Doouarits; anu binds himself lion acceptance of his Proposal to execute a oontraat, Performance Bowl Para went Bond according to the prescribed forms for performing `and completing the said work within 3412 oalendar days Item Estimated Description Lbit Extended J'R►..... W/DL.11W1L.:.. (Pried 19- Be W itJ40 in Worgm PrigA..~ . 60,Mt 1 Lill, For the construction and oompletilon of the ',swage Treatment Plant using "swing C01flueer equipment" at the !Ago Sacs of. ter I IPM i tv..Xj&e ousarv3 rive H dr(tJ 011 ~T)V"l~{y 5t .f t ~ .ib 4 a' ! Item Estimated Description Flo, - ta„An Unit • 21 10 COY, Utx*a Class A Concrete not shown on Plans' 'noluding exogvation, Alms0 etc., complete in place I ® 11 ..ft .1'ivo'ollars Per Cubic Yard # 55,00 X50.0 3 • 10 C o"f. Extra Clx+~a , g Coro the PUMS0 ,'inol not rho , q~ r fore, ate., e~ooaw'aioa ; complete in P at • 2 Cubic Yard $ j0- v. xo. .00 000 Lbs* P:xtra (teinfciroing Steel not shown an the Plansi, Complete in place Per Pound U-...=1.... $ tiU.c~U 2,0 Tons gr~tra 801] and S'l,igot Cast Iron Pipe not Shown on the Plans, complete it) Place 0 1"oUr IdUn ""'Jy ~1.4~.1tiC13~.. Ton 9()0,2jL~ i `lf}~ rye e I. ~h 11 i r, • Item Estimated Desoript:lon Bob Unit L,xtended Lhxan y (P>,i nA +n - Ik 1L. i LIW ZOi+),,,,,.., - price Am Ant 6• 2.0 Tons Extra Bell and Spigot Cast Iron Fittinge, not, shown on the Plane, oompl,ete in plane 6 Z''ivo Huadrod I0IUar.+ 7• 1.0 Ton Extra Flatbed Cast Yron Fi;.ti ey not shown on tha Plans, oovlrte in Phoe •_SiK f1L[2L)rf I irA rf'i ...~._.......,.~.,,,Asr Ton U <`000 $ 6 0.00 4> o TOTAL 4MOUNT OF BASE BTD (Items 1 thru 7) $.,_„r,,,, ~ OO TOTAL AHOURT OF l ' ~ ~9~~~ C0N7'kAC',P 1+.4iNttitr;ll y'(4 - * ~NOTEi Items 2 thru 7, i11oYiAtjjVtj, are intended to be "ADD" or 11DMUCT11 itepM ADD OR DEDUCT ITEM (Alternate bide) f0V variation from "DA(le Bide Nrbe Bark out tht) Add or Decluot which does trot apPV to each bid item. S. L.S. Por the use of "fixed diffuser equiFmront" in 1iev of "swing lender" , Acid, beduot 9• 1,• a• F'or the deletion of t}(o ori,t Chambelt 1{d~Fti I)eduu h, ;;txt oc'rt 'i`}iciu ,rid :Lv+ifunclrc;it Ylnrs 1ftr Deduct $I `'o r P~ta;l. /unnunt, i1' Is,a.SA 'i'.ii,l l,~m<r :1; tiff ~.r 'Jl n~inuii 2 ~5100t)'Je4ua!Jom l' or ff:Eno,; ,I and 10 r - d +n 4t y , 9 xu#~s 3r^~. 7 f h i. riFr {.t ..1+ v t A` n . . . i.,3. t1t`lrl-e !`b' & Yaj ~b:i r N r` 1 i.« r O! l~d u' • Xtem Estiftted Desoription Nss. Unit Extended 1u_antity P W P lU. L.B. For the installation of a Bouyant, Floating Cover manufaotured by prooeee Engineers, Ino* in lieu of cover indicated on the Plana. *M, Deduat Ei&hb Thousand Five Hundred. Dollars Deduct t3s~,,:,;Uo ll.. L.9. For the deletion of the instal- lation of the WoNste #as equip. _a>fit . Add, Dedu4t liars Add, Deduat 3 'low, t "Bed Within ten (10) days after aooeptanoe of this Proposal•1 he. will Wwute the forimal oontraot and deli undersi ver a t, faithful perforunco of the Contract. The attPP" bid rt-Yitbotdstf for a the Of S 9G.,ui' kinount Did is to beooain the rty the C traot and Bonds are propet axeouted and deliverreednwithinathentime above the Coat as liVidAted d+nnt~6s for the delay and additional work caused therebygt Earthy The undersigned aoknowledges receipt of the following Addondunr 1;0. addandai 1, Adduridum 140. P. ttrul ,Ar~attdtim..1;(n Respectfully submitted, Al1.;]m h'or3; Conutruatlnn ~Jotu}ui , Trio. 4iV 3.d h. r a +~Luidar . arrax, ,;tray.-'['roan, (Seal if Bidder is a Co ration By rpo ) •r• l~''~+,rro~w,p1~'ros;LdenL t e<!~ :~u ~to r~'i4 y 1~S 11 r a, a AP y{A 1 t P 1 , h vi~ sii'y '4if • INFORMATION ANb SPCClA1, INaTItUCTION3 T'0 [i„_ IDb S l 4J r bo Dot~gs The work to be none comprises the furnishing of all materials except items to be furnished by the Ownor), labor, tools, equi.p_ ment and appliances neeeseary for the construction and completion of the 1'>cwage Treatment Plant-Contraot No. 61-4 all as shown on the Plans and as provided by those Specifications. The project site is in the southeastern part of the City as shown on the vicinity drawing. 2. W.Q1 The bidders are requested to submit a "base bid" as shown o Proposal for the construction and placing into service the improvementnasha indicated on the Plans and as specified herein. This base bid shall, be for the use of "swing header" air diffunsion equipment. The bidder is also requested to submit Add or Doduot" quotations for certain alterations to the "base bid". The Owner will analyze the Proposal, together with the "Add or Deduct , and will make the award based upon their determination as to their best interest. "Add or Deduct" quotations (alternate bide) are requested for the following., (a) h_'or_tho ins niin+a This bid item shall be for the installation of ulixedmheader header,' in r aeration basins in lieu of "swing hoador". Attention is called to the faot that this Contraoter will be roquirod to furnish some additional material (material, not furnished by Owner) in order to make a complete installation. (b) 1. aj Wvn.,uf U., t! I DI requested to furnish a quotation for tdeletion of the pritsChambor. In gcrnral the major alteration from the "base plans" are as followss (1) Rerouting 1"oroo Main Sz) Deletion of Manhole "C" ) Deletion of 2-21+" Plug Valvos (4) Deletion of 2-20" Plug Valvos (5) Deletion of 1-G" Plug Valve (6) Deletion of 1 Water Line from Primary (7) Deletion of 1 Oats Valve and Fire (lose Connootion (8) Deletion of Grit Chamber Structure (9) Deletion of Installation of 11;quipment (10) Deletion of 1;leotrioal work 11 Reduction ir] Pi work 12 Reduction of Ctrrr and Outter and Paving 19 Add small seotion of ,sidewalk The rovinod layout showing the deletion of tho Grit Chamber is indicated on the sheet entitled "Alternate Did - Item. No. 9", . r l tatE~,`a :t 1... it~cc+.S S tc Covo B d I JU, Thin Owner in considering the purchase of a 113uo anb F Cover" louting for t , digionter in lieu of the oover shown on the Plana AM specified iSectionhV. This cover would be manufactured by ProceNin i;ng9.ueero, Ina. The cover is of all steel oonstruction and does not require wood docking and built up roofs f The cover would be created in accordance with the r,7anufaeturer'e rooommonrla. tions and these specifications. The painting would comply with the same acho. dule shown in the item "Painting" of these specifications, The gas piping shall be rovised to comply with Process shop drawings (piping is not required to go to center of tank). (d) i~cr deletion of n i„~~p ~ i t 13i No, l1~1 This bid item is for the deletion of the waste g~ a facilities t= side of the digester, The Contractor will be required to furnish and install piping in the digester thru the wall flange fitting with a blind flange at the terminal point. All other piping and installation of gas burning equip- ment will be deleted. 3. ~ L14~1#~Q-I&-1~ ~:~1.it h,2..i?.y QRMz The Owner will reoeive separate quotations for equipment listed below prior to opening of Proposal for this Contract. It is not antioipated that aotual award of equipment oontraots will be made prior to receipt of bid for this Contraot. Bidders for this Contract will be advised as to the apparent low quotation for each piece of equipment.atBtheeoff ceseof the Director descriptive Utilittiiesoand/or concerning the and Endreas. r Nichols The following items will be purchased by the Owner and furnished to this Contraotori 1. Soreening lo,'quipment (Darminuter) 2. Air blower Equipment • 3, Pumping Equipment 4 . Primary and Final Clarifier Equipment 5. Air Diffusion Equipment G. Orit Chambor x.quipmont 7. Chlorination Equipment, 81 Ploating Cover 9. Gas Burning Equipment and Aocoaeorioa 10, Sludge Density Noasuring Equipment 11. Moterint, Equipment Those items of equipmont arc being purchased under Contract No. 61,..3 which is referred to as Section V of those specifications. Section V . Sewage Treatment Plant E'quipmont is made a part of thin Contraot Document as an 'Appondi,;". The Didder shall fully inform himsolf as to the content of Soution V. Tho Contractor for Contract No, 61 4 will, bo required to furnish all equipment not specifically included in Contract No. 61.) (Section V), The Contractor for Contract No. 61_4 will be reluirod to reoeive, unload, transport to projeot sito, eto,l all equipment furnished by the Owner. Any shortage of 9quipn,ent shall be reported to the City at once. fy tf. Mn,~Qi.t~, furnished by Con r: This Contractor shall furniah all material and equipment except those iioms covered under Contract No. 61-3 M (Section V). 5• ~fiat2r'~.i?~t3p4S1_ib.til»2f I nn 1 r c 0 e t The Contractor shall be fully ro,iponsibla for materials furnished to him. Any material that shall be lost, stolen, damaged or brokon after having been received by the Contraotor, shall be roploned or ropairod aa'+ required for aoooptable ,job, at the expense of the Contractor. If' replaoemetrt materialo are furnished by the Owner, tho Contractor will. be charged for those at the actual cost to the Owner. 6. L4uQ of.' C2L)jj off' The Owner dosi.roo the work to be completed at the earliest possible date. The project should be oompletod within 360 calendar days. In the event the Contractor fails to complete tho project within the time set forth in the Proposal, the Owner may withhold permanently from the payments to the Contractor the sum of Fifty ($50.00) Hollers per d as liquidated damaga en s, as set forth in Section 4.041 page 17 of the General Conditions of the Agrooment, 7. d ;r ,1 Bids shall be made on the blank form attached and the complete • documents and plans returned with the bid. Bids not co made will be con- aidered out of form. V, ii S ou y Each proposal must be accompanied by a oorti.fied shook or acceptable b?.d bond in an amount equal to at least five (5j)) per oent of the amount bid as a guarantee that, if awarded a contract, the bidder will execute such contract within ton (10) dayo in the form hereto attached and make bonds of ono hundred (1004,v) per oont of the oontraot price. 9. f?o £g mtp tnoe I3orxt; With the oxeoution and delivery of the contraut, the Contractor shallurnish performance born] for the full amaultl; of tho contract. Bond shall be e xuouted by an approved su;^oLY company aut tnrind to do business in th;a State of Texas, and anceptablo aecordiria, La the latest l at of oompanico holding Cortificato3 of Aul;harii. from thri .,art. _ • r~t,c of Y r . tau Treasury of the United Statos of Amorion. porfnrmanuo Bond shall. be arranged to oxtond for a period of one (:1.) year 1;o,yonel 1;iir! date of w r tton acceptanoo of the work by the owner, to guarnnteo thu rol%tr and/or roplnun- i,ient of defective matorialo and/or workmannbip which rroy rlevrInp during this period, 10. ._'~YliQDLAD nL, In addition to tho porformarioo bond, Cho Contractor shall furnish a payment bond for tho full amount of the Contract. Pay~nont bond shall be exeou'„rd by an approved surety company authorized to du businras in the State of Toxarr, and ooooptablo according, to the latest lint of oom- pnni.os holding; CorLi.ficates of Authority from thu Soorotary of tho Treasury of the United ,`Raton of Amnrioa. 0 h • 11. Y r et. LiM of S12ecificeLtions; Any question as to the meaning, of any specifications will be answered by Addendum which will be sent to all wi:o have been furnished with the plans and specifications. 12. f3iddetry!s Know:j. of 99n1o,1s; Prior to the submission of a Proposal the Didder shall have made a thorough examination of the site of the work and of the pl.ana and specifications, and shall become informed as to the nature of the proposed construction, the kind of facilities required to carry out the construction, labor conditions, and all other matters that may affect the cost and time of completion of the work upon which he bids. The Owner has had several test holes drilled on the site of the project, The logs as determined by the testing are shown on the Plans. This test hole data is furnished for information only and the Owner does not guarantee its accuracy. Copies of the Report on Soils Investigation may be examined at the office of the Director of Utilities and/or the Engineers, 134 1_mairty_Pre. _p The Contractor will be expooted and required to protect all property, trees, fences, livestoc!r, etc. adjacent to the project site. 1$. Wage [tatess The Labor Classifications end Minimum Wage Rates set forth herein have boon predetermined by the City of Donton, Texas, in accordance • with statutory requirements, as being the prevailing olassifinations and rated, and shall, govern on all work performed by the Contractor or any sub.contractor. 15. w-t r~ for Co st rotionr The Owner will furnish all water required during conetructionj however, attention is called to the fact that the pro,joot site is not served by a water distribution system. Dater is available at points on the distribution system. 'rho Contractor shall, at his oxpense, lay suoh lines and make such connections as he may nood, subject to the approval of the Director of Utilities. 16. Pate c3, DesL;n_: a 0-e~ 9. tlat ials_r l'r aczen r L!: if the, contractor is required or desire:: to use any devinet mn,terial or prooeao covered by patent, trademark or copyright, he shall, make suitable legal agroemonts fir provisions for such uno, and thu contract, price shall, without exemption include all royalties or costs required by reason of such use. The Gont,ractor and his Arotion shall indemnify and save the Owner harmless from any and all claims for infringement by reason of the use of any device, material or process in connection with the work agreed to be performed under these Contract Documents which is covered by any patent, trademark or copyright, and shall indemnify the Owner for any oost, expense or damage which it may be legally obligated to pay by reason of such infringement at any time during or after the completion of the work; providod, however, that the Owner will assume tho responsibility to defend any and all suits brought for the infringemont of any patent by reason of the design or type • of construction specified in tho Contract Documents, and to hold the Con- tractor harmless on account of such suits. ~ i 0 170 P men : Payment will be made at the lump sum bid for the work, complete and in working condition as shown on the plans ant as herein specified. The 0 cost of all structures, piping, conorete, furnishing and installing equip:. ment, and all other work shall be included in the lump sum bid. Changes in the contract plans calling for additions or deductions in the amount of rein- forced concrete, piping, etc,, nhall be at. the unit price bid for additions or deductions listed in the proposal, providing such charges be authorized by the Engineer. 18. Refund of Denogi4; It is intended that all persons fide bid for th Oe oral Contract" be furnished onesetsof one-half bona scale flans together with Bidding Document without chnrge, The full amount of the `25.00 deposit will therefore be refunded to those Prime Contractors submitting a bonafide bid. A partial refund in the amount of $15,00 will be made to all other persons who return the Documents in good condition within seven M days after the bid opening. No refund will be made after the olapse of this period of time. Additional sets of one half scale drawing may be procured for a charge of '10.009 which will not be refunded. Full scale plans will be available to those desiring them at the following cost, which will not be refunded: Blueprints (Single or several sheets e $ 0 (full set of plans .35 Each $15.00 Set Blue Line (Single or several sheets Prints (Full set of plans 0.55 Lath ~ $25,00 set' iratt, andBnot less thanhin thirty1(30) days after the execution of the con. mate, the Contractor shall submit(to)the Engineerta costfbreakdownhoff thei wurk under his contract. This breakdown is for use by the Engineer in pre- paring the monthly estimates and for tho Owner's use in cost accounting for the project. The breakdown shall be in detail, itemizing all items of equip- monf; and construction and shall accurately reflect the cost of all work as included in the bid prioes. Cost breakdown shall be such t' at an overall cost of tho various elements of the projer_t can be dotorminud. 20. prw,ln s and Ott er Data Re uir dd f,,t e Cc raptor: The n shall submit to the ingineor four 47acpint, Q,ct all shop0androreetion driawings and schedulos, schematic or system diagrams, njtline and founda.. tion or attachment, drawingsp data shoots, catalog cuts, bulletins, or othev desori.ptive material as is customary or as may be specifically required by the Engineer for each of the following itemst a. Concrete forms and falsework b, Concrete reinforcing steel a. Structural stool, handrails, gratin s and other metal specialties d. Piping and supports, including all 9 inch diameter and larger cast iron steel, reinforced conorete, and steal cylinder concrete pipe, etc. j e. Valves and gates, 6 inches and larger f. Architectural specialties, windoes, doors, plumbing, hardware, • etc, g. Electrical Equipment h. Hoisting 2quipment i. Other item as requested by the Engineers The drawings or other required descriptive material w11.1 be examined and approved, oorrected, or rejected by the Engineer with reasonable promptness, All rejected or corrected material shall be revised and re- submitted until approval is obtained. Delays eausod by such rejections will not be considered cause for extension of the contract time. Approval by Engineer indicates general compliance or acceptability; however, it does not relieve the Contractor of final responsibility for proper dimen- sions, character, quantity, quality, strength or sufficiency of the items involved. Waivers or exceptions to the plans and specifications may be validated only by writing from the engineer which specifically identifies the feature and no such waiver or exception shall be allowed as a result of omissions or oversights in examining and approving the above drawings or other material. In addition to the foregoing, the Cor;trnotor shall furnish the Owner with four (4) bound sets of all operating instructions, main- tenance manuals, and parts lists for all mechanical olectri.oal equipment furnished under the Contract. • 21, Tes for Leak a irk,; Filling shall be clone slowly at a rate not to exceed two 2' feet of depth per hour. When the basins have been filled to tho overflow level they shall be allowed to set for three (3) days. The • fall in the water surface shall be measured accurately at least twice each day to determine how much water is being lost to leakngo and absorption. During that time the perimeter of the basins shall be observed for any possi- ble leaks. All observed leaks shall be repaired >^ogardless of whether the amount of leakage falls within the allowable limits, The maximum allowable leakage with the basino full will tie 0.3 gallons per square foot of concrete contact area per 24 hours. In the event the basins lose more than the maximum allowable, the Contractor shall drain the reservoir. In (training the reservoir the last four fooL shall be drained out slowly, not to exceed one (11) foot per hour. 22. Pr241gt IM, Tho Contractor shall provide and maintain one suitable' project identification sign at location designated by the Engineer. Sign shall be of suitable quality in color and text as provided by the Engineer. CND Or INFORMATION AND SPECIAL INSTRUCTIONS TO DIDDERS • k i■■rr A SPECIAL PROVISIONS 1. General: This project will be financed in part by a Federal. Grant for Sewage 'treatment Works, Public Law 660. 2. TimeAllowed for Completion: As set forth intho "Information and Special instructions to Bidders", the time allotted for the completion of all items of work shall be 360 consecutive calendar days, which time shall begin on the tenth day after the issuance of the Work Order. The Work Order shall consist of a written request by the Engineer to the Contractor to proceed with the construction of the project. 3. Low t nd Re- t Co in d_Bid Wit bo ACnan+pQ: Subject to the other requirements and stipulations in the specifications and other Contract Dooumente, the Owner reserves the right to award the contract to the qualified responsible bidder submitting the lowest and best combined bid covering all sections of the project which the Owner decides to award at this time. The Owner also eeserves the right to accept or r^jeet any or all bids on any or all sections if it is deemed to be in the best inter- est of the public. further, the Owner reserves the right to reject any bids beeauso of irregularity or to waive such irroCule.rity if such action is in the publ-'.o interest. 4. Anti-Kickback Provi,ionst The Contractor will, comply with the regula- tions of the Secretary of Labor made pursuant to the Anti.Kickback Act of June 13, 19349 40 U,S9C, 276 (e), and any amendments or modifications thereto, and will cause appropriate provisions to be inserted in subcon- tracts to insure compliance therewith by all subcontrectors subjoot there- to, and will be responsible for the submission of affidavits required of subcontractors thoreunder, except as the Secretary of ihzbor maygspecifi- Bally provide for reac,onable limitatiotis, variations, tolerances and exemptions from the requiremonts thereof. This act provides, among other things, that: each contractor of sub.. contractor engaged in the construction, prosecution, completion, or repair of any public building or public work, or huilding or work financed in whole or in part by loans or grunts from a Federal agency, shall ftu•ril,01 each week a sworn affidavit with respect to the wages paid each of i.ts omployoo s engaged on work covered by those rogulations during the pre- ceding weekly payroll period. The affidavit shall be executed and sworn to by tho Contractor or suboontractor who e3uporvisos the payment of wages, and shall be in the following form: • • STATE. OF' ._.__,,,`COUNTY OF (IJamo of party signing affidavit) say: That ------,.._._.._~,__,(tllo), being pay or duly sworn do depose and say: t T ----auperviso the payment of the persons employed oontraotor or subcontractor on the th to during th~" a-"p`ay 11 period oo'~mmenoing on the building or work ; lq 1616 Ql'z - 1961 arid ending the day of a persons employed on said project have been paiddtheoful.] weekly wages earned, that no rebates have been or will be made either directly or indireotly to or on behalf of said " _'"_"_`-----------------ont a C re or r~ubo 8nt ficr the full weekly wrages earned b an p from 1 ticns, as defined in the regulationsunder ~thehekiok-baok"mActi(48 Stat. 948) and described belowt (Paragraph describing deductions, if any) • Signature and Title Sworn to before me this • 5. Ri h of Aee B Ao9,,g Roprosentativoe of tho Texas Sts ;o Department of Public lfea?':h and the United States Public Health Sotv'.oe shall have access to he work wheruvor and whenever it is in preparatiun or progress and the ;ontraotor will provide proper facilities for Buell access, 64 4on,.,..Dn ifiioatienst Whore materials or oquipmont are specified by a trade or brand name, it is not the intention of the 0 wnor to discrim- inate against an equal produot of another manufacturer, but rather to set a definite standard of quality or performance, and to establish an equal basis for the evaluation of bide. Miero the words "oyuivalcnt" "Proper or "equal to" are used, the , referred to shall be proper,l tlre l equivalent srf,doro0qual toasomeethin the opinion or judgment of the Engineer. Unless otherwise specified,aalln materials shall be the best of their respective kinds and shall be in a].1 cases fully a ual to approved samples. Notwithstanding that the words "are equal to' or other suoh expressions may be used in the spooifications in connection with a material, manufactured articles or processes, the material, article, or prooess, speoifioally designated shall be used, unless a substitute shall be approved in writing by the engineer, and the engineer shall have the right to require the use of such specifically designatod material, article or process, • END OF SPECIAL PROVISIONS • m • PRI~r~TjVa 4lAGE RATCS roll IUU,~CTPA)~0 , ~ CT ' The rates below have been determined by the City of Denton, Texas, in accordance • with the statutory requirements and prevailing; local wag;ee, Overtime shall be paid for at the rate of one and one-half (11) times the regular rnt,es for every hour worked in excess of forty (40) hours per week. UL,ITrICM ON RATE PER HR CLAS,TFICA'F RATE PF.2 Il,,:c Air Compressor ON $ 1.50 laborer (Common) Air Tool Operator ,80 $ •90 Batterboard Setter Maintainer Oper, 1.75 Bell Hole man 185 Mason Tender 480 Blade (trade 1100 Master Mechanic 1.875 Operator Mechanic 1,50 (Self-Propelled) 1,75 Mechanic's Helpk,' 1000 Blade Grade op. (Towed) 1.50 Mixer Blaster (Powderman) Cper. (14 ('7 & Over) 1.75 Bricklayer 1100 Mixer Oper, (lees than 14 CF) 1,50 Brie la 2,o6 Mortar Mixer Operator 1,75 1.00 Bulldozer Operator 1.75 Oiler 1.00 Carpenter 1,625 Painter, Brush • 1675 Clamshell Operator 1.75 Painter g Stage Spray 200 Concrete Finisher Crane 1.75 Pipe Layer 1100 Operator 1.75 Pourer Equip, 6)p- Heavy 1,75 • Derrick Operator Power Equip, op, 1,ight 1450 De lino 1.75 Power Saw Cporato,- 1.625 l; operator 1.75 Pump Operator, 04-;r 2" 1,50 Elevating Grader Op,(Tovo(l) 1..50 Pump Q)ol'atar, 21 & Less 1100 ]Fine Grador .85 Roller Cporator 1.50 Fireman 102 Scraper Op. Form Builder (over 7 CY) 105 1.50 nUcraper q). (7 CY A, Undor) 1650 hovel Oglorator 1.75 Greaser 1,~5 Trenching flachine Co. 1,75 Hoist Cper. (Chao Drum) 1.50 Truck Jarivor (11 TO or less) ,90 Hoist Oper, (2 Drum & Over) 1,75 Truck ])river W T. & Over) 1,1.0 Iron Worker (Rodman) 1,50 lie Idor 1.75 Iron Worker (Struc, Steel) 1075 Joint Worker 1000 Kettleman 485 Contractor shall comply with all State and Federal laws applicable to such work, The above are minimum rates, Didders shall base their bids on rates they expect to pay, if in excess of those listed, The Owner will not, consider claims for extva payment to Contractor on account of payment of wages higher than those specified, n CONTRACT A(,MUFMHAIT ;T'ATS' OF TEXAS ~ 1 COUNTY O THIS AOREEMENT, mado and entored into this ~~I_day of cN _ A. I?. , 1,9_(b> , by and between Clio Cit:v 01 he neon, 'n a[' the County of Uellton and State of Toyas, acting through _!.t,. iayor thoreunto duly authorized so to do, Party of the First fart, heroinaftor termed the OWNER, and Nliq i'orE; Con.~truoi:ion CoiaE~any, [nc. of the City of D,,t'l l.fl'; , County of' Ilnf_ir~F~ and State of ~l'C4.tle' , Party of the Socond Part, horoinaftor termed CONTRACTOR. WITNLSSETH: That for and in consideration of tho payments and agrcemontr; hereiiiaftor mentioned, to be made and performed by the Party of the First Part (OWNET and under the conditions exprrssod in the bonds bearing even date herewith, the said Party of the Socond Part (CONTRAC'T'OR) hereby agrees with the said Party of the First Parl, (OWNER) to eommonce and complete the construction of certain improvemrnto doncr:ibod as fol.low,i _r?E][Ptl'il-: I,.LDl1 ui~i raj 'r~•.n, 1,dU'It~, f'~ilrl f,, "r__it~`, kfkC, 1. [;7: e~ and all extra work in connection therewith, under tho Leans as stated in the General Conditions of the Agreement; and at his (or their) own proper coca and cxponso to furnish all the materials, supplies, machinery, oquipmont, tools, suporintondenco, labor, insuraneo, and other accessorion and sorvicos nocossary to complete tho said construction, in accordance with the condi- tions and prices st7tod in the proposal attacl.od hovoto, and in accordance with all the General Conditions of the Agreement, and in accordance with the plans, which includes all maps, plats, blueprints, and other drawings and printed or written explanatory matter thereof, and the Specifications there- for, as prepared by FREESE, NICHOLS AND ENDRES"S, herein entitled the ENGINEER, each of which has been identified by the CONTRACTOR and the ENGINEER, to- gether with the CONTRAC'TOR'S written Proposal, the General. Conditions of the Agreement, and the Perf.o,mance and Payment Bonds hereto attached; all of which are made a part hereof and collectively evidence and constitute the entire contract. The CONTRACTOR hereby agrees to commence work within ten (10) days after the date written notice to do so shall have been given to him, and to substantially complete said work within "6 r days after the date established in the written notice to commence wort, subject to such exten- sions of time as are provided by the General and Special Conditions. The OWNER agrees to pay the CONTRACTOR in current funds the price or prices shown in the proposal, which forms a part of this contract, such payments to be subject to the General and Special Conditions of the contract. IN WITNESS WHEREON', the parties to these presents have executed this Agreement in the year and day first above written. ATTESTi . hr ?;7. o i Party .of the -First Pant, OWNER 1 i / j By d •ij~)fil.tttr!Ll, (%Uy `;ourot'y II 1311'. 1t. 3t<<t`I"f?vll l Y'U 1,. (SEAL) ATTEST: f~. 'ill y,t )'(")C-(J"" .1!31 +)1aa11 I,t'U'?~. '>33 ~i)Uht]Il`' Part - y ~oS~e(cond Part,CONTRACTOR fly/y l/►YtTFV IL- 1, 7,W-1J 1 ir3r,13) _ Title (SEAL) 7»15-60 2 PER1001tMANCI; HONb STATE' OF TNXAS COON1,11Y Ol" 1jE l')VN K14OW ALL M11N BY '1'111;,1; PRhSIFAT9t That 11Lrn r.orl< Construe r Com;»n'j, Ina. of the U t l,,y of' tJ rl.l County of 17alatt`' , and Stato of TFIX11e as PRINCIPAL, and Amerio.ur i~:rur)l.o~yoy-ct' 7:nourt,neo Coapany SURETY, authorized under the laws o1' the State of Texas I'o act as surety on bonds for principals, are held and firmly bound unto the City oS ])e-ijton, 'L_ finis - ,a;s OW1.11120 in tho penal sum Of 1'~OUI' tIltlg~r~( 1`~~ i~• .0 n ~lhOllAFlrlrl '1'}lrrre -yZr~r1 I)ollaI's t1't1I.,'i1ruL_t:;i.t::1.y . IU . [i 0 ) for the paymont whereof, the said Principal. and Suroty bind themsolvon and their heirs, administrators, executors, successors and assigns, jointly and severally, by those prosontot i WHEREAS, the Principal has ontorod into a certain arritton contract with the OWNER, datod the FIr'JON day of 1 GgCH 1 19 62 jifor tho conastruction of ~r;wago !'rr rtment 1'lornt, Contrr~.ct iM. 61...,1 which contraot io hcroby referred to and Irl"'O o a part 11011oof as fully and to the aame extont as if eopi.ed tit l.ongth horoln, NOW, THERNFORP1, THE CONDITION OF THIS OIILIOATIOA` IS ,SUCH, that if the eaid Principal, :shall faith;.`ul.l.y perform said Contract ar.d shall in all rospeetn duly anri faithfully obrorvo and porforet all and ItinLrul.~r tho covenants, conditions and agrements in and by eaid oontraot agreed and covonanted by the Principal to be observed and performod, and according to the true intent and moaning of said Contract and the P:..,%ns and Spocifi- cations hereto annoxod, then this obligation shall, bo vold; othorwiso to amain in full roroo and offort, I PROVIDDI), HOWINER, that this bond is omm(-,od pursuant to the provisions of Artielo x160 of the Roviood Civil. Jta1,11tor3 of Texas as rurtended r 7-1;-60 3 by acts of the 56th 1.ogisl_aturo, 1te(Pl E.el' Sourslon, 1.959, and al.l liahi l il,i w_ on this bond rJhnL1 be dei.ormined in accordance wi.Lh the provisions of' !,,'I k) Article to tho ;amo extent as if it were copiod at lonl;Lh horrin, PRUV MI~;IJ FURTHER, that if any legal 4vA i.on be, ri led upon tile; honrl, venue shall. li.o in _ UrrlL.on _,wCounLy, Stal;o oi' Toxa!;. Surety, for valuo received, stipulates and itevorn that no chrenf;o, extension of time, altoration or addition to the terms of the cantr..u;i,I or to the work performed thereunder, or the plans, upeeil'ieations, or drnwi.nlf;; accompanying the samo, ,hall in anywiuo affect itl; obliftaLi.on on this bond, and it does hereby waive notice of any such chango, oxi.ension of time, alteration or addition to the terms or tho contract, or to the work to bo performed thereunder, IN WITNESS W111ME010, the said Principal and Surety have :signed .end sealed this instrument this j~7 day of p2-0i 19 62 Ylm 1,ork ConsLruoti.oll Company, Ino, Al)K!Yi.oan 1'mpa.ayors~ lnsur_~r-,,e Comp ly P incipal Surety • UY Of. xk:ar)r,3'lltirmnrrl Y'itle l .Ci. l''Irrow, presidenL Title ATIOu[iLr-1N u'AM T 11i° ~ ~ !Il.lx~, Address i,o3 13186 Addroso 20 Uoxas (SEA1,) (SEAL) The name and address of the Resident Agent of Suroty is: AJA~iI(tit':`I.^.:l•T'}'ii''S'='1'f!R~l:I1; 1•l I0 1?In,;i,l'PY' 1',`.EE7;' H1,11(1, DALLAS I, '1 MAS Note: Late of Bond must not be prior to date of Contract. • • 7•-15-60 11 PAYMENT BOND STA`1IE Of TEXAS COUNTY OF KNOW ALL MEN BY THESE PRESENTS t '1'►iat )sl,; 1'~,rk Cone l rust .i on C„,;_,r,r , of the City of 11~t1.l.tr; County of 1)n11;,.,, and State of as PRINCIPAL, and a.;oan l.nrurHnr,c Cor~~anv an SURETY, authorized under the laws of the State of Texas to act as surety on bonds for princl.pale, are held and firmly bound unto the C ~u.C Jeri f on, T!E Za f; as OWN[;R, in the penal sum of rMr dulvily'd 1"ourVon '[housunJ `i'hrcc ;±unci) ed iJ.Cty ~.FL ,l~ .)(7 ) for the payment whereof, the eaid Principal and Surety bind themselves and their heirs, adminietracors, exec- uturs, successors and assigns, Jointly and severally, by those prosentat WHEREAS, the Principal has entered into a certain written contract with the Owner, dated the ' r day of __13A,zeFl , 19 for the construction of ~c:aral'c, i'roat,tt:nt 1'lanL. Uuntrant Ho 61-4 which contract in hereby re£rf led to and made a part horeof as fully and to the same extent an if oopied at longth herein. NOW, THEREFORE, THE CONDITION OF THIS OBLIGATION If) SUCH, that If the said Principal shall pay all_ claimants supplying Labor and m:il;nr:i.al: to him or a subcontractor in the prusneuLion of tho work providod for in said contract, thon this obl:gnti.ori ahal.l be void; others:Iso to revird.n in ful.l force and effect; PROVIDED, HOWEVER, that thin bond In executed pursuant to the pro- visions of Article 5160 of the Revireod Civil Stntutos of Toxao as art-ndod by acts of the 56th Legislature, Regular Seanion, l9'i9, and All. l abiiitios on this bond shall be dotaimi.ned in accordance with the provisions of nail Article to the same extent as if it were copied at .longth horein. PROVIDED FURTHER, that if any legal action be filed upon thin bond, Venue shall He in DoIll'on County, State of Texas. A 7-15-60 5 Surety, for value received, stipulates and at;roes that no change, extension of tilno, alteration or addition to the Lermo of the contract, or to the work performed thereunder, or the plans, npoci.ficati.ons or draw hgo accompanying the srrrno, shall in anywise affect .it:; obligation on this bond, • and iL does hereby waivo notice of any ,;ucli change, oxtonsion of tilrie, alteration or addition to the terms of the contracL, or to the work to bo performed thereunder. IN WITNESS WI FUEOF, the said Principal and `surety have si; ned and sealed this instrument this /jryday of 1.9 61 iJlnr r241~ traction Con1E>Etlly, •[nc. Amc;ricari I,miTl oyor's# ( MLU'~ 110Q l'ubu,nny pp ncipal Surety By I3y .a M. 1CY.Nf7Y,T11 MA"OTTV Title L•U, •ar~rotr, Pr 2e;idcnL Title TIORN ~;Y-IN.LVM _ Addres3l'•~~~ Hex J.'3186 1 06, ini;Lil Y UNjf N f3 DG, _ Address irna.r.n,s i rr:xn,s ) `I (SISAL) (SEAL) The name and address of tho Resident Agent of Surety is: NotoI ]late of Bond must not be prior to date of Contract. r • 7-z.5-Go 6 GENERAL CONDITIONS OF AOREF2AE1T • DEFINITTONS OT' '1' MS • 1.01 OWN;I;R, COMTRACTOR AND ENGINEER. The OWNER., the ';CiNPRWIM and the N'Ilf+fPEER are, thooo mentioned a;; such i.n the Agrecmc;irl.. They are treated throughout the Contract Document;, as if each worn of tho singular number and masculine gondor. The 1;11C1NEE4R shall be underntood to be the ENGINI!IR of the OWNER or his duly authorized reprosentativo. 1.02 CONTRACT DOCUMENTS. The Contract Documents shall consist of the Notice to Contractor A(Aivorti.scment), Special Conditions (Instructions to Bidders) Proposal, signed Agreement, Performance and Payment Bonds (When requirodj, Special Bonds (when required), General Conditions of the Agroo- mont, Technical Specifications, Plans, and all modifications theroof .incor- porated in any of the documents before the oxocution of' the r.Lgreomont. The Contract Documents are complomer.tary, and what Is called for by any one shall be as binding as I called for by all. 1 03. un to Cv nC''OR. The term ,Sub-Contractor, as ampl.oyed herein', includes only those ha v direct contract with ;he CONTRACTOR and it includes one who furnishes material worked to a special lesign according to the plans or specifications of this work, but. doou riot Include one who morely'Nrnishes material not so worked. 1.04 WRITTEN t4MUE. Written notice of all bo doomed to have boom duly served if delivered :ln p~ roon to the individual or to a mombor of the firm or to an officer of the f:orporation for whom ii, is intondod„ or if' dol.:l.vored at or sent by rngistered mail to the lust business addross known to hi,n who gives the notico, 1 0_s_ OE?K (Mlo w otherwi,se stipulated, the CONTRACTOR t,hall provido uric] pay for rr J 1. mater 1 a, t,, supplies, machinery, equipment, I ool;r, suporS nton- deem, labor, in,urance, and all water, light, power, fuel, transportation, and other f<icil.i.tzes neco;;sary for the execution and oompioLlon of tho vlork covorod by the contract itouumonto. Unleon otherwi;,e rij)(jolflod, .JA materi- als shall he rruv .crud both workmanship and mrtiteri,1 , 131w11. bo of rt good qua1 i ty. The COI(TTAUPOR c;tr, ra.1 , 11A, roqui.red, furni r.h sir „i a factory nvidorme as to the ki.nd_ arnrt quaa_ity of rrr;rteri.als. Material:; or work doocrib,:d in words which so r. cl(t latV0 a wo.l1 knovin technical or trado mcanxnf; .:;call be held to refer l o s ?ch recognized stanilarxds. J..UG rm "Extra Work", as used in thi.rr contract shall be uncles otoai 1,1 54 no:ludo all work that may be rogUirod by the E;110110 a or UvINP,R to I); rk i w i , Lhc CONTRACTOR to accompli ah any chgngo, alteration or addi t.lorr I,o t •n w r4 slrowrr upon the plana, or reasonably implied by c, is specifications, trrcl riot Qovorod by the CONTRACTOR'S Proporialt oxcept as pvo- vided under "Changor, and Altorations"o herein, _ • • 7-l.' .6o 7 1.0? WORK11,10 DAY, A "Working Day" is defined as any day not .i.nnl.uding SaL I, ~ day:,, Sunday.; or any l.of{al holi(lays, in which wonthor or othor conditions, riot undor the control. of the CONTRACTOR, will pormit construction of the principal unfit,; of the work Tor a continuous por,iod of riot lass than sovon hourti between ?s00 a.m. and 6:00 p.m. . , 1.08 CALENDAR DAY, A " Cal,ondar 1)1,kv " is Any day of the weok ov month, no days being oxceptod. 1.01 SUBSTANTIALLY COMPh VPT). 13 tiro term By Subotuntially Cornplatodn is meant that the structure has boon mado suitable for use or ocoupanoy or the facility is in condition to norvo its intonded purporso, but still rat roqui.ro minor miscoll.anoouts work and adjustment. 2. CONTROL OF WORK 2,01 LINES At,'[) OI1AI)M, Unless othomiso opooifiod, all linoo and'Nrados shall be furnished by tho OVINER or his ropregentativo. Whonovor neoeseary, construction work shall be gusporndod to permit pofformance of this work, but Such suaponaion will. be as brief as practioablo And the CONTRAC'T'OR shall be allowed no oxtra compensation therefor. 'The CONTRACTOR shall give the OWNER or the NNOTNXEM ample not'coo of the time and placo whore linotr and grades' will be needed. All stakes, harks, oto., shtr.l.l bo carefully T)rosorved by the CONTRACTOR, and in ea.so of oareloao dostruction or'romoval by hiri or his employoos, such stakon, marks, otc., shall. be replaced at the CONTRACT'OR'S ~ exponr,o . .U2 t;NU,.tJI,T;It'S AUVIORVrY AND DM. U l r; osg othe . _ rwi, a apecif'ied, it is mutually agreed between the partio mu to this Agreement that the FIJOT1TCliR shall t;upervioo all work included heroin. No has the authority to stop the work whenever such stoppage may be nocostjary to incuro the proper oxerution of the contract. Tn order to provbnt delays and'disputos and to dinoourAgo litigation; it" is further agrood" that the P2101 .1NUl-1R shall in all. cases doter.. hrino the amounts and gUantitios of the vovoral kinds of work which c.ro to ho paid for under this contract. Ito shall dotormino all quot,ti.onn in relation to aaid work and the construction, thovoof, And rihall in all cAse;; decihe overy question whioh may arise rotative to the execution of thlo contract on the part of eaid CONTRACTOR.' 't'he XNGJ(f1 P;R' 3 ogtimaten and findinge shall bo the conditions precedent to the right of the parti.on hereto to arbitration or to any action on tho contract, end to any rights of the CONTIMTOR to receive any money under this oontraotl provided, howovor, that should' the 1QltuT1`1901 render any dooltilon or vivo any direction which, in the opinion of either party horotc, is not in acoordance with the moaning and intent of this contract, either party may file with 3aio, P1310 NHM within thirty (30) daya his written Objection to tht doclaion or direction no rendered, and by such action may reserve the riT;l70 to submit the question so raised to arbi'- tration an heroin provided. It in the intent of thin agroomont that tho,ao shall be no delay in the execution of the worki'thoreforo, the writttr. docieion or directions of the i~NCfCN1i;IJR an rondorod shall be promptly carried out, raid any claim arising thorefrom shall. be thoronftor adjutstod by a`1>:i_.. tration as hereinafter provided. • The ENGINEER slral.l, within a roaaonablo time, rcndor and dclivcr to both the OWNLR and the CONTRACTOR a written decision on ul.l. c1r_lins of the pri-Lien hereto and on all questions which may arise rolativo E.o t;ho axrcution of the work or the Intorprotati.on of the contract, t3pecificaLlonrc and plans. 'Should • the PN0.1 NIs1;R .fail. to moko sueh dec.isi.on wit.ldn a reasonablu Lima, an aape a to arbitration may be taken as if his decision had boon rondoro(f argain;3t the party appealing. Whenever the words "directed", "required", "pcrmittod", "designated", "considered necessary", "presoribed", or words of liko import are unod, it shall be understood that the direction, roquiremont, pormissiAn, order, desig- nation or prescription, of the LNGINLI)R is intondod; and nlmi.larly, the words "Approval", "accoptabl.o", "satisfactory", or word, o1' 'l.ikr, import ;hall mean approved by or acceptable or satisfactory to the EfIGI,Nl;l;lt. 2.03 SUPERINTENDENCE AND INSPECTION. It Is agreed by tho CONTRACTOR that the XNG1NP,M shall be and is hereby authorized to appoint -from time to time such subordinate engineers, supervisors or inspectorn as Lho said I;NGINE11M may deer. proper to inspect the material furnished and the work done under this agreement, and to nee that. the said material. W furnished, and said work is•dme in accordance with the speoifi.oationo therefor,, The CONTRACTOR shall f%xrnioh all reasonable. aid. and assistance roquirod by the subordinate engineers, supervisorm on iiepoctors for the propor inspection and oxamination of the work.' The CON'TRACT'OR. shall regard and obey the di.r+jeti,ons and instruc- tions of any, subordinate engineers, oupoi+visors or inspoctors so, appointed, when such directions. and instructionu are consistent witli the obligations of this Agreemont and the aocompanyinl, plans and spocifi.cations; provided, how ever, should the CONT WXT'OR object to any order by any cubordina.to engineer, • supervisor or inspector, the CONTRACTOR may within nix (6) days !Make written appeal. to the ENGINERH for his decision. 2.01E CONTRACTOR'S DUTY AND: SUPERTNThND1;I CE4 The C011TRAC'COR (shall fS,tvo per Tonal aittention to the faithful proseoution, mid;comp.l,otion of this contract and shall keop on the worlt, during its progress, a competent nupcri.ntondont and any necessary assistants, all satisfactory to the EMOMBf;R._ 'T'ile super- intendent shall represent : tho CONTRACTOR in hit; abgonoo and al.]. directions given to him nhall be as binding as if given to tho CON'TRACT'OR, Important directions shall be confirmed in writing to the CONT'ItAC'.POR. Other, direc- tions shall be so confinhad on written request in oaoh caeie, 2.0' CONTRACTOR09 UNDERSTANDING, It is understood and Agreed that the CONTRACTOR Met by careful examination, satiufied hi.nlselr, as to the nature and l.oeaLion of the work, this confotvsiation of the ground, tho character, quality and quantity of the materials to be encountered, tho character of equipment and .fla6il.i.tlos needed preliminary to and during the prosecution of the work, the gornral and ).coal conditions, and All ethor mattoro which cant in any way affeot the work under this contract.' do verbal agreomont or conversation with any°o.ffioor, agent or employoe of the OWNER, either be'foro of after the execution of this contract, gliall affoot'or modify • any of the Corms or obligations herein contained, • '1-1r-G0 9 ?.A.(._,.CIIARACT'1~R or" WOIIKMIPIN, The CONTRACTOR agrees to employ only orderly and r,ompetnnt mon, skillful. in the performance of the type of work roquired under thi;i contract, to do the workl and agree that whenever the ENGINEER shall in- form hire in writing that any man or men on the work are, in his opinion, inoom- potent, unfaithful or disorderly, such man or men shall be di.ncharged from the work nrld shall riot again be employed on the work without Lho IVIIINEI;R'8 written cpnr;ont. 2,j__CON'I'RAC'!<'Oli'S~3UILpIN . The building of structures for housing man, or the orection of tents or other forms of protection, will be permitted only at such placos as tho ENGINEER shall. direct, and the sanitary conditions of the !;rounds in or about such structures shall. At-, all times be maintained in a manner satisi'actory to the ENCINEER, ?,mil )ANIT'n=, Necessary sanitary conveniences for the use of i.aborers on the work, properly secluded from public observation, shall be constructed and maintained by the CONTRACTOR In such manner and at such points as shall; be approved by the ENGINEER, and their use shall: be strictly enforced, 2.Oc1_J101' DRAWING J+ The CONTRACTOR shall tiubmit to the ENJINEFIR, with such promptness an to cause no delay in his own work or in that of any other Con- tractor, four copies, unless otherwise specified, of all shop Anil/or setting drawings arid schedules required for the work of the various tradesr and the ENGINEER shall pass upon them with reasonable promptness, making desired eorreotions. The CONTRACTOR shell make any corrections required. by the ENGTNEER, fil.o with him two corrected oopion and furni.eh such other conies aH may be needed, The ENGINEER'S approval of such drawings or schedules shall not rel.iove' the CONTRACTOR from respont>ibil:i.ty for deviations from drawings or specificrations, unless he has in writl.nl; called tho ENGIN1130,10S attention to such deviations at the t i.mc of subminsi.onj nor shall it relieve him from responsibility for errors of any sort in nhop drawings or sohoduiesa ?.10 PRE'l114INARY APPROVAL, The ENOINEER shall not have the power to waive the obliga ti:onn of this contract for the furnishing by the CONTRACTOR of good material., and of his performing good work as heroin descrilx,df all in full accordance trith the plans and spocifi.cations. No failure or omission of the ENGINEER to condemn any defective work or matorial. shall release the CONTRAC- TOR from the obligations to at once tear out, remove and properly roplaco-the same at any time prior to final acceptance upon the discovery of said defective work or materiall provided, howevor, that C.a ENGINEER shall, upon request of the CONTRACTOR, inspect and accept or reject any material. furnished, and in event the material has been once accepted by the ENGINEER, such acceptance shall, be binding on the OWNER, unless it can be cloavl.y shown that autih material furnished doom not moot the npoci:fioations for this work. Any questioned work may be ordered taken up or removed for re-examination, by the ENGINEER, pri.oz• to final. acoeptanre, and if found not in Accordance with the specifications for said work, all expense of removing, re••examinaLion and replacement shall' be borne by the CONTRACTOR,, otherwise the expense thus in- curred shall be allowed as EXTRA WORK, and shall be. paid for by the OWNCRf pro- vided that, where inspection or approval: is speolfically:required ,by thw apooi- ficationr, prior to performanco of certain work, should the CONTRACTOR proceed 7-15-6o 1.0 « with such work without requesting prior inspocLion or approval, he shall. Mar nll expense of taking up, rcmovint,;, ana replacing, Lhi.n work if so directed by the ENO.1NE'ER, Z.~1 UFJ E,7_ AN 111E' .ft RliM!1FZ , It in furl hor al;rood that if the work or any part thereof', or any material. brought, on the rsii;c of the work for use in the work or incl.ectod for the name, shall be deemed by the LNOINESH as un- suitable or not in conforni.Ly with the spoci.ficati.ono, Lho CONTRACTOR shall, after receipt of written notice thereof from the EN0IINEER, forthwith remove Much material. and rebuild or otherwise remedy such work no that it shall, be in full. accordance with this contract, 2, CII f'S 1AND Wf EtATIOf~S. Tho CONTRACTOR furt,hor agrees that the OWNER may make such changes and alterations as the OWNER may see fit, in the line, grade, form,'di.mensions, plens,or materi.alri for the work herein contemplated, or any Part -LborAOf, either beforo or aftor the boginning of the construction, without affecting the vali-M.Ly of this contrac', and the accompanying perform- Antic and pa!nnont binds, Tf such chtzntMr or altorat.i.ont? diminish the quantity of the work. to be done, they shall no;, co,istituty tho banin for a r,lnim for damagea, or anti- oipated profit'son the work t,hal, mny 1xi diopentsad wi.tht except as provided for unit price i.temn''Und.ei, Section 5 "Measuromnnt and Payment", If the amount of work i.s increased, and the work can fairly Ix, classified under the speci- fiegtions, such ir,aroano shrtll txa paid for aecorling to the quantity actually done and at the unit price, if any, establ.ishod for such work under this con- tracts exoe t as provided for unit price itomo under Section 5 °Measuroment and 1'ayment~' othorwine, such ad(litionitl work shall be paid for as provided. 0 under extra Work. In case tho 01CER ;shall mako such chaugurs or alterations as make unoless any work already done or mtltorial already furnished or used in said work, then the OWNER shall. recompense I;lro. CONTRACTOR for any material or labor so urled, and for any actual. loss occarrioned'by such ohango, due to aatital oxperisOm incurred in 'preparation for the work as originally planned. x.1.3 RtC+L'l', 0 L"14 )r t m S0DIFY tdETliO All JEQUIgtiENT, If at any time the methods or equipment used 'by the CONTRACTOR are fount] to be inadequate to secure the quality of work or the rate of progross required under this con- tract, the TOWI"N1;ER may Ordor the CON'RACTOR in writing to increase their safety or imps^ove their ohavaoter and offio .enoy, and the CONTRACTOR shall comply with such order. If tit Any time the wovk.Inr, force of the CONTRACTOR is inadequate for securinp the progress hrrnin nprcifiod, tho CONTRACTORI shall, if so ordered in writing, increase his ;:orco or equipment, or both, to such an extent as to give reasontblo atrsuranco of compliance with the schedule of progress. 7-15-t;0 l..l. 3, GENERAL OBT,IOA`1'IONS AND RLSPONSIBTT,1`C1T.S '1,.0 KEEPING OF PL ALL A I)_ SPi11CI,F,1CATJONS ACC U 8STBLL. 1'110 I0 'NC1xNtL+'R shalh furnish tho ~%ONTRACTOIt with an adequate and reasonable number of' copied of al.1 plan, and sped ficati.onn without oxpo nso Lo him, and the CONTRACTOR nhal) knob one ropy of i,hc name conntantl.,y accessi.bl.o on the work, with the latont revisions noted Lnornon. 1.0? OWNERSHIP OF DRA41 O3, All. draw:i.ngnt spocifications and copies thereof furnished by the ENOINERR shAD, not bo roused on other work, and, with the exception of the signori contract sots, Are to be returned to him on request, at the completion of the work. All models are the property of Lho OWNER. I,Q3_ ADFQUACYOT DESIGNo It is understood that the OWNER believes he has employed competent engineers and designers. It ie, therefore, agreed,tha', the OWNER shall be responsible.. for the adequacy of the deeignt.eUrfictenoy of the Contract Documental the safety of the structure and the praotioabllity of the opere+ions of the oompletod projoctl provided the CONTRACTOR hae com pl.ind with +,io requirements of the said Contract Documents, all. approved modi.- fications thereof, and additions and alterations thereto approved in writing by the OWN4114 The burden of proof of such oompl.iance.shall be upon the CON TRACTOR to show that he has complied with the said;requiremen W of, the Contract Documents, approved modifications thereof and all approved addi.t ona and alterations thereto. 1.01i RTORT 0L .N't'RV, The OWNER reserves the right to enter the property or ~ location on which the works heroin contracted for are to be, constructed or installed, by such agent or agents As he may eloat, for the purpose of super- vi.3iig and inspecting the wortcs or for the purpose of constructing or install- ing such collateral work ad said OWNttl may desire. r 3.05 COT,LA't RAL CONTRA TS. The OWNER agrees to provide by separate contract or othcrw.iso, all labor and material essential to the completion of the work specifically excluded from this contract, in ouch manner as not to delay the Pfogr'ass of the work, or damage said CONTRAC`T'OR, except where such delays are opeoifioall,y mentioned e7.sewhorn in the Contract Documents. . 1.OG DTSCItEPANCI) S Abp Oh~i~STONS6 It is further agreed that it i.s the intent' of this contract that all work must be done and all material must Ix, furnished in necordance with the r,onoral.ly accepted praotices and in the event of any discrepancies between the soparatc contract doeumonte, npoai- fioations or drnwingst tho TrNOI;NBER shal.l..dofi,no which is intonclod to apply to the work, 3.47_- EAUZPMJ'N`1' MA'1I ItzAJ ANLJ. C~JNSTRUCTTON PI.AN'T. The CONTRACTOR shall pro- vi•dn all tools, equipments machinery, materials,and construction plant and facilities nocoseary in the prosecution and completion of the contract, except as otherwise specifically not forth to ba provided by the O4841.R. The CONTRAC- TOR shall tx. responsible for the Bares preservation, conservation, and protec- tion of all. materials, oupplios, machinorys equipment, tools, apparatus, accossories, facil.ition, All moans of construction, and any And all. parts of • 7-15-60 12 the work, whether the CONTRACTOR has been paid, partially paid, or; not paid for such work, until, the entire work is completed .,rid accepted., 3,08, 1) A4'=lam. In the event the CONTRACTOR is damr,f;Ad in the course of the comploti.on of the work by the act, naglect, omission, miatake,or default of the OWNER, or of the ENGINEER, or of any other CONTRACTOR employed by the OWNER upon the work, thereby causing loss to tine CONTRACTOR , the OWNER agrees that he will reimburse the CONTRACTOR for such lose, In the event the OWNER i9 damagod in the course of the work by the net, negligenco, omission, mistako,o, default of the CONTRACTOR, or should the CONTRACTOR unreasonably delay the progress of the work being Bono by others on the job so as to cause lo;3s for whi.uh the OWNER becomes liable, then the CON- TRACTOR shall, reimburse the OWNER for such loss. 3.09. I'ROTECTTOH AG(~,~N '1 A :C' I)I'tIT TO DIPLOYL S marl 7 t11 FU iI,IC. The CONTRAC- TOR shall take out and procure a policy or policies of workmen's oompvnoa- tion insurance with an insurance company licensed to transact. business in the State of Texas, which policy shall comply with the Workmen's Compensation Law of the State of Texas. The CONTRACTOR shall at all times exercise reason- able precautions for the nafoty of employees and others on or near 'the work" e.nd shall comply with all applicable provisions of Federal, Statb and Municipal safety laws and building and construction codas. All. machinery and equipment and other physical hazards shol,l be guarded in accordance with the "Manual of Aocidont:Prev©ntion in Conntruoti.on" of the Associated General Contractors of America,exoept.where incompatible with Foderal, State, or Municipal lawn or regul.ati.ons. Tile CONTRACTOR shall provide such machinery guards, safe walk- ways, ).acldorrs, bridgch, gangplanks, and other safety clevions as may, be re- quired by the ENOrINEOR ar, rcyuisitc to the prevention pf accidents. The • CONTRACTOR and his SuroLioe shall indemnify and savu harnlesu the OWN):;4 and all his officers, agents, and emplo,ynes from all suite, actions or claims of an,y character, name and description brought for or on account of any in,jurtes or damages racnivod or sustaincd,b. any person or person.,; or prop- arty, on account of tiny negligent act or fault of CONTRACTOR, his agvntb or employees, in the oxecution of amid oontract; or on account oS the .failure' of the CONTRAC'T'OR to provide necessary barricades, warning lightn or signal , and will be reqquired to pay any judgment, with coats, which may be. obtained against the OWNER growing out of such injury or damapro, 3.1,4 RME AND PAYMi;L3 Qt) I Unless otherwise specified, it in further agreed by the partie.; to this Contract that the CONTRACTOR will execute separate performance and payment bonds, each in the sum of one hundred (].00) percent of the total oontract price, on standard forms for this purposo, guaranteeing faithful,porformanco of the work and the ful- fillment of any guarantees required) and further guarantecinR'payment to all persons supplying labor and materials or furnishing hirb any equipment in the execution of the Contract., and it is agrood that this Contract shall not bo in effect until such performance and payment bonds are furnished and approval by the OWNER. Unless otherwise approved In writing by the OWNER, the auroty company • underwriting the bonds (shall be aecuptabl.e according to the latest list of companion holding ecri.i_fieatee of authority from the Secretary of the Treasury of the United ,5tatos. '7-1.3~G0 l3 lJnle,^,s othortiri.sc specirio(f, the: sort of the premium for the performance 1 and pa,ymcnt bonrh sha'l`l he ineludetd in the CONTRACTOR'S proposal. .i. _.LSSFS I~jtOl4 NA'fU[tAL CAUS1?S, Unless ot.herwi.m) spoci_faed, rx'Ll. loss or dam- age to the CONTRACTOR ar i ,;inp, , it of the nat.in e of the wo, to it) action tion of tho olomonts, ov from an,y unforseon e i rcumsi,ancrs ndthf , from Lion of the same, or f m unusual obsLructiono or difficulties which mayprom ccu- encountered ',n the pro; ocution of the work, shall ho sustained and borne by the CON1'VACTc at, his osrn coat and axpnnan,. 1 P, PCth'f11 'ILTOLo ADJO~ 10 N.INQ 'It01'ER 4 The said CONTRACTOR rsltal.l take proper monnr rya proLoct the adjaeent or ad,joinni: properly or proportie;a in any way encou, prod, which might, b injivied or, no.Hort97,y af.focted by sn,y process of comfit -Lion to be undor, Aeon unrior Lhar, Agreemont, from any damage or injury by reason of sald proses: of constracf.ion; and he shrcll be liable for any and all claims for such damage on account of his failure to fully protect all ad- ,joining, propnrt,y. The CONTRACTOR a[!reos to inelemni.fy, save and hold' harmleae the r, IPM :.gainst any claim or claims for damfrges duo to any im jury to any adjacont or ad,joi.riinp proporty, arising or r;rowing out of the tho contraoti but any such indemnity ehal.l. not, apply to any claimfoi' anyekind ar.ici.Ang out, of the existence or character of tho work. .1: Q' 1 ::0.11. L1 C.~I, ~t O l 1!, ION RAC1'01tS. LAHOI rIl v l rII+NTS If i?_ rtncttzM It-~Y•_ _gaN'1' ANfJ 5U1'p1 ~x1: NAT tfAL' ~L he . ,.ll indemnify and save the OWNER harmloas Prom rillCclaimsrrrowing outhof U Lawful r;omrrnds of sub-eontrrletorr,, laborers, workmen, moohanics, material.- i rT,I,rr, Ind f.'umishors of machinery and pari s thereof,' oquipment, power tools, and :rl' irplies, including comminsary, incurred im the furtherance of the perform- a III of this contract. Whon eo doairnd by the OWNER, the CONTRACTOR shall furnish nat:sfactory ovidenac that all obltftations of the nature hereinabove dogignate< have boon paid, discharl;ad or wai.vod. Tf the CONTRACTOR rails so • cio, then the OWNER may at the option of the CONTRACTOR either pay di.roctly unpaid balls, of which the OWNER has written Erotica,' or withhold from the f'" 'RACTOR08 unpaid compensation a sum of' money dotrmod reasonably suffi.ciant w liquidate any and all such :lawful c:laimm ur,d.il 'satisfactory evidence is furnished that a11..l.iabi, i.tie:t havo hoom fully discharged; whereupon payments to the CONTRAC'IUN shall to rommod in frrl:l, in accor,limee with the tr ms of this eontrac;t, WL in no event shall. tho proil,sions of this sentence be con- strued to Imposo any obligation upon flip OWNTJi by either the CONTRACTOR or , his "mreLy, 3.~!1af TL"t ' "I AIRLi It0YA1,'F 17S 01,1 Y '3~;h'P I h; p' O slval.l lacy n'll royalties and Iic;otiee fens, and shLhall providelfnrCthe uno0of an + dOrji(,n, r'' Vi.Cr, mLll,Ul'iat or Il OU 1 0,s covered by 1.r-Ltors pa,,ani; or copy- right by sultabl.o lctral afreoment r i.t-h WIP pnLanLoo or omer, The CONTRAC- Tnlf ,hall, rlofend all, s1.11L> or claims for irtfringomnnt of any patent, or "Op"n iprrl, r)"110 gird Mvkl I i.ndomn i f.,r and sove Um OWNER harmless front any Loss c,:.we,it nL thoreof, oxenpt LhaL tho OWNER sha1.1, defend all ,nd claims and shal.,l, 1)0 roSpon!, ,bl.e Tor III,], such lose when a particularri_ts r deg Lgn, floviee, matn.Iialor I,r,rcesai,rr the product of a parti.oul,rr mariti- faetur°nr or manrlfacturcr., is npoctrtnoOr rcquirod 1y the OWNER;' pre, aded# ~ a♦ however, if choice of alLernata design, doviee, matorial,or process is >l..l.owed to the CONTRACTOR, then CONTRACTOR uhall indemnify and save OWNER harml.oss from any loss; on account thereof, If the material. or process specified required by the OWNER is an infringement, the CONTRACTOR shall lxi ror;pons!ble for such loss unless he promptly gives such information to the OWNER. 3.a,1i _ Ia~,u`S ORDINANQ Thn. CONTRACTOR shall at all time,) observe and comply with all. Crdnral, State and local. laws, ordi.nancoe and regulations, which in any manner affect Lhe contract or the work, and shall indemnify and =rave harmloss the OWNEH against any claim arising from the violation of any such laws, ordinances, and regulntionsp whothrr by the CONTRACTOR or hie ompl.oyees, except where suoh violations are called for by the provisions of the Contract Documents. If the CONTRACTOR observos that the plans and speoi- fioations are at variance therewith, lie shall. promptly notify the ENOINEER in writing, and any noooseary changes shall be,adjustoei as provided in the contract for changes in the work. If the CONTRACTOR purforma,any work knowing it to be contrary to such laws, ordinances, rules and regulations, and without s?ich notice to the ENGINEER, he shall bear all. costs arising; therefrom. In case the Owner is a body politic and corporate, the l1Lw from which it derives its powers, insofar as the same rogul.ates the objects for which, or the manner in which, or the conditions under which the OWNER may ontor into contract, shall be controlling, and shall. be considered as part of this ooritract, to the same effect as though embodied heroin. 3,16.- AMUMEELA ND SUIILET . The CONTRACTOR further agrees that he will. retain personal control. and will give his pornonal attention to the fulfill- ment of tJ i•s contract and that he will not assign b;r Power of Attorney, or otherwise, or sublet said contract without the written consent of the OWNER, and that no part or feature of the work will be sub'.et to anyone objectionable to the ENGINEER or the OWNER, The CONTRACTOR further agrees that the stab- letting of any portion or feature of the work, or materials required. to the porfurmance of this evntraot, shall not rel.ievo thu CONTRACTOR from his full obligations to the OWNE11i as provided by this Agro4ment. 3.17, CON''RAC''OR+S AN[)'SUD-CON'fRACTOji'S INSURANCt, The CONTRACTOR shall not comrtonce work under this contract until he has obtained, all, the insurance riqui-ed under the following sub-paragraphs and such insurance has been approved by the OWNER, nor shall the CON'RACTOR allow any sub-octtractor to commonrn work on a sub-contract until such Sub-contractor han obtainod.oom- pl.oto : ruranco coverage nn roqui.rod for the CONTRACTOR. ;iL17,a. ~Qlfii'lrN5A'fION q Jr r;, The CONTRACTOR shall procure and shall main- tain during the l.if„ of thin contract WorkmenIn Compensation 'rns+.irannF for all of hir3 employeon to be engaged in :work on the project under this con- tract and, in oaso of a,ny such work sublot, the CONTRACTOR shall. require the sub-contractor similarly to provide Workmonla Componiati,on Insurance for all of the latt©r's omploycen to he engaged in such work, unloss such ninployens are covered by the, protection afforded by the Contractor+s Workman's Compensation Insurance. In rase any class of employees ongaged in hazardous work on the pro,jont undor this, contract is not protected tinder the Workmon'n Compet,nation '3tatkitog the CON'TRACT'OR shall provide and • 7-1.5-Go 15 shall cause each stab-contrac or to provide adequate E Ployor's (Ioneral Li.a- ~ bil:.1"y Insuran", ror the protoc+ on of such of his emPloyees nol, othorwi,se prote ted. ,.122 CONTRAC'TOR'S PUflT,IC LI'A)37I,ITY_.AHD I'ft0['i RTY nAMA_~_0 XN ,Vj0_N0 . The CON- '1UCTOR gha1 procure and shall maintain d ring ng the Tlfc of this contract Contractor', Pnbl.ic Liability Insurance in an amount. riot less than $50,000.00 for injuries, including accidontal death, to zany one persontt anrd subject to the same limit for each person, in an amount not loss than ,5100,000.00 r,- account of one raceidont, and Contractor's Propor`ly Damage Insuranee in an amount of not loss than $25,000.00 on account or ono accident and $50,000.00 app, regca to . I, l,'13 ATJUI'1'10HAb X BUTT. 'rho C014TRACTOIZ shall furnish inniarancn as separ- ate policies or by Additional. endorsemont to one of the above mentioned poli-• cies,and in the Amount as set forth "or public liability and property damagb~ the .following insurances (a) Contingent Liability, (i,) 'Blasting,, prinr to any blasting being done. (c) Collapse of buildings or structures adjacen1% to oxoavation (if oxcavations art, to be performed adjacent to same). (d) Dativ to undo rproultd util.iLion. `Puildors rislt (whero ;above-r;round wtructrtres arc, involved). A11Thtnl3xT,F; .1 ,UiZCI: it017I v,~ flJtt N) T'1t~CF~Y nAiiAr,F . The CON- TRACTC?!t ,hall raroctrre, and mairttnin, dur.lnp the l ; fe of thi's Contract, Automnlaile 1'n;uranco in an a;raount not lrsa ttaan $?.5000 f'or injuries, inrl.uding accidental death, to any ono Tsrsen Arid ,ui>joct I,o the same limit for each per- son, an amount r;ut less titan ~15C,000 on ,account of ono aeci.dent,'and automobile properly damage insurance i.n an ramaunt not less than $5,000. ~~175 SCOYr 0 7N',1)jjAgQL AND SP CIA~iA1ag_PE- The Insurance required undor the aboVe parAgraphs shall provide adequate protection for the CONTRACTOR and his scab-contractors, respoctivol.y, against damage olaims which may arise from operations under this contract, whrthor ouch operations be by the insured or by any one dirnetl,y or indirootly employed by him. Insurance also shall be provided against special ha7,ards, U any, as -nay be set forth in the Specica'l Conditions or Special. Provisions, or alsowlrere in these 'Contract'Documents& ;i,,IZ6 PRQQ 0 ' Cr1 Zk1A r 03'_JQ§URANCE, The CONTRA,'A'OR shall furni,ah the OAP 9R with satiaf•xctory proof of oovor&ge by insurance roqui:red'in these 'Contract documents in amounts and by carriors satisfactory to the'OWNRR, Proof of carriarre of insurance by 81tb-contraot;or, ,shall al o' Teo furnishod. 7-15-6o 16 4, PROSECUTION AND PROGRESS ?L.oi 'P?MJ ANR ORDJ It OI' COMPLt;1''C, A. It is the meaning and intent of this eontraot, unless otherwise herein specifically provided, that the CONTRACTOR shall be allowed to prosecute his work at such times nrid seasons, in such order of precedence, and in such manner as shall be roost oonducivo to eoorc-• omy of oonstruction; provided, however, that the order and the time of prosecution shall be such that the work shall be substantially completed as n whole and in part, in accordance with this contract., the plans and speci- fioations, and within the time of completion designated in the Proposall pro- vided, also, that when the OWNER is having other work done, either by contract or by his own force, the ENGINEER may direct; the time and manner of conotruo- tinp, the work done under this contract, no that conflioL will be avoided and the cottstruotion of the various works being done for the OWNER shall be har- monized, The CONTRACTOR shall submit, aL such times as may reasonably be re- quested b the ENGINEER, schedules which shall show the order in which the CONTRACTOR proposes to carry on the worl(, with dates at which the CONTRACTOR will start the several;, parts of the work, and eatimatea dates of completion of' the several riarts, 11.07 t;XTEN3ION AT I, shoo'ld the CONTRACTOR be delayed In the completion • of the work by any not Or neglsei. of the OWNER or ENGINEER, or of any employ- Otis of either$ or by other contractors emplo,yotl by the .OWNER,, or by changes Ordered in the work, or by atrilccs, lookouta, fi.r?sp and unusuol delays by eOMMOn carriers, or unavollablo oause or causes boyond the COITRACIOR'S control, or by any cause which the RNOT Ii„It shall decide Justifies the delay, then an extension of time shall. be allowed for completing the work, suffi- cleat to,'compensate for thn,dol,ay, the amount of the extension to be deter- minod by the ENGINEERI'provided, however, that the CONTRACTOR shnll.gi.ve the ENGINEER prompt notice in writing of the Caruso of such delay, 01 I,fNDRANCES "")SILL XS. No claims shall he made by the CONTRACTOR for damages resulting f rom' hindrances or delays from any cause (except where the work is stopped by order of the OWNER, during the progress of any per.. tio? of the work embraced in this oontraot, In case said work shall be stopped by the act of the OWNER, then such expense as in the judgment of the,ENGINEER is Caused by sunh stoppage of said work shall be paid by the OIW'NER: to the CONTRACTOR. ~604_ T,I~U DATEj7 D WBa6 4 The CONTRACTOR agrees that time is of the essence of this contraot,' and that for each day of delay beyond the nltmber of days herein agreed upon for the completion of the work herein specified and con traoted for (after due allowance for such extension of time as is provided for under Fxtension of Time hereinabovo), the OWNER may withhold permanently from the CONTRACTOR'S total compensation, the sum set forth in the Special Conditions or s~ppecial Provisions (or as elsewhere set forth in those Con- tract Documents) as stipulated liquidated damages for such delay, • 7-15-G0 17 .5, MEASUREMENT AND PAYNEtv'i • ~1 (x;11 N'1'1'! TL;~ AND h~ASU1tT'ht1~~N.'1';, N .1_ o extra or customary measurements of any kind tatll 1y) al.l.owecl, but the actual measured and/or computed longtho area, noli.d contentn, number and wclght only shall. be considered, unlarss otherwise • sl)nci.fica-11y provided, 5.Q2 ISTIRA'flb QUANTITIES. This agreement, including the apeoi,f:loatiotis, plans and cot.imate, is intended to show clearly all work to bCi clone and materi- al to be furnished hereunder, Where the estimated quantities ar+c shown for the various rla;tor,s of work to be dono and material to be furnished under this contract, they are approximate and aro to Ix) used only as a Ixtal.n for estimat- ing the probabl.r,'r.ost of the work and for comparing the propoeals offered for the work. :[t is understood and agrood that the actual amount of work to be done, and matori.al. to be furnished under this contract may differ somewhat from these ostimates, and that where the basis for payment under this oontraot to the unit price method, payment shall. bo for the actual amount of such work clone and the material £rtrni8hed. 1dkare'payment is based on the unit price method, the CONTRACTOR Agrees that lie will make no claim for danapas, anti.oipated profits or otherwise on account of any differences which may be found between the quantities of work actually done, the material actually furnished under this contract and the estimated quantition contemplated and dontainod in the proponall provided} homver, that in case the actual quantity of any item should become as much as 259 mot's than,. or 25% less than the estimated or contemplated quantity for such :U{oms, then aither party to this Agreoment, upon demand, shall be entitled to a revised coon lderation upon the portion of the work above or below 25% of the asti.mnted quantity. • Any revised oonside rati.on is to be determined by agreement, between the parties, otherwise by the torms of this Agre©ment, as provided under "Extra Work 5"Q 1 isltTCkl Oh' ILK. in consideration of the furnishing of all tho necessary labor,,equipment and material., and the completion of all work by the.CONTPACTOR, and on the completi.on,of all work and`of the delivery of. all material, embraoed in this contract in full oonformity with the specifications and stipulations horein contained, the OWNER agrees to pay the PONTRACTOR the prices set.: forth in the Proposal herato attached, which has:burn made a part of thief Oontraot► The CONTRACTOR hereby agrees to receive such prices in full for furnishing Ali material and all labor required for ;he aforesaid work, also for all expense ineuered by'him, and for tell and truly perf6rming`the same and the whole tcrea£ i17 thb manna) rindactorcling to this Agreomont, the at,tachod specifi~- cations and requi:t%molits of the ENGINEER. .S~S _1'L+l; IT_ A1, YAY7l % ",sty On or Ix)forp I.ho 10th clay of each month the ENGINEER shall pilOare a statement showing as completely as practicable the total value 61` the stork done ,iy tho CONTRACTOR up to and Including the Tast.day of the preceding montlrl na.ui statement fthalll. also include the value of all sound materials dol.iverod on the site of the work duct; are to be fabrieated into • the work. 7-15-60 1.f3 • r The OWNER shall. thrn pty the CONTRACTOR on ov before the 15th day of the currant month tha total amcunt of the XMINET,'1'S statement, loss 10 pcrcrnt of t,ho amount thorco£, which TO portent i,hall. be retained until, final payment, and further lens Fill. previous pa,ymanta anti all further sums • that may be retainod by tho OWNER tinder the torms; or thin Agreement. It is understood, however, that in once the whole work be near to completion and some unexpected and ununual. ,+alay oocurn clue to no fault or neglect on the part of the CONTRACTOR, the OWNER may - upon written recommendation of the ENGINEER - pay a rcasonablc and equitable portion of the retained percentage to the CONTRACTOR; or tho CONTRACTOR,at tho OWNERIS option, ma be relieved of the obligation to fully complete the work and, thereupon, the CONTRACTOR shall receive payment of the balance due him under the contract subject only to tho condi.tionn stated under "Final Payment". 5.05 USk Ol' CQMI'LE1'EL_`___) PO z0Q , The OWNER shall have the right to take popsession'of Aid use any completed or partially cor')leted portions of the work; h6twi.thsthnding'0e time for completing the anti. a work or suoh par- tions may not' have expj.red,but suoh taking possession 'And use shall not be. deemed an aobeptAnoe of tiny work not bompleted in aooordanoe with the Contract `Documents,' If such prior use increases' thn cost of. or delays +.he work, the CONTRACTOR shall be' entitled Lo such extra boi„f.ansation, or oxtensinn of time, or'both, _as the ENGINEER may determine. 5sD6 F'1NAL COt~Ld f'rn~ ANA ~1CC )TANCt'. Within tors (10) days after the • CONTRACTOR hag given the ENGVILER writLon`notloe that the work hag been com leted or aubstantial' y iompl,eted, thy, ENGINEER and 'the 01NER shall i.nspaet the work and within said time, if the words be round to be aordw pletod or substantially compl.oLed In accordance with the Contract n')cu- • monts, the ENGINEER shall issue to the OWNER and the CONTRACTOR hi.e Corti£icato of Completion, and thereupon it shn,1.1 be the duty of the OWNER wiit,hin ton (10) days to tsnuo a CorLlfieate of Acceptance of the work to the CO J'11=710i?'. 5Y07, . I`INAI, JIL4 pT. Upon the iseuanec of the Certificate of Compl.ation, th6 ENOI MR ghhll procoed to onka final measurements and prepare final stdtement'of"the value' of all. work pert'ono d and matori:als furninhad: under the tormn of the Agreement and shall. certify same to the OWNER, vrho shall pay to the CONTRACTOR on or n.fl.or the 30th day, and before the 35th day, after the date of the Certificate of Completions the balance due the CONTRACTOR under the tprms of this Agreement, provided he ha:, iully per- fo'rme~ hi'n oontractual. oblipationn under the terms of this oontra.otj `and sidd pAymeht shalli bedome'due in any event upon Bald rerfbrmance by the CONTRACTOR, Ne''ithdr, the'Cevtihonnte. of toceptance nor the final payment, nor any provision in the Contract Dorumonts, ohn.ll r6l7:eve the CONTRACTOR of the obligation for ful.fillmont of any warranty which may be required 'in 'the 8poci.al Condition.i of the ,5 ,citications. 5~OEi dyAX ,wm~ H IT1I1,Lf,P, Thn OWNEW may, on account of subseyuontly disc covered ovidence','withhold o4- nultiry the whole or part of any Certificate to' such extent sis maybe necessary to protect himsol.f from loan on account oft • 7-1.5-G0 19 (a) Uofeoti.ve work not remedied, • (b) Claims filed or reasonable ovi.denco indicating probable .filing, of claims, (ci) Pailuro of the CONTRACTOR to »tako payments proper'Iy to sub-contractore or for matorias]. or labor. (d) Damage to another contractor. Whon the above grouncb are removorl,or tho CONTRACTOR provi((os a Surety Bond satisfactory to the OW NR, which will protect the OWNER in the amount withhold, payment "hall be made for amounts withhald becauso of them, 5.,09 1_ )E7,,AyEp pp ~ Should the OWNER fail to make, payment to the:CON- f"cACTOR of the sum. named in any partial. or final sta.tromentf when paygent ~a due, or. should the ENO,IN fI fail to issue any statement on or bof~re the date above provided; then the OWNER shall. pay to the CONTRACTORP in addition to the sum shown as due by such statement, interest thereon at the rate of six percent per annum, unless otherwise sp cifiedf from date due as provided under "Partial. Payments" and "Final Payments", until fu17. liquidate any injury to the OONfTVCTOR growi of paid? ay ;shall Fully n out o s4to h d delelay in pa,ymentf but the right is expressly reserved to the CONTRACTOR in the event payments be not promptly, made, :as provided under "Partial. Payments", at any time thereafter to treat the contract As abandoned by the UWNER and recover compensation., as provided under "Abandonment of Contract", unless ouch payments are withheld in ~ accordance with the provisions of "Payments Withhold", 6, EXTRA WORT{ ANU CLAIMS r C.OI EXY'RA W0 17K- It is agreed that the CONTMCTOR shall, perform all extra Work under the direction of the XNOINrER when presented with a Written Work Order, signed by tho r- I fig subject, however, to the right of the CONTRAC'T'OR to renuire a written confirmation of such Extra Work Order by (,he OWNERv ft` is also agreed that the compensation to 1w paid the CONTRAC'T'OR for performing said Extra Work shall be determi.ncd by, ono or more of the following methods$ Method (A) - By agreed unit pri.oosi or Method (T3) - By agreed lump sum; or Method (C) - If. nel.ther.Method (A) nor Method (D) be:agreed upon before .tho I,,xtra Work is commencodf then the CONTRAOtOR shall bo paid the "actual field cost" of the work, plus fifteen (15) percent, In the event said Extra Work be performed and paid for under Method (C), then the provisions of thi,9 paragraph shall apply and the "actual field cost" is horeby defined to inolude the.aaet of all workmen, such as foremen] time- keepers, mechanics and laborers, And m4terials, supplies, taa.ms,..irucks) ,and rentals: on machinery and equi<pmenti for the time actually employed or used on such Extra Work, plus actual transportation charges necorsaril.y Inourredf to- 0 gethor with all power, fuol, lubricants, waterfand similar operating expenses, 7-15-GO 20 0 also 0.1 necessary incidental: nxponoon Incurred di.rmotl.,y on account of such l'xtra Work, inr.l.itcling Hoci,nl `Jecuri.tyt 0.1(; Are, 1!„nefits and other rayrOll. taxoh, and it ratekblo proportion of proviiumrj on Performance ant[ Aymbnt Bonat, and Maintenance Bonds, and on Pu.b'l,io Jdabi'lity and Prop- erty Damage, tznd Ilorkmon's Coiai]ensal;icn, gird s,11. otlusr lncuranoe as may be rmquired by "my ;Yaw or orclfivAnoo, or directed by tho ENGINEER or OWNF'R, or by them agreed to., Tho ENGINNE'R may d•i.rvol; tho form in which accounts of the "actual, fiold cosV oh,%11 txi kepi, and Lho records of thot,t~ aroobunto shall be mado ~tvai].ablO to the E40MBER. 'rho ENGINEER may also° speol£y in writing, lroforo th ; work conomenoon, the method of do'Lng the work and the t,ygii r,id kind of machinery and equipment +.o be asedi othervino these mattorn shall be determined byi Win, CONTRACTOR, Unless otherwise agrood. upon, the prix o for the uoo of machinery and equipment shall bo dotoxinined by using 100 pevoonL, unless otherwise spooified, of the latc,st irohodul.e of Equipment Ownership Expense adopted by tho Ahtiooiated General ConLractora of America,, Whoro practicable the t6ems and'priobs for the use of machinery and equipment a all be incor- '-poNated in this Written Extra Work Order, Thai fl.£teen (l~ ) percent of 'the "actual field oost" to be paid the CONTRACTOR shall, oover and eom-, psnsato him for hio profit, overhead, goneral_ superintendence and,fi.eld offi.oe expense, and all. other el.omonts of cost and expense not t,nbraced within the "aotuel, field' cost" as herei.tL dofi.ned, sAvo thAt where tho CONTRACTOROO"Camp 'or Field Office) must be maintained primarily on aooount of suoh Extra Workl then thn cost to maintain and operate tho same shall be inol'udad in the "'actual, field cost"No olai.in for Extra Work of any kind will be allowed unless ordered in wr'iti.nr by the ENOINF.M. In cane any ordors or "noLruotiono, either 0 oral. or written, appoar to the CONTRACTMR to involve Extra Work for whioh he ghoul.d receive compensation or an adjustment in the oonstrun- tion timo, he shall make written' rnnu6nt' to the ENGINEER for wri.tton order authorizing such Extra ,Mork, Should a difforonco of opfnio;, triso aft to what does or dben hot'conktitute Extra Work, or as to'tho payment thbrefor; And'th~ BOMBER i.nsints upon i,th performanoo, the CONTRACTOR. shall proceed with the +abrk hA6v making writteh request for written order and' shall keep' an nooirrate account of the "actual field coal'" thoraof, As proViddd uhd6t Method (G)1 The GONTRAGTOR will. thereby prennrve the.ritght to '600i t the ffiRtt61+ of Jfaymottt to arbitration, as horeinbol,ow provided.. 6aD2~ TIM gFi F1Lj1N C~L_ Aj 143. It i.s further agreed by both parLios hereto thttt all quest ohs of disputb or,ad~ustniont presented by, the CONTRACTOR mhal.l be in writing and. riled with the ENGINEER within thl,rty (30) days , after the SVOINEER hao given any dirootionnp older or inntruc„i.on to whibh the C,,,'TRACTOR'd©si.ron'to t,aKe exdopti.on. The ENGINEER shall., within a reabonable timb, rc;l.y to subh written exceptions by the CQN- T'RACTOR and render his final, dootei,)n in writing. In case the CONTRACTOR should apprral-from the EN>INMER',5 decision, any demand for arbLtration shall be tiled with:thb ENGINEER and thtr:OWNER in writing within ton (10) days 'bxtbr• the date of del.i.Vcry to CONT'RACT'OR of the ENOINELRIS, final db'oi sioh. ; It ie' further agvepd that" final acceptance of -the work. by the OWNER and the aeoeptance by the CONTRACTOR of the final payment shall be a. bar to any claims by either party, except whore noted otherwise in the Contract Dooumonts, • 21 x.09 AItt3ITl',A'~ON. All. questions of dispute under this Agreement shall be sub- i witted to arbitration at the rc.7uest of either party to the dispute, The parties may agree upon one arbiters otherwiso, there shall. be three, one named in writing by each party, and the third chosen by the two arbiters so selected; or if tho arbiters fail. to soled; a third within ten (10) dayst he shall be i ehoson bra a l)intriot Judge serving thin County in which the major portion of the project is looated, unlovin otherwi.nc rnpeci.fi.ed. Should the party demanding arbitration fail, to name n arbitor within ton (10) days of the demand, his right to arbitrate shall lapse, anal the decision of the ENGINEER shall be, final and binding on hi.m$ .3hould the other party fail. to choose an Arbiter within t,en (10) days, the rNOTNEMM nhal:l appoint such arbitora Should either party rsfunn or nogloot to supply the arbi.tors with any papers or information demanded in wri.Li.ng, the arbiters are empowered by both parties to take ox pArte proceed- ings. The arbiters shall ant with promptness. The decision of any two,shall be binding on both parties to the contract. The decision of the arbiters upun any question submitted to arbitration under this contract shall, be a'condition precedent to any right of legal action. The decision of the arbiter or arbiters may be filed in court to carry it into effect. The arbitorsk if they, deem the oase demands it, are authorized to award the na ty whose contention is sustained; such sums: as they, deem proper for the time, expense and trouble incident to the appeal,, a:.d if the appeal was taken without reasonable cause, they may award damage i any delay occasioned thereby. The arbiters shall fix their own compensation, unless otherwise i provided by agreement, and shall Assess the cost, and oharges of the arbitration upon either or both parties. The award of the arb1ters must be made in writing. • 7, ADANDONMEN'P OF CONTRACT 7.01 AI3ANDONMH`NT by CON' R,~1 T01t, In oaso the CONTRACTOR should abandon and fail or refuse to resume work within ten (10) days Aftor-writton notifioati,on from the OWNER, or the FNOINIER0 or if the CONTRACTOR fails to comply with. the orders o£ the'2NOINEER, when such orders are consistent with the Contract Dooumonts,'then, and in that case, whisriapsr-formanco and payment„bondo,,exlst, the Suftty on the bonds shall be notified in writing and directed to complete the work, and a copy of said notice shall, be delivered to the CONTRACTOR. After r6ceiving said noti.oo•uf abandonment, the CONTRACTOR shall not remove hom the work any machinevyi equipment, tool's, materials, or euppli,os then on thin ;Job, but the samei together with any materials And equipment under contract-for the vrork, may be held;for use on the work by the OWNER. or the, Suraty'on the'porformanoo and phyment bonds, or another contractor in com- plotion bf the worki And the CONTRACTOR shall not receive any, rental or credit therofnr (exbept when used in conneoti.on with Extra Work, where credit shall be al ,owed as Provided for .undov St,etion h, Easetra Work and Claims), it being understood thaVthir dee 'of sueh~ecjuipmont and materlals will uY,ti.mately re-f duce the cost to bomplete the work and be reflected in the fi,ral settlement, lit, • 7-15`60 22 r Where there is no performance bond provided or in case the Surety nhould fall. to commence compliance with the notice for completion herein- before provided for, within ton (10) days after service of such notice, then the OWNER may provide for completion of the work in either of the following o1notive mannersi /.0.11 The OWNER may thereupon employ such force of man and, use such machinery, equipment, tools, materials, and supplies as said OWNER may -doom necessary to, complete the work and charge the expense of such labor, machinery, equipment, tools, materials, and supplies to said CONTRACTOR, and expense so charged shall be deducted and paid by the OWNER out 'of ' nuch moneys as may be duo, or that may theroafter at any time become due to the CONTRACTOR under and by virtue of this Agreement, In case such expense is lees than the own which would have b6en payable under this con- tract If the same had been completed by the CONTRACTOR, then said CON- 'TRACTOR nhall receive the difference, 'gin case such 6xpense'is greater than the sum which would have been paya')le under this contract if the same ha& been completed by raid CONTRACT'ft, then the CONTRACTOK and/or his Surety, shall pay the amount o,£ sur!!1 excess to the' OWNER`' or ;7,012 The OWNER, under sealed bias, after five,(5) days Notice published one or more times in a nswsprper having general circuiati.on' in-the" county of the 79cnti.on of the work, may let the, contract Por the oompletion of the work under substantially tho came torms' anti' 0e11di.tion6 whic'j" are pro_ • vided In thi.;3. contract, to case of any Inarbase i.n. cost to 'iho2 OWNER under the now contract as coi7carocl to what would have bo00,tt6 cost under' this conLraet,..such incroaso shall„ be charged to the' CONTI1ACTOR`Sihcl the' Surety shall. be and romain bound therofor, 11e416vor, 661 u. cl 'the cast to M complate any such now contract, rit,cvo to be loss than what. w6u`I.d have boon the cost to completo under th l.s o6ntra,, L f the MNT1tACl'OA {end/6hib Surety shall be,credited with the di.ffgronco. When the work shall. have boon tiubstantially compl.at6djM CONTRACTOR and his Surety, shall be, so notified and Cortificates of Completion "and ,Acoeptance, as, provided ih Paragraph 5.06 horoinabovoo hlhall be issued. A complete itemized; statement off' tho cant .Fot aMounts, oertJpi6d to by the PNOINEER an being correct, shall. then be prepared Aild'dAl.ivorod to the CONTRACTOR and his Surety, whereupon the CONTRACTOR and/or his Surety, or the OWNER as the case may be, shall pay the balance due as reflected by said statement, within fifteen (15) days after the date of such Certificate of Completion. In the event the statomen-Z of accounts shows that the cost to com- ploto the work Is less than that which would have been the cost to the OWNER had the work boon completed by the CONTRACTOR under the terms of this contracts or when the CONTRAC'T'OR and/or his Surety shall pay the balance shown to be dun by them to the OWNLR, then all machinery, equip-, ment, tools, materials, or supplies left on the site of the work shall be turned over to the CONTRACTOR and/or his Surety. Should the cost to complete the work exceed the contract price, and the CON'T'RACTOR and/or • his Surety fa:,l to pay the amount due the OWNER within the time deal~ nated hereinabove, and there remains any machinery, equipment, tools, « 7-l 5-60 2g 'natoriala, or sut,pliefl on the site of the work, notice thereof, together with an i.tomired list of quote equipment and mntorials, shall be mai:lod to the CONTRACTOR and his Suroty at the rospeotive addressee designatod in'this bon- traota provided, however, that actual written notice given in any manner will nati.sf,y this condition, After mailing, or other giving of such notice0 such property shall be held at the risk of the CONTRACTOR and his Surety subject only to the duty of the OWNER to exercise ordinary care to protect such property. After fifteen (1.5) days from the date of said notice the OWNER may sell each machinery, equipment, tools, materials, or supplies and 'apply the net sum derived from such aAle to the oredit of the CONTRACTOR and his Surety. Such 'sale may be made at either public or private sale, with or without tlotice,' Re the OWNER may elect. The OWNER shall release any`maehi.nery, equipment, tools, mat'e'rials, or supplies, which remain on the work and belong to persons other than'the'CONTRAC- TOR or his Suretyp to their proper owners, The books on all operations provided herein, shall be open to, the CONTRACTOR and his Suroty. In case the OWNER shall fail to comply with the terms of this,qontraot, &nd 'should fai".l or refuso to oamply 'with daid'terms within ten (16) days after writton notification by the CONTRACTOR, then the CONTRACTOR may suspend or. wholly abandon the work, and may ramove therefrom 1111 machinery, tools Ana oquipmentt and all"matorials on'the ..<iit© of work` that have not ,been, inolt~ded ).n payments to he CONTRACTOR and' havt hot been wrought into the work, And thoreupori the ENGINNEIIL shall Make an cstimate 'o. the total amount earned by the CON`TtiACTh, which estimate shall include the vague of all work agtual,ly pompleted by said CONTRACTOR (at the pricAS stated in the abtAohed proposal where.uni.t prices are used)p the value of all partially completed W rk ~ at a fair and equitable price, and the arrount of all IExtra Work perfo'rmed at the prices , agreed upon, or provided for by the terms of this contraet'and a' r0aeon- able,sum to covor'tho cost of any provisions' made' by the CONTRACTOR to od.rry the whole work to completion and which 'cannot be utilized, The ENOSNEER'Mail 'then M make a final statement of the balance duo the CONTRACTOR 'by deducting'from'th the above ooti,mate.ell. previous payments by the OWNER and all other sums that may be retained byy t,hA OWNER' rider. the terms of this 4reoment,' and' hhal:l' certify same to the OWNf;; who shall pay to tho' CONTRACTOR on or before thirty (30) days after the dale of 08 notification b the CONTRACTOR; the bal'ance'eho'rm by said finsl ntatoment as duo the CONTRA TOR urtdor the termo of thi'sAgr,eoment. 7-1.5-b0 A SECTION I * ONWHAL CONSTRUCTION 8P CIFICATIONS r7'EM N0, 100 _ GENERAL RCAUIDI-kM.NR'9 A. Oenc~ral Construction Recvireme, rates 1. nesorintions This section of the apecifi.oations contains detail specifications and descriptions covering the mayor items of construction and workmanship necessary for building and completing the various units or elements of the project, The specifications AN intended to be so written that only first class workmanship and finish of the beet grade and quality will, result, Barely meeting the very minimum requirements will not be considered as satisfactory. The fact that theso specifications may fail to bo so complete as to cover all details will not relievo the Con- tractor of Full responsibility for providing a completed project of high quality, First class finish and appearance and satisfactory for operation. 2• cc s The work covered under this section includes, but is not limited to, the followings clearing of area of construotion, leveling and grading the site, construction of lift stationo grit ohamber, olarifiers, aeration basins, pump stations, digester, uludge drying lmd, sewers, roolaimed hater system, roadways, testing, etc. Materiai s These apecifioatione are intended to '„o so written that only materials 'of the best quality and grade will Lo "urnished, The fact that the specifications may fail to be su£fici.eut' •;,rnpleto in some detail will not relieve the Contractor of full responcibil.ity for providing materials of high quality and protecting them adequately until Incorpora- tion in the structure, The specifications for materials sot out the mini- mum standard of quality which the Owner believes necessary to procure a satisfactory project. No substitutions will be permitted until the Con- tractor has received written pormisaion of the Enginuor to make a substi- tution for the material which has boon specified, Where the term Uer equal", "or Approved equal", is used it is under- stood that it a material, product, or piece of equipment bearing the name so used is furnished it will be approvable as the particular tra0 name was used for the purpose of establishing a standard of quality noceptable to the Owner, If a product of any other name is proposed for use, the Engineer's approval thereof must be obtained before the proposed substitute is procured by the Contractor, Whorever the term "or equal" is used it is understood to moan "or approved equal". ! LNb OF ITEM « 100.1 A. QPMr-411 The Contractor shall perform all clearing and grubbing, Preparation of the site, and excavation and embankment required for the construction to line, grade, and extent indicated on the Plans of roadways, outfall and by-pass sewers, channel improvements, drainage ditches, buildin&s and other struotures, utilities, sewers and drains, and incidentals thereto, Ana and 0. ebinnt 1, C_la jj: Clearing shall consist of the removal of all. trees, brush, logs, and rubbish from the entire construction site, except for such areas or trees as may be designated by the Engineer not to be disturbed, Attention is called to the fact that moot of tha plant site is covered by a pocan tree orchard, 2, QLbb nftt Grubbing of roots and stumps will be required to a depth of one foot below the finish grade of structural excavations, and to a depth of one foot below the ground surface after the top soil has been removed in areas to receive ombankment. On arena to receive embank- ment more than three foot in depth, no grubbing will be required, provided that the stumps are out off ao close as practicable to the ground surface after the topsoil has been removed, All cleared and grubbed material shall be removed from the construction site and disposed of in a manner satisfactory to the Ngineer, Co &M&Uont it aertgxn,Lt E:;oavation shall consist of structural, trench, and common excavation and shall include all necessary shoring, braoing, sheeting, pumping and bailing and the construction and removal of any required cofferdams or other supports. All excavation shall bo"unolassiw Pied", Whern structures, pavement, pipe lines, or fill are located at such elevations as to rest in or on the weathered organic topsoil, the area to receive them shall be stripped to such a depth as necessary to reach the inorganic subsoil consisting of clay, silt, sand, or a combination of these, 2 tXIL U &.4aya~t Excavation shall extend a sufficient distanoe from walls and footings to allow for forms, installation of services, and for inspection, except where concrete for walls and footing is authorized or required to be deposited directly against excavated sur- faces, Where the exongPation is made below the elevations indicated on the drawings or directed by the rngineer through the fault of the Con- tractor# the shall be matoriald ato the proper t the expense of the Contraotoro • lol..l In order that the Engineer may judge the adequacy of a proposed founda- tion the Contractor, if requested, shall make soundings to determine the character of the subgrade materials. The maximum depth of such soundings will not be required to exceed five feet below the proposed footing grade. It is the intent of this provision that soundings shall be made at the time the excavation in each foundation is approximately complete. The final elevation to which a foundation is to be constructed shall be as shown on the drawings or as raised or lowered by written order from the Engineer when such alterations are judged proper to satisfactorily comply with the design requirements for the structure. Should it ba found necessary to increase the depth of footings from that shown on the drawings, the necessary alterations in the details of the structure shall be accom- plished in a manner as directed by the Engineer, who shall have the right to substitute revised details if necessary. When a structure is to rest on an excavated surface other than rook, special care shall be taken not to disturb the bottom of the excavation, and removal of the last material required to reach foundation final grade shall not be performed until just before the footing is to be placed. All rook or other hard foundation loose material, oleanod, and out to a firm rsurface leither rlovel,ostepped, or serrated, as diroctod by the Engineer. All seams shall be cleaned out and filled with concrete at the time the footing in placed. Excavated material required to be used for baokfill may be deposited by the Contractor in storage piles at points convenient for rehandling the material, during the baclkfilling operations, The location of storage r pile shall be sub,jeot to the anproval of the rngincer. 3. T h r avavat..gns Trench excavation compriebs excavation for all water lines, sewer lines, drain lines, miscellaneous linos, and appur- tenanoes for the various types of linos. All excavations shall be made by open out. Banks of trenches shall be kept as nearly vertical as possible and, if roquired, shall be properly sheeted and braced. Trenches shall be not less than 12 inuheo nor more than 16 inches wider than the outside diameter of the pipe to be laid therein and shall be excavated true to line so that a clear spaoe not lose than 6 inches her more than 8 inches in width is provided on each side of the pipe. Bell holes shall be excavated to insure bell end type pipe resting for its entire length on the bottom of the trench. It the trench subgrade is soft, spongy or disintegrated, the material shall be removed to suitable depth and brought back to re., quired~grade with selected material compacted in place or "embedment gravel". such work, if due to failure of Contractor to provide adequate drainage, shall be his responsibility) otherwise, owner will stand the extra cost involved. The bottoms of all trenches excavated for vitrified clay or conorefo sewers or drains shall be rounded so that at least one- fourth (1/4) the circumference of the pipes will rest firmly on undisturbed soil, unless oonorete cradle or gravel embedment is required, in which case the trench shall be excavated to such depth to accommodate such. Excava- tion for manhotes and other accessories shall be sufficient to leave at 107-2 least 12 inches in the clear bet4*en the outer curfanes and the excavation. Where rook excavation is encountered, the rock shall be excavated a min- imum ovo rdepth of 4 inches and baokfilled to the required elevation with • loose, moist earth, thoroughly tamped to the satisfaction of the Engineer. No pipe shall be laid in a trench in the presence of water. All water shall be removed from the trenches sufficiently ahead of the pipe placing operations to insure a dry, firm bed on which to place the pipe, and treno!s shall continue to be de-watered until after the pipe has been placed and ,pointed. Removal of water may be aocomplichsd by bailing, pumping or by other suitable means. D. .4.mbankmon a s f 1 t 1.~ p:g~f7_l of r t After completion of foundation footings and walls and other ocnstrueticn below the elevations of the fin&l grades, all forms shall be removed and the excavation cleaned of any trash, debris or other objectionable matter prior to baokfilling. Material Shall be placed In layers approximately 9 inches in depth, properly moistened to approximate optimum rrmquirements, end each layer oompaoted by hand, machine tampers, or other suitable equipment to a density to prevent excessive settlement or shrinkage. Where pipes, walks, or other construction is to be placed on or in the backfi,lled materials the backfi.lling shall be done in a thorough manner to preclude after-settlement. paokfilling shall be brought to a suitable elevation above natural ground or grade to provide • for any anticipated settl,emont and shrinkage of the structures. Contractor shall secure the approval of the Engineer prior to placing backfill around any of the structures. • 2. ~3arkf x fo r t~~hogi Backfill shall. be carefully performed to the original grade, and the original surface restored to the satisfaction of the Engineer, or to the bottom of footings or slabs where the trenches are under oonstructi-+,, In pipe tronohos, after pipes have been tested and approved, backfill, eonsloting of excavated materials, free from large olods or stones, or other objectionable material, shall be carefully deposited in layevc not to exceed nix (611) inches in thickness on both sides of thr pipe and each layer thoroughly and carefully compacted until an elevation one (1) foot above the top of the pipe has been reat;hod. The remainder of the baokfill may be thrown in, moistened and thoroughly compacted by tamping, rolling or otherwise. Whenever the trenches have not been properly filled or if settlement occurs, thoy shall be refilled, compacted, smoothed off and finally made to conform to the surface of tho ground. Where the trenches are under roadwaye$ pipes, walks, or other con- struotion, the baokfill shall be as apeoi,fied above except that the back- fill from one (1) foot above the top of the pipe to grade, or bottom of pipe or struoture overlaying the trench, shall be deposited in layers not to e;tceed nine (9) inches in thickness, moistened and compacted to a density equal to or greater than that of the undisturbed material r adjacent to the trench. Where, indicated on the Plans, the backfill in trenches shall be of lean concrete. • 1013 • 3, j anltm41,~t~ This section governs pl.acomont and compaction of embankment or fill for areas on the plant site where fill is required. 1lnbankment material shall not contain topsoil, trees, ntumps, roots, vogetation, large or frozen lumps or other extraneous • materials. The surfaces to receive embankment shall be loononed by scarifying or plowing to a depth of not less than four inches before fill material is placed. The material which has been loosened shall be recompaoted simul- taneously with the fill material. placed at the same elevation. The total depth of scarified and added material shall not exceed the permissible depth of layer. Embankment shall be constructed in successive horizontal layers, in ouch lengths as are suited to the sprinkling and compaction methods util- ized. Prior to compaction, the layers shall not exceed eight inches in depth. Layers of embankment may be formed by utilizing equipment which will spread the material as it is dumped, or they may be formed by being spread by blading or other acceptable methods from piles or windrows dum pad from excavating Lr hauling equipment In such amounts that the material is evenly distributed. M'Lw- quantities of rook encountered in constructing earth ei,xnkment, shall be incorporated into the layers of embankment but shall uut bo includt',d in back ill. Each layer of embank- ment or backfill shall be uniform ah to material, density, and moisture content beforo beginning compaction. Where layers of unlike materials A abut each other, each layer shall, be feathoredged for at least 100 feet or the material shall be no mixed as to prevent abrupt changes in the soil. No material placed in the embankment by dumping in a pile or wind- row shall be incorporated in a layer in that position, but all such piles • or windrows shall be movod by blading or similar methods. Clods or lumps ol'material shall be broken and the embankment material mixed by blading, harrctiaing, or similar methods to the end that a uniform material of uniform density is secured in each layer. 'dater required for sprinkling to bring the material to the moisture content necossary for maximum compaction shall be evenly applied and it shall be the responsibility of the Contractor to secure a uniform moisture content throughout the layer by such methods as may bt, neoessaryy. In order to facilitate uniform getting of the embank- ment material, the Contractor may apply water at the material source. Such procedure shall be subject to the approval of the Engineer. Prior to and in conjunction with the rolling operation, each layer shall be brought to the moisture content necessary to obtain the required density and shall be kept leveled with suitable equipment to insure uniform com- paotion over the entire layer. For each layer of earth embankment, it is the intention of this specification to provide an apparent dry density of the minus k inch material of not less than the percentages given here- inaflk-.er of the maximum dry density of samples of the material as deter- mined by the Proctor Compaction Test (AAS110 P99-38). The apparent dry density of the minus inch material in the 3ompaoted la er shall be calculated as the dry km ight of thri portion passing the r inch screen divided by the volume occupied by this minue k inch material, Embankment i for roadways shall be compacted to 0% Proctor Density, except that the top 6 inches of roadways shall be oompaoted +.o 95% Proctor Density. • 101-4 • 2. c Lij'uAA& Lxeoss excavated material shall be wanted in lour areas on the plant site as di.reoted by the rn,gineor. 4,lasted material shall not be left, in piles but shall be bladed down and smoothed out to present, • a pleasing appearance. F, Wvanitta and Reblaoin Tonsoilt After clearing and grubbing has been completed and before any grading has begun, the existing topsoil shall be moved from the areas where excavation or embankment is to be constructed and shall be stockpiled, Salvagid topsoil shall be cleaned of major root systems, weeds, grass, brush, debris, or other objectionable material prior to spreading on the areas to receive topsoil. On areas to receive 'topsk:il the rough grading shall be aoeomplished so that when topsoil is placed tho finish grade will be as indinated on the drawings. Areas tr- r9oeive topsoil aro the areas around buildings and etruotures where the topsoil is disturbed by excavation or other construction operations. Over these areas the topsoil shall be evenly and uniformly spread to a depth of approximately 4 inches, or in the event of a defioiency in top- soil derived from those areas from whioh the topsoil will be normally secured, then to such depth as permitted by the topsoil material available, C. Qra_ dings The area eround the building, piping, structures, etc., shall be graded and raked smooth and oven so that it will drain generally away from the etruoturoa 'toward tho drainage course an shown on tho Plans, All large clods of earth shall W brokon up and no rooks, trash or debris • shall remain on or near the sur.faco. • END OF ITEM • i lal~5 • ITEM NO. 102 _ ROADS PAU7ME NTS AND SIDEWALKS • A. General$ This item covers the construction of roadways :Inside the plant sito, concrete curb and guttora, and sidewalks; all to line, grade, and typical section indicated on the drawings, B. fc wa _Exoavation and 1Embankmontt Roadway excavation shall consist of all requi od excavation required to construct plant roadways, All excava- tion shall be "unclassified". All excavation materials shall be properly utilized or disposed of. All embankments shall be shaped and finished in conformity with lines and grades as indir,_,±ad on the drawings. 1. L:xcava_atfont Ail excavation shall be in accordance with the lines, grades, and typical sections as shown on the Plana or established by the Engineer, Unless otherwise shown on the plans or established by the Engineer, excavation will ba made to the subgrado of the roadway. 11here excavation to gre;cins established in the field by the Engineer would terminate in unstable soil, the Engineer may require the Contractor to remove the unstable soil ana back£ill to the required grade with suitable material compacted, in an approved manner, to a satisfactory density. Where excavation to tho grade established in the field by the Engineer • terminates in loose or solid rook, the Contractor may be required to extend the depth of excavation six (G) inches and baokfill with se.~.ect material eomi3aoted, in an approved manner, to a satisfactory density, Subject to the approvfi.l of the Engineer the select material baokfill may be obtained • from).. any point wit,tin the right-of-way where suitable baokfill material is available. The Contractor shall conduct his operations in such a manner that adequate measurements may be taken before any backfill., as required above, is placed. 2, Provisall ns for tkinagot If it is necessary in the prosecutf,on of the work to nterrup the natural drainage of the surface, or the flow of artifioial drains, the Contractor shall provide temporary drainage facili- ties that wt 1l prevent damage to public or private intereste, and shall restore f'.,u crigitial drains as soon as the work will permit, The Contractor sha?l be hold liable for all damages which may result from negljaot to provide for elthor natural or artificial, drainage which his work may have interrupted. 3. al~~i rcmentt After the site has boon cleared, the ground surface upon which embankments are to be constructed shall be soarified in furrows un9.formly spaced so that at least fifty (50) percent of the surface will be broken to a depth of at least four (4) inches, • Embankmento of suitable not b more d hana eight and (8) tainches in 102-1 • depth, loose measurement for the full width of the embankment and in such lengths as designated. Stumps, trees, rubbish, vegotnti.on or other unsuit- able materials shall not be placed in embankments, All construction traffic shall be uniformly distributed over the entire surface of each layer o! the embankment, A "Maintainer", or a "Blade Grader" weighing at least three (3) tons, with a blade at least ten (10) feet in length and dravm by a suitable crawlor-ty}.e tractor, shall be kept in operation on ~,ho embankment for the purpose of uniformly mixing, spreading, pulverizing, and consolidating the embankment material. After a layer of embankment material has been placed and bladed, it shall be sprinkled, if direoted, in the quantity as determined by the Engineer, anti rolled to compaction with a tamping roller, of approved type, drawn by a suitable crawler-type traotor. The roller shall pass over every part of eaoh layer for a minimum of six (6) timas. In the event water from the City Vater Mains is used, it shall be metered and paid for by the Contraotor. No successive layer shall be placed until the layer under construction has been thoroughly bladed anti rolled to the satiafaotion of t'io Engineer. • After a section of the embankment has been complotod, it shall be maintained to grade and cross-section by blading when and to the extent required. Embankments placed over and adjacent to pipes, culvorts, and other structures shall be of suitable materials, and shall be placed in suoeessive horizontal layers of not more than eight (8) incheo in depth, loose measurement, and each layer uniformly mixed, pu7verized and thoroughly compacted to the satiafaotion of the Engineer by the use of rakes, hand tamps, and/or other approved methods. Special care iihell be taken to prevent any wedging action against the struoture, This method of oonsoli. dation and compaction shall be used for such distances along embankment adjacent to st,ruotures as may be necessary and in other areas where blading and rolling would be impractical. 4. Embankment Containing, Rockr Whoro a large portion of the materials excavated consist of rook, the rock may be used in the construction of the embankment as hereinafter speoifiod. The maximum dimension of any rock used shall not exceed fifty (50) per cent of the hoi ht o£ the embankment and in no case shall any rook over twenty-four (24) inches in its maximum dimension be placed in the embankment. When the greater portion of the r,:,bankmont is to be composed of materials other than rock, the embankment sh;11 be oonstruoted as required in the proceeding paragraphs, and the ronk shall he carefully distributed through- out the embankment and filled around with earth or other approved fine material so that the interat',.oes between the large particles are filled and a dense, oompaot, uniform embankment is secured. 102-2 • When embankments are to be constructed principally of rock, the rock shad. be placed in successive horizontal layers, not to exceed thirty (30) • inches in depth, for the full width of the embankment and the interstices between the large stones filled, insofar as practioablo with small stones and spalls. The upper Sight (8) inches of all embankments shall be composed of earth or other acceptable material, C. Flexible hose Courses The Contractor shall oonst,ruot a flexible base 1 course for all roomy oonsisting of eithor Crushed Stone or pit-Run Ovavel. If Crushed Stone base course is used the depth shall be 611; if Pit-Run Gravel base course is placed the depth shall be 811. (1) Crus,_ hedstonj The materials shall be obtained from approved sourcost shall be crushed and shall consist of particles of stone mixed with approved binding material. The material shall be approved by the Engineer before being placed. The procooded material when properly slaked and tested by standard laboratory methods shall meet the following requiremontss • Retained on 2~inch screen 0% Retained on 1f4-inch screon 55 - 75% Material passing the ono-fourth (1/4) inch screen shall be known as • "Binder" and that portion of the binder passing the forty (40) mesh sieve shall be known as 11Voil Binder". Soil binder shall meet the following requirements The liquid 'limit shall not exceed 45 The pltist3,city index shall not exceed . . . . 15 The lincar shrinkage shall not excoed . 8,5%* (2) it-Run }ravel The materials shall be obtained from approved sources; shall consist of durable particles of gra,ie'l mixed with approved binding materialal and shall be free of thin or olongatod pieccs, lumps of clay, soil, loam or vegetable matter. The material shall be approved by the Engineer at the source. Materials containing gravo.l or conglomerate over two (2) inches in their largest dimension shall be broken up and uniformly mixed with the remainder of the material, The material, when properly slaked and tested by standard laboratory methods, shall moot the following ruquiromentei • Retained on 2-inch screen . . , , , , , , , , , 0% Retained on 1/2-inch screen . , , . , , . , , , 20 to 60% Retained on 1/4-inch screen . . , , , , , 40 to 75% Retained on 40 mesh sieve , . , . . , 60 to 85% • 102.3 The material passing the 40-mush sieve, "Soil Binder", shall meet the following requirementss The liquid limit shall not exceed , The plasticity index shall not exceed , . 12 The linear shrinkage shall not exceed , 7%* *;Note: The linear shrinkago shall be calculated from the volumetric shrinkage at the liquid limit. Should the Contractor elect to produce the opooified material from 10081 pits, the pits shall be opened up in such a manner as to immediately expose the vertical faces of all. the various strata of acceptable material, and unless otherwise directed, the material shall be excavated in successive vertical cuts extending through all of the exposed strata, D, Construotinp,~Dase Course: 1. ISre (ratio of ubgradas The area upon which the foundation; Bourse is to be p sel1 be exccavated$ or filled, as the case may be, an shaped to conform with the typical sections as shown on the plans and/or to the lines and grades established by the Engineer, All unstable and/or otherwise objectionable material shall be removed from the subgrade and replaced with approved material, All holes, ruts and depressions shall be filled with approved material, and, if required, the subgrade shall be sprinkled, reshaped, and oompanted to the extent directed in order to place the subgrade in an acceptable condition to receive the foundatl,on material, h satisfactory sixteen (16) foot straightedge and a template conforming to the typical section shown on the plans, and/or established by the Engineer, shall be furnished, maintained and operated by the Contraotor. In areas in which the use of the sixteen (16) foot straight- edge would prove impractical, adequate methods of chooking the subgrade may be substituted. The surface of the subgrade shall be finished to line and grade as established by the Engineer and in conformity wish typical sections shown on the plans, and any deviation in excess of one-half (1) inch above or below required grade as shown by template or straightedge, when placed as directed, shall. be corrected in an approved manner. Sufficient subgrade shall be prepared in advance to insure satisfactory prosecution of the work, Material excavated in the preparation of the subgrade shall be utilized in the construction of the parkways and itoon incidental to the construction of the Project as a whole, or disposed of as lirected. 2. Placing., Immediately before placing the foundation course material, the subgrade shall be chocked with straightedge and template as to conformity with grade and section and corrections made if necessary. The material shall be delivered in approved vo hiolos, and it shall be the responsibility of the Contractor that the required amount of acceptable material shall be delivered to the site. 102-4 ~Satorial placed upon the subgrade shall be spread and shaped the same day. In the ovent inclement weather or other unfornocn circumstances 0 cause the spreading and shaping of the material during the first twenty- four (24) hours after delivery to be impractical, the material shall be soarified, if neoessary, and spread as directed by tho Engineer. The material shall be sprinkled, if directed, and then bladed, drag pd, and shaped to conform to the typical sections shown on the plans and/or established by the Engineer. All areas and nests of segregated coarse or fine material shall be corrected or removed and replaced with wall graded material, If additional binder is considered necessary or desirable after the material is spread and shaped, it shall be furnished and applied in the amount directed by the Engineer, Such binder material shall be carefully and evenly incorporated with the material in place by appruved methods. The course shall then be sprinkled as required and rolled as directed until a uniform eompaetion is seoured. All irregularities, depressions, or weak spots which develop in the foundation course shall be corrected immediately by scarifying the arias affected, adding suitable material as required, reshaping and compacting by sprinkling and rolling. Compaction rolling shall be done with Tamping Rollers and/or Pneumatic Tire Rollers, as directed by the Engineer. Finish rolling shall be done with a three (3) wheeled, ten (10) ton Koller. 0 Tamping Rollers shall consist of two metal rollers, drums, or shells, of forty (40) inches minimum diamoter, each not loss than forty-two (42) inches in length and tinit mounted in a rigid frame in such manner that each roller may oscillate independently of the other, and each roller drum, or shell shall be surmounted by metal studs with tamping feet projecting not leas than seven (7) inches from the surface and spaced not less than six (d) inches nor more than ton (10) inches measured from center to conter in any direction; ay~,d the cross sectional area of each tamping foot, measured perpendicularly to the axis of the stud, shall be not less then fivo (5) nor more than eight (8) square inches. The tamping feet shall be rounded in shape, and the roller shall be supplomented with cleaning teeth to pro- vide self cleaning. The roller shall be so constructed that the load on eaoh tamping foot may be varied from one hundred twenty-five (125) pounds to one hundred seventy-fivo (175) pounds per square inch of cross sectional area, The load per tamping foot will be doterminod by dividing the total weight of the roller by the number of tamping foot in one row parallel to or approximatoly parallel to the axis of the roller. The tamping roller shall be drawn by a ouitable craarlor-type tractor, and the tractor and tamping roller conforming to the above proscribed requirements shall be considered as a tamping roller unit, Pneumatic tire rollers shall consist of not less than nine (9) pneumatic tired wheels running on two axlon in such a manner that the rear group of tires will not follow in the tracks of the forward group anti shall be mounted in a rigid frame li,:,i provided with a loading platform or body suitable for ballast loading. The front axle shall rotate around a king pin no located that the roller may be turned within a minimum circle. The r 102-5 • pneumatic tired ro.llor under working conditions shall, have an effective rolling width of approximately sixty (60) inches and shall give a minimum • compression of throe hundred and twenty-five (3'S) pounds par inch of width of tire tread. The pneumatic tired roller shall be drawn by either a suitable tractor or a trunk of adequate tractive offort and the roller, when drawn by either type of equipment, shall be considered a pneumatic tire roller unit. 'T'hree (3) wheel, ten (10) ton rollers shall be the self-propelled type, weighing not less than three hundred and twenty-five (325) poundH pail linear inch of tire width, The rear whools shall be flat and shawl have a diameter of not leas than forty-eight (45) inches and each shall have a tire width of not loss than twenty (20) inchoo, One roller unit of the typo required by the Engineer shall be provided for each 100 cubic yards, or fraction thereof, of material placed per hour. The quantity placed per hour shall be determined by averaging the total quantity of material placed in any one day. The use of weights, extra rollers, drums, tirevo or other equipment attached to a roller unit will not be considored as sufficient to reduce the number of roller units required on the project. When operations aro so isolated from one another that one roller unit cannot perform the required compaction satisfactorily additional roller units shall be provided and operated as directed by the Engineer. • Rolling shall start longitudinally at the sides and proceed toward the center ovorlapping on aucoossive trips by at least one-half (1/2) the width of thr pneumatic or tampin roller unit and one-half (1/2) the width of the • roar wheel, on tl,, throe (35 wheel, tan (10) ton roller. Thar rollers) unless otherwise directed, shall be operated at a nneed between two (2) and throo (3) miles per hour. In areas on which the use of a rol.lor unit would be impractical, other suitable meth.;ds of compaction may be used. Any deviation in excess of ono-fourth (1/4) inch as shown by straight- edge or tompl.ato on the finishad foundation course shall be corrected by loosening, adding or romovinf material, roshapinr and rocompaoting bly sprinkling and rolling. 3. Fine prar3inp, foundation Cottrtlo for Plarinp Pavemonti The foundation course shall be shaped to exact section and grade prior to placing pavement thoreon, Shaping shall be done by approved methods. Immodiately after being shaped for pavement, if required, a light course of sand shall be spread evor the top of the foundation cours3 for the pirpooe of correcting any irregularities that may develop during the shaping and to bring; the foundation course to a smooth even surface conforming to grade and section. • 0 102-6 • E. RaveMrlts All roadways and parking areas shall be paved with a 1i-" hot mix asphaltic conoreto pavement meet'.ng the requirements as to materials and construction methods of the Texas Highway Department Standard Speoifi- • cations Item 317 - Hot Mix Asphaltic Coiicrote Pavement (Typo "C"), F. Curb and utters: 1. Materials Materials and proportions for concrete used in construction under this item shall conform to the requirements as specified for 2500# concrete under "Concrete for Structures". Reinforoing steel shall conform to the requirements as specified under "Reinforcing Stet.+l.". Expansion joint filler shall bra prcmoulded material meeting the requirerrrents specified in the item "Conorete Struoturesr,. 2. Construction M.etha eis Outside forms shall be of wood or metal, straight, free o warp, and of a depth equal to the depth of the curb and gutter header, They shall be securely staked to line and grade, and main- tainod in a true position during the depositing of concrete. Inside forms, j if used, shall l-e of approved material, shall be of such design to provide' the curb require,l, and shall. be securely attached to the outside forms, A ter+plato, if used inatoad of the inside forms. shall be of u form approved by the Lnginoor. The reinforcing steel shall. W placed in position as shown on the • drawings. Care shall. be a%o rcisod to keep all steel in its proper location. Concrete shall be mixod as specified in the Item "Concrete for Structures", Expansion ,joi.nl material shall W trimmed flush with the • surface contour of the curb. After the concrete has been struck off and after it has booomo sufficiently net, the exposed surfaces shall. W thoroughly worked with a wooden float. llio exposed edges shall thon bo roundod by the tide of an edging tool to the radius indicated on the plane. Whon the concrete In the curb has become sufficiently sat, the inside curb form shall be care- fully removed and the surface thus exposed shall be pointed up whore necessary, then wotted and rubbed with a wood block to remove all form marks and ochor irregularttias, producing a finish similar in appearance to that previously finished. All curb and gutter finishing shall. be performed prior to initial sot of the concrete, rnd mortar surfacing will not be permitted. Aftor the conoratn has set sufficiently, the spaco back of the curb shall be backfillod with suitable material to the top of the curb and shr,pod until firm and solid, The curb and gutter paving and hoadors shall be finished in a satisfactory manner. 3. Joints One-half (1/2) inch promoulded expansion joints shall be placed, norma l,y, at thi.r,y-six (36) foot intervals through the curb and • gutter, and "flagging", normally at six (6) foot intervals, Ad,juatments may be necessary and shall 1~o no determined, in tiro field, by UP, rnginoor. 102.7 • All joints through the gutters shall be sealed with asphalt or other suitable sealing compounds. • One-half (1/2) inch premouldod expansion ,joint material shall be placed between curbs and abutting structures such as sidow0-ks, buildings, etc. Al). joints shall be constructed in a neat and workmanlike manner, with edges rounded, in conformity with plans and spooif:.cationo, and at locations as shown on the plans or designated by th9 r;lgineor. O. Si ewalkst 1. Mate_ rialet This item shall be as specified above under F, "Curb and Gutter, 2. Constryetionfat` hodsj The aubgrade shall be excavated six inches beyond the outside lines of the sidewalk, shaped to line, grade, and cross-section, and if considered necessary by the 2ngineer, tamped and aprinklod. The subgraao shall be moist at the time the concrete is placed. Forms shall. be wood or motal, free from warp, and of a depth equal. to the thi.ekns,s of the finished work, They shall be securely staked to line and grade and maintained in a true position during the placing of the concrete. Concrote shall be placed in the form; to the required depth • and thoroughly tamped. No mortar topping will be permitted. The top surface shall be floated with a wooden float to a gritty texture and to the required finished grado. • The walk shall be marked off one-eighth inch deep, at a spacing equal to the width of the walk, with a joint tool equal in width to the width of the edging tool. All edges shall be edged with a tool having a one- quarter inch radius. Premoulded oxpail,91on joint material shall be plaeaad where two lines of sidewalks intorsoct, at buildtngs, and at intervals of not more than thirty-si;; feat throughout the entire longth of the sidewalk, All expansion Joint material shall extend entirely through the sidewalk and shall extend the entire width or the sidewrilk, Sidowalks shall be err... tooted Prom traffic for a period of 48 hours after pouring. LNI) OF IMIM • • 102.8 i T . Not ~03 - CONCRI~'~T; F01? STRUCT R s5 A. tiont The requirements of thin item shall govern for all mater- ials used and for the storage, handling, measuring, proportioning and mixing or combining such materials in producing; a concrete for structures and incidental or miscellaneous construction. Concrete shall be composed of normal. Portland cement or High Early Strength Cement, mineral filler if required, coarse aggregate, fine aggre- gate and water proportioned and mixed as hereinafter provided in these specifications. Unless otherwi,9e sho;,iy on th-a plans or specifically stated in the Con- tract Documents, all concrete shal.1 be Class "A". Lsan concrete shall be Class V% "Central Plant", "Ready Mixed" and/or "Transit Mixed" oonerete may be permitted, but only after the Contractor has submitted to, and received the approval of the Engineor, suffioi-9nt evidenoe that the concrete to be furnished t,y rvoh method will meet all the requirements of these speoifi.- caticnsr Sr~aclrtl attention is called to Paragraph M, "Transit Mixed Concrete". B. t r a t 1. Cnm~,ntt Th.o cement shall bey Normal Cement or High Early Strength portlanP swum. Only one brand of ooment shall be used in any one strut- turo except by written permission of the Engineer, Vnion such permission is granted and more than one brand is used in one strueturo, the resulting concrete shall be uniform in color. Portland eomont shall moat the requirements of the currant Standard Speoifications foi Portland cemona of the A,S,T.M, Designation C 150, Typo I for Normal Portland Cement and Tyne ITT for Nigh Early Strength Portland Cement. All cement shall be sampled And tested in accordance with the current Standard Methuds of Sampling and Testing Portland Cement of the A,S.T,td, Designations C 183, C 1849 C 187, C 1888 C 189r C 190 and C 191. Cement shall be delivered in bags plainly marked with the brand and the name of the manufacturer. Bags shall contain ninety-fotnr (94) pounds of cement, net, and shall be in good jondition at the time of delivery. Bags of cement varying by five (5%,) per cent or more from the required weight may be rejectedi and if the average weight of bags in any shipment, as determined by weighing fifty (50) bags soleoted at random, varies by five (9%) per cent or more, the entire shipment may be rejected. • When a shipment of cement is received* the Engineer shall be notified in order that he may be present when the oar is opened and secure samples for testing. 103.1 2. Mixin_.__,. a Waters nttsso of injurious ~amoun oil,eacid, alkali, esalt, lorganic clean matter for other deleterious substances. Water suitable for drinking or for ordi,rary household use will be accepted for use without being tested, bo utAt When comparative tests are made with water of known satisfactory quality, any indication of unsoundness, marked change in the time of set, or reduction of more than five (5, ' 9) percent in mortar strength shall be sufficient cause for rejection of the water under test. 3. Coarse Ag g&A+e: Coarse aggregate shall consist of gravel or crushed stone meeting the following requirements: When tested by the "Standard Method of Test for Abrasion of Coarse Aggregate by the use of the Los Angeles Testing Machine", Method T-26, of the A.A.S A O., coarse aggregate shall have a percentage of wear of not more than forty (40). The maximum amount of deleterious substances shall not exceed the following percentage of weight: Material removed by decantation l O Shale, Slate or similar materials 1.0% Clay Lumps 0.25% Soft fragments 3.0j4) Other, including thin, friable, laminated or elongated pieces 3.0 The sum of all deleterious materials, exclusive of material removed by decantation, shall not exceed five (5%) per cent by weight. Coarse aggregate free lor as kadherent coatings. When tested by Standard Laboratory Methods, the coarse aggrogate shall conform to the following grading requiromentss Perosnt Retained c___n Soran Screen Class "A" Class "D" Class "C" Class "D" 1 1-1 2" 0 to 5 Onto 1-1411 5 0 to 5 1•• 3211 25 to 60 25 to 60 0 to 5 25 to 6o r 1/4" 95 to 100 95 to 100 95 to to 100 95 to 100 r 103-2 4, Fine A~areaatet i'ine aggregate shall consist of sand or a com- bination of sand and not more than fifty (50%) per cent stone screening. Fine aggregate shall conform to A.S.T.M. Specification O 33, except as modified hereinbelow. Sand shall be composed of olean, hard, durable, uncoated grains, and stone screenings shall be composed of clean, hard, durable, uncoated fragments resulting from crushing atone. Mineral filler meeting the requirements specified herein nmy be combined with the fine aggregate if ouch combination is necessary in order to meet the grading requirements for fine aggregate. The ma:cto= amount of deleterious substances shall not exceed the following peroent+;gee by weights MrAter:Lal removed by decantation 20% Clay lumps 0:5% Other deleterioue stibstanoee such as oval, shale, coated grains and soft flaky particles 2.096 Fine aggregate shall be free of an excess of salt or alkali and at the time of its use, shall be free of frozen material and bll foreign material which may have become mixed with the aggregates in the stock piles. Ihien tested in accordance with the Standard Method of Test for Organic Impurities in Sands for Concrete, A.S.T,ti. Designation C-40, the fine aggregate shall not show a color darker than the standard color. Whon the fine aggregate, to be used on the ,job, is mixed with High Early Strength Portland Cemen+. in the proportion of ono to three, the average tensile strength of not loss than throe standard mortar briquets shall be equal to or greater than the tensile strength of Ottawa sand mortar briquets of the same consistency when tested at the age of three days. When tested by Standard Laboratory Methods, the fine aggregates shall. be in conformity with the following grading requirements Retained on 3/8" screen Retained on 1/4" screen 0 to 5% Detained on 20 mesh screen 15 to 50% Retained on 100 mesh screen 05 to 100% 5. 1 1_.F,I 91-j Mineral fiiller shall consist of stone dust, clean o.•ushed shale, emshuo sand or approved inert material. Mineral filler'and line aggregatb mixer! •ii proportionn proposed for use in the work, when s-.*Jjeotsd to the color test fGr organic impurities (A.S.T.M. C-40) shall ,ot show a color daAer than the standard color. i 103..3 When tested by Standard Laboratory Methods, the mineral filler shall meet the following grading requirementss Retained on 20 mesh sieve 0% Retained on 30 mesh sieve 0 to 5% Retained on 100 mesh sieve 0 to 100% 6. dib.~Q'Qrlilitv~ The use of admixes to improve workability may be used if, in the opinion of the Engineer, they have no injurious effect upon the strength, density, or durability of the concrete, The material added may be either an air-entrAining agent such as Darex (Dewey and Almy Chemical Company), Sika Aer (Sika Chemical Company), Aero- lith (L. Sonneborn Sons, Inc.) or a dispersing agent suoh as Pozzolith (Master Builders Company), If admixes are used the quantity of material to be added shall be as recommended by the manufacturer or as determined by the Engineer to produce the desired results. Admires shall be added at the mixer. C. Storaae of .an~ari+. t Unless otherwise provided, all cement shall be stored in well ventilated, weatherproof buildings whioh will protect the cement from dampness, The floor supporting the cement shall clear the ground a Aufficient distance to prevent the absorption of moisture by the oement, provisions for storage shall be amplu in capacity, and the ship- ments shall be segregated in such a manner as to provide easy aocess for identifications and inspection of each shipment. The Engineer may permit, small, quantities of cement to be stored in the open for a short period of time (maximum 49 hours) if a rained storage platform and adequate i-raterproof covering are provided. No oement shall be used which has become lumped, caked, or hardened. D. Storage gf.Aggraggepi '"he handling and storage of aggregate to be used in making concrete shall be such as to prevent the admixture of foreign materials. If the aggregates are stored on the ground, the site of the stock piles shall be grubbed, cleared of all woods, grass and other vegetation, and levelled off so that the entire area will be properly drained, The entire area on which aggregate is to be stored shall be covered with wood or metal cheating. requires such or mariner sizes to £prevent intermixing. Materials in stock piles shall be handled and placed in such manner that segregation of materials within the pile will be avoided and each pile shall be built up in horizontal layers of not more than three (31) feet in depth, L. muffs meat o Ma ass anc Maas, +n Z~immWn+ ~ s All materials shall be measured separately and accurately and batches shall be uniform. The coares and fine aggregate shall be measured, or weighed, loose and separately. i 103-4 When volumetric proportioning is used, the Contractor shall furnish and use approved measuring boxes, pans or mechanical devices whioh will give the exact volumes of the aggregates required for the several classes of . oonorete involved, The devices used shall be so constructl3d and plainly marked that the Engineer can conveniently and aocuratoly check the exact quantity of each aggregate being used in any or all batches, A bag of cement as packed by the manufacturer and weighing ninety-four (94) pounds will be considered as one (1) cubic foot. When proportion by weight is used, the capacity of the weighing equipment shall be adequate to permit the required weighing of materials without de- laying the production of the mixer. Scales shall be of a type that permit the we!;hing of the separate ingredients without changing the goals settings, and unless the scale is of this type, separate scale units s) ll be furnifj.'Lod for each kind of material to be weighed. All soaleu shall b mounted upon a firm foundation and shall be kept level during use. Each scale installation shall be provided with standard, fifty t9st weights made of high quality cast iron, cast and finished in ouch manner that no foreign material will adhere to the surface and sealed in the manner presoribed by the United Staten Pureau of Standards. The minimum number of teat weights required nhall be of a weight equivalent to ton (l(Y°) per cent of the net load capacity of the scales to the nearest fifty (50) pounds but in no case shall less than tin (2) weights be furnished.. • The device used for msasuri.ng the quantity of water shall indicate the quantity in gallons and fraotions thereof. The operating mechanism shall andutheo suthe pplyinlet quantity shall required be out for ofany given batch f automatically withinwaterone (is)beingcent • discharged into the mixer, F, Fauitnnen , ~aintenap~t All equipment, tools, and machinery used in the performance of any part of the work shall. be maintained in condition to insure completion of the work under way without excasuive delays for repairs or replacements, The Contractor must obtain the gngineorss approval of all concrete mix- ing, handling, and transporting equipment before any commenced, Such approval will not relieve the Contrctp)ur of or of hiserosponsi- bility for providing adequate equipment to carry on eatisfaotoril.y the pro- ject operations, C' 1Z 1'ro___ ~r_... ti.~9.,ul Concrete shall be propcr~ionod as ap proved b the Engineer. The total volume of materials in thg concrete mixture concretess~hallbnol~be loss tthan hthe minimumnspeoifiea for that oclayard of concrete. so of The concrete shall be uniform and workable and the minimum cement con- tont,maximum water content, and the maximum slump for the various classes of mixes shall conform to the followings w 1.03-5 Mar.. Size of Max, 'later Maximum Min, Cement Coarse Agg, Gals. Per Slump lass aiks Per CY 1n 2 ba Nat Linchui Use • AA 6.0 1/2 6-1/2 It precast concrete items A 505 D 500 1 1-1/2 6-314 4 General C 4 General D 6.5 1-1/2 G-1//4 5 Thin ls 5 Handraails, F 3~0 l~l/2 F3 Foundation Seal 6 Fill, blocking The maximum amount of ooarso aggregate (dry 'loose volume) per cubic foot of finished concrete shall not exceed 0*82 cubic feet. The maximum amount of water as set forth in the table above is based on the assumption that the aggregates are in a saturated surface dry condition The concrete prix .rill be dosigned with the intention of producing con- orate which will have compressive or flexural strength equal. to or greater than the followings Compressive Stronrth Flexural Strength Class of 22mrlu nor So. n " - Winds ngx 99, Tn.I AA 2,500 3750 A 2,I")00 13 1. ?0() j l n0U 40U 500 • C 2 000 ?.x500 350 425 3,000 400 D 20000 3,ooo 'too 500 1,000 1,500 During the progress of the work, the Engineer will maintain a careful check of the quantity of cement used in each structural unit, and he rhall make adjustments in the mix designs to correct for any extensive variations from the theoretical quantity of oement required when such variations are attributable to the mix proportions. In calculating the theorat!o.:? ,ement content, allowance shall be made for all embedded stool,, and for all anels and chambers more than throe (3") inches in width. p li. CoWji3 tQ=i The amount of water per batch will be determined by the Engineer and shall be such as to produce a mixture containing the minimum amount of water consistent with the required workability. After being established, the water content may be varied only by the Engineer. Norm- ally, the oonsistonoy of oonoretn mixtures will conform to the followings 1 The mortar will cling to the coarse aggregato, ~2; The concrete will not segregato when transportod +.o the • place of depovit. (3) The concrete ,~+on dropped directly from the disoharge chute of the mixer will flatten out at they center, but the edges will stand up and now flow, • 103-6 (4) The mix will show no froe water at the time of discharge, (5) The oorncrote will settle into place when placed in the forms (G) Mien conveyed by metal chutes, at an angle of thirty degrees with the horizontal, the concrete will elide and not flow into place. In general, when the mix is ineorw istent with the above requiremonta, evbo though it conforms to the slump tests, the mix shall be correctively adjusted. In the event that, when using the maximum allowable amount of wester and the minimum amount of cement, the characteristics of the aggregates furn- ished are such that the slump and consistency requiremonts are nut met, the Contractor may provide aggregates of improved grading or the Engineer wi.11 modify the mix by adding cement and/or mineral filler as may be neoeseary. When mineral filler is used, the combined total quantity of mineral. filler and fine a negate passing the one hundred (100) mesh sieve shall not exceed twenty (2u) per cent of the weight of the fine aggregate. No additional compensation will be allowed the Contraotcr.for additional cement and/or mineral filler as required by this item. Slump tests will be made by the Engineer in accordance with the pro- cedurc as outlined by the current A.S.T.f4. 1lesignatj,on C-143. ~ I. 1. n r The proportions of materials entering into the mix, subject to limitation,9 already stated, to produce concrete of satisfactory quality shall he determined by laboratory tests prior to beginning of con- oreto plaoing. 2, Trial =i Prior to the placing of oonoreto, the Contractor shall submit to an Independent 'Posting Laboratory samples of the materials lie proposes to use. The Laboratory shall test the materials submitted and certify that they comply with these spooifications. After testing the materials, the laboratory shall design batches of the different clasni, fioations of concrete desired. Trial butches shall be run and six (G) confirmation cylinders, made of each batch, Three cylinders shall be broken at ? days and the remaining throe at 28 days. The corfirmation cylinders shall show a 28-day strength of fifteen per cent (19,A) higher than the stated minimum 28-day strength, Reports of material tests, design batches, i~nd confirmation cylinders shall bo given the ringineor before any concrete +.s }ilaoed. 'the laboratory expense of tooting oonoreto materials, trial, batches and confirmation cylinders shall be paid by the Contractor, 3„ Sr~z&Li MZ9s.s If, during the progress of the work, it is found impoosible to sccure concrete of required workability and strength with thr materials being furnished by the Contractor, the Engineer may order changes in proportions or materials, or both, necessary to secure the r desired properties, subject to limitations already stated. The Contractor i 103.? may not make changes in materials, either gradation, source, or brand, or proportions of mixtures after their having once bean approved except by specific approval of the Engineer. J. f_Xl1,ty of Concreta s 1. ELn t s (luring the progress of the work, the Engineer will cast test cylinders of the number he desires for testing to maintain a check on the compressive strength of the concrete actually being placed. The Con- tractor shall provide and maintain curing faoilition, ae required in A,S,T,M, Method of Making and Curing Concrete Compreesion and Flexure 'hest Specimen in the Field, Designation C-31, for the purpose of curing concrete test specimens. The cost of all materials and labor an required by the Enginear used in making test apeoimens and the cost of providing and maintaining curing facilities shall be included in the contract price. Moisture tests of both fine and coarse aggregate shall be made at sufficient intorvals to provide for accurate- batuhing and proportioning, Costs of making moisture tests will be paid by the Owner. Testing equipment including wheelbarros,- or buggy; shovel; r3lump cone and rodl plywood platform 3o inches square; twelvo steel cover plates (7" x 7" x 1/8"); and, hand trovol shall be furu - ished by Contractor and arranged in an orderly manner in a location conven- ient to the work before oommoncing any oonoreting operation. All testing equipment shall be maintained in a clean condition by the Contractor. 2, A- ,S,T#11. Standard liathods, test and speci- fications an applicable shall be adhered to and, complied with on sampling, ouring, and teatinp of concrete and for materials used thorain. 3. on_ jti 1 7.~StVn tr- h -Cp s rpto : ,lion, High Farly Strength Portland Cement is used in liou of normal Portland Cement, t'ce minimum alloi,ablo 213-day strength for norm1 Portland Cement shall be 3 days and 7 days in liou of 7 days and 28 days for normal Portland Camont► ~y. Arilure :n =t }teguirom to.s Should the strongths shown by testing specimens fall below the required values, the Engineor shall have the auth- ority to require additional curing on those portions of the structures represented by 'the test npooimenn. In the event that such additional cur- ing doca not give the strength required, the Engineer shall have the right to require strengthening or replacement of those portions of. the structure which failed to develop tho r^quircd strength. The additional ;wring and/ or replacement required by the Engineer, shall be done at the Contraotor's vxgonse, and teat cores shall be obtained and tested in accordance orith A, S.T.M. Methods of Securing, Propari.ng find Testing Specimons Prom Hardened Concrete for Compressive and Flexural Strengths, Desip;iation N43. R, min dit o s t 1, ganD",,s The concrote shall be mixed in quantitioa required for immediate use, and any concrete which is not in place within 30 minutes after being discharged from the mixer shall pot 1.+i used. Rotempr,ring of concrete will not bo pbrmitted. In threatening weather, 0iiah, in the lo3~f3 opinion of the Engineer may result in conditions that will. adM'9e1~' affect quality of the conorote to be placed, tFiu Engineer may order postponement; of the work. Whero work has been started and changes in weather oonditione require protective measures to be used, the Contractor shall furnish adequate shelter to protect the concrete against damage from rainfall or damage duo to freezing temperatures. In case it is necessary to continue mixing oper- ations during rainfall, the Contractor shall provide protective covering for concrete being placed. 2, CWd.Weathers No concrete shall be mixed without the approval of the Engineer when the air temperature is at or below 40 degrees Fahrenheit, (taken in the shade away from artificial heat) and falling, If authorizod by the Engineer, concrete may be mixed when the air temperature is at 35 degrees Fahrenheit and rising. When permission is given for mixing when the temperature is below 40 degrees Fahrenh it, all water used for mixing shall be heated to a temperature sufficient to raise the temperature of the concrete to 70 degrees Fahrenheit, but the temperature of the mixing water shall not exceed 165 degrees Fahrenheit at the time of entering the mixer. If heating the mixing water only will not raise the placing tomperaturc of the concrete to 70 degrees Fahrenheit then the aggregate must also be heated, either by stoam or by dry heat, to a temperature sufficient to raise the placing temperature of the concrete to the required temperature. In no case shall the aggregate temperature, as it enters tho mixer, oimosd 150 degrees Fahrenheit, The heating apparatus shall be ruch as to heat the mane of the aggregate uniformly and pracludo the oocurro;oe of hot spots which will burn the material. Temperatures of transported concrete shall. not be less than 60 degrees Fahrenheit at tho time of placing in the forma, Salta, chemicals, or other foreign materials shall not be mixed with the concrete for the purpose of prevontinr freozIng# In no case ehall the tomporature of the froth concrete oxoeod SO degreou Fahrenheit. 1'. F:. tLIJL'ti ~p-S It t rigl t The mixing shall be done in a batch mixer of approvod type and size which will insure the uniform distribution of the material throughout the mass so that the mixture will be uniform in color and emcoth in appearance, Tho minimum rated size of mixor permissible will be a 5 cubic foot batch mixer, which size may be used only on structures or units of structuren involving a maximum continuous placement of not over 1" cubic yards of concrete, A 10 cubic toot or larger batch mixer nhall be ucnd where continuous plaosmonts of 15 to 50 cubic yards of concrete are involved. For larger placements, a lip cubio foot batch mixer or larger shall be usad. The u,:r of more than one 5 cubic foot or 10 cubic foot batch mixer to produce ,,eaults equivalent to tho above requirements as to sizes of mi,ors will be perm,,tted. The absolute volume of the concrete batch shall not exceed 120% of the nominal capacity at the mixer, The continuous placement 4rhich govern the size of the mixers required shall be the placements between ,joints shown on the plans. After all the ingredients are assembled in the drum, the mixing shall continuo tot, a minimum time of one and ono-half minutes for fourteen cubic foot mixers and larger. During the mixing time, the drum shall revolve at i a ;,peed of fourteen to twonty revolutions per minute, The mixer shall. be equippod with a speed regulator to hold the mixer to its normal revolving speed of revolution;, 103-q • The entire contents of the drum shall be discharged before any mater- ials aro placed therein for the succeeding batch. 'Pho first batch of con- creto materials placed in the mixer for each placement shall contain an extra quantity of sand, oement, and water sufficient to coat the inside • surface of the drum without diminishing the mortar content of the mix, Upon the cessation of mixing for any considerable length of time, the mixer shall be thoroughly cleaned. The concrete mixer shall be equipped with an automatic timing devioe so constructed that it is put into operation when the skip is raised to its full height and dumping. This device shall aatisfaotorily look the dis- charging mechanism to prevent emptying of the mixer until all materials have been mixed together for the minimum tiro required, and it shall ring a bell after the specified time of mixing in the drum has elapsed. The water tank shall be arranged so that the amount of water can be accurately measured, and while the tank is disoharging, the inlet supply shall be automatically cut off. Whenever a conoroto mixor is not adequato or suitablo for the work it, shall be removed from the r0 to upon a written order From the Engineer and a suitable mixor provided by the Contractor, I'iok-up ar;,] throw-over blaOos in the drum of thy, mixor which aro work down more thall twenty-fivo 05'1 per cent in depth shall be repaired or replaced, by now blades. • Concrete improperly mixed shall nog. be placed in the structure. Hand mixing of concrete will be permitted only for small placements or in the case of an emergency, and thon only on the authorization of the Engineer. When hand mixing is permitted, it shall be done on a wator- tight platform. The fine aggregate and cement shall first be mixed until a uniform color is attained and then spread over the mixing board in a thin layor. The coarso aggregate shall be thoroughly satut,ated with water, and it shall then be spread over tho .fine agf,regato and cement in a uniform layer and the whole mass turned as the additional water is added. After all ingredients have been added, the m as shall be turned at least six times or more if necessary to make the mixture uniform in color and smooth in appearance, Hand mixed batches shall not r :ceod a two bag batch in volume. M. ~i~.1t,~ a o g~;s Transit mixed, central plant mixed and/or ready mixed concrete will be permitted in lieu of mixing on the ,job, pro- vided all of the following conditions are mots (1) All roquiremonts othorwioe specified for mixing on the job shall apply, including mixing equipment. i (7) The consistency of the concrete at the point of dolivery shall bn as npeoified and the conoroto shall be free from sogregation,, (3) Suffici.ont transit mix oquipment shall be assigned exclusively • to the project as required for continuous pours. The rate of delivery of • 103-10 • the mixed concrete shall be such that, the interval, between loads shall not exceed ten (10) minutes. Concrete shall be delivered to the site of the work and discharged from the mixer within a period of sixty (60) minutes after the mixing water has been plAoed in thn mixer with the dry materials, • (4) Satisfactory evidences shall be furnished that the delivery of concrete shall be continuous at regular and uniform intervals without stoppages or interruptions. (5) The 3ontrol of design, proportioning and mixing of all ready mix, transit mix o central plant concrete shall be under the supervision of a trained representative of an established independent testing laboratory, whi.oh laboratory has been approved by the Owner, The laboratory represen- tative shall work in cooperation with the Engineer and shall furnish to the L'ngiroer a summary of all tests which are performed and for each con- orete pour shall, furnish a certificate of compliance with the specification. No concrete shall be poured without the laboratory ropresentative being present Hither at the plant or at the project sito, All oast for the services of tho testing laboratory representative shall be borne by Lho supplier of the ooncroto (or by the Contraotor) and no direct paymont thore.for wi.1l be made by the Owner. For concrete potirs of ton cubic yards or lose, the Engineer may waive these requirements; howevor, in such event, evi.donro shall be furnished showing a design mix to moot the requirement of tho npecifications. • END OF ITEM • • 103-11 • ITEM NO. 104 CONCRETE _STRUcTUR1S A. Descriptions This item governs for tho construction of, foundations, • piers, walls, Blabs, columns, beams, girders, and all other structural elements involving the use of concrete. All concrete structures shall be constructed in accordance with the design requirements and details shown on the Plans; conforming to the pertinent provisions of the items for "Eartilwork", "Reiforcing Steel", "Concrete for Struotures", and other incidental items of the Specifications which are applicable to the com- pleted structures; and in conformity with the requirements herein, 13. Matalst 1, romeet All concrete shall conform to the provisions of the Item for Concrete for Struotures", The class of concrete for all atruoturee shall be 3000 lb. (Class A) unless otherwise shown on the Plans, 2. Mansion Joint Materials a, Pvomoldoc? Materials Premoldod expansion joint material shall be of non-oxtrn 1i.rrg Tina resilient type conforming to Standard Slaeoificatione for Preformed Expanaion Joint Tillers for Conorote, A,S,T,M. Designation D-544, as applicable for Type V fillers. • b. Hot-Poursd Joint Sealers Joint sealer shall be hot-poured asphalt-rubber compound applied in a workmanlike manner in accordance with manufaoturer's recommendations, It shall be Para.Plastia, or approved • equal, as manufaoturod '.,y the Servicived Products Corporation, 6051 W, 65th 1troet, Chicago 288 Illinois. 3. Non-S r n4 in 0rout Aggroates Non-shrinking grout aggrogato s hall 1xr vithor mbsoo' as manufactured by piaster Builders Company ors Forrolith "o", as manufactured by 1„ Sonnaborn Sans, Inc. 4. P_lastio Wato ate si 4lhere shown on the Plana, or as may be required by manner o oonstruotion, DURAJOIN'1 Wnt©rstops, or an approved equal, shall be embedded in the oonorote. the Contractor ahall supply and install Durajoint No, 3 unless shown on the plans otharwiuo, Dura,joint Waterstopa shall be extruded from elactomoric plastic matorialta and shall, fulfill tho following M quirementas at Material - The waterstop shall be fabricated from a plastic compound, the basic resin of which shall be polyvi.nylrhl.oride. The com- pound shall contain any additional resins, plastici.zurn, stabilizors or• other materials such that, when eompoundod, it shall moot the poriormanco ruquireirients given in this specificati.on# No roolaiiwrl PVC nor tiny PVC compound other than that specified herein shall be used, b. Tensile Strength - !dhen tested according to AST14 )>l I2.531 r (die IVI) the tensile strength of the material rhal.l bo not, loan than 2000 P3'3 (Std, Grade), • lo4.1 • c. Ultimate Elongation - When tested according to ASTM D412-51T We "C") the ultimate elongation of the material shall not be lose than 250%. • d. Low Temperature Brittleness - 4Ihen tested according to ASTM D746-55T the material shall show no sign of failure (cracking, chipping, eto.) at minus 0-deg. F. e, Stability in "Ef£eot of Alkalies" Test - When tested according to HEPC of Ontario, C-245.559 7(h), the material shall not show any dimensional changes in excess of one porcentl nor shall its weight increase by more than 0.40 percent at 90 days, Materials that exhibits n Do reams in weight in 30 days will be considered to have failed, f. Oeneral - Care shall be taken of the correct positioning of the Waterstops during installation. The center line of the Waterstop shall coincide with the joint oponing. By thorough working; of the concrete ensure that maximum density and imperviousness is obtained in the vicinity of all ,joints. Splices in the continuity or at interseiitions of runs of Water- stops shall be performed by fusing the adjacent waturstop usi.na a W+, device the Mootatiorv oontr l,le . 5. Ot r Mateialet All other materials, such as reinforcing steel and structural s eel, ;hall conform to th:j requirements of the pertinent • specifications under this Contract, C. Ucnoral Constiuction Itequiremcntst • 1, Prior A r ~t_px oval by 1;;n inoort Before starting work, the Contractor shall i.iifrr"i ttto l;n9tneor !'u .y as to the type of forms and methods of onn~',.ructi~~ri ho proponos to uso, and as to the amount and character of equipment tie proposes to use, the adequacy of which shall be subject to the approval of the Engineer, The Contt,actor ahnll submit a achodule showing the sequence of concrete pours, The primary considoration in the preparation of schedule shall be the pouring of alto rnate sections in long struoturaa to provide for shrinkage of concrete. This aoquence of pours, when approved, shall be strictly adhered to unleas otherwise alrthori?od by • • 104.1a the Engineer. Before constructing forms and fal.sework for concrete struc. tures, plars shall be submitted to the Engineer for review and approval. Concurrence on th.t part of the Engintiier in any proposed construction methodO, approval of forms and falsowork plan] shall not be coneidored as relieving the Contractor ofthe responsibility for the safety or correctness of his methods and adequaoy of his equipment, or from carrying out the work in full accordance with the Contract. 2. Timo uence of Operations: Unless otherwise provided, the following requiremente shall govern for the time sequence in which construc- tion operations shall be carried on. Steel beams or forms and falsework for superstructures shall not be erected on concrete substructures until the concrete in the subntruoture has cured at least four curing days. Concrete for concrete slab or girder spans or concrete slabs on steel beam spans shall not be placed until the substructure has cured at least seven oaring days, Steel trusses or plate girders to be erected from the ground on approved falsework may be erected when bhe substructure has cured four curing days, but the falsework shall not be rermoved until the substructure has cured at least seven ouring days. Forms 1'or wall- or columns shall, not be erected on concrete footings until the oonoreta in the lboting has ottred at least seven oaring days. Concrete may be placed in a Mall or aolumn an soon as the forms and reinforcing steel plaosmonts are approved. The use of oompleted portions of a ntruoturo as the site for mixing operations or for storage of materials will not be psrm,t+,iod until the particular portion of the structure has aged at least ten cur:,rJg days, A ouring day is defined in paragraph M, horeoff "Removal. of Forms and Falsework". In continued cold weather the oonstruotion operations mriy be authorized at the end of n period of calendar days equal to twice the number of curing days specified above. D ott trAttonne,t Exaavation for foundations and preparation of foundation surface shall be made in accordance with the requirements of the portinont specifications under this Contract. E. Draino.s Wasp hole drains shall be Installed in rotaining wallop in accordance with the details shown on the Plans. F, LmLns on Joints and lit yiMas 1, Qo oral tt td r.-.mLtgi Uxpansion joints and devices to provide for expansion and contraction shall be oenatruoted where and an indicated on the Plans, All joints constructed open, which are to be loft open or filled with poured ,joint, material, shall be constructed uning forms adaptable to loosening or early removal, in order to avoid jamming such forms by tim expansion action of the concrete and the consequent likelihood of injury to the adjacent oonoretep these forms shall be removed or loosened as soon as practicable after the concrete bas attained its final sot. A provision for loosening the forms to permit free expansion of the conareto without the necessity for full removal itt preferred. 4 • 104.2 • 2, Workmanship: Premoldod mnterials, whorovor used, shall be anchored to the concrete on one aide of the joint by moans of copper wiry not lighter than No, 12 B & 5 gaugo. Such anchorage shall be suffiaient to preclude tho tendency of the matorial to fall out of the ,joint. Careful workmanship shall be exercised in the construction of all Joints to insure that the concrete sections are completely separated by an open joint, or by the joint materials, and to insure that the Joints will be true to the outline indicat- ed. Immediately after the removal of forms, and again where necessary after surface finishing, all projecting concrete shall be removed along tho exposed edges of premoldod materials in order to secure full effectiveness of the expansion joint. Whore roofing felt or premoldod materials are specified for horizontal ,joints, the matorial shall, if practicable, extend two Inches beyondtho form for the top member, The pro,jooting portions shall be sub•• sequontly trimmed to the face of the member after the forms are removed, 0. Co_nstruotion Jointst I 1, 91=1L ftoauirementsi The joint formrd by placing plastic conorote in dirsot contact with concrete that has attained its initial sot si;all be deemed a oonatruotion ,joint. When concrete in a structure or a portion of a structure is speuifiod to be placed monolithically, the term monolitirio shall be interpreted to mean that the manner and sequence of concrete placing shall be such that construction joints will not ooour, Construction ,joints • shall be of the type and spacing shown on the Plans, Additional joints will not be permitted without written authorization from the Engineer, Any additional construction joints shall have details equivalent to those shown on the Plans for ,jointa in similar locations. • 2, C'rtion of l,'xitatin Conor tol Before oinin to oonorota that has alro dy aettj the urfaoo of the concrete Inoplaan2~~~to shall bo roasonably rough with some oggrogate partio,los oxposad; shall be freo from all looso materialo, laitanae, dirt, or foreign mat,tnr; shall be washed and corubbed clean with stiff brooms and thoroughly drenched with water until saturated; and ahall be kept wet until the plastic oonoroto has been placed, The method of preparing tho surface of hardened oonavote to expose a clean surface of sound concrete shall be determined by tho Contractor subjeot to approval of thr, Engineer, Immediately prior to the placing of additional concrete on horizontal surfaces, all forms rhall be drawn tight against the oonoroto in place, and the surface of tho nunorote in place shall bo flushed with a coating; of mortar about two in-,hee thick. An application of mortar should be applied on vertical surfaoet, if possible, This mortar shall be worked into the irregularities of the hard surface if ponsiblo, and should have the same sand and cement content and water. cement, ratio as the concrete being, placed. In lieu of this method of pro- viding exooss mortar for ooating, the Engineer may require that the Con. tractor provide cxoosa mortar by leaving out one-half of the gravel in oonoroto for first layer at the JAM, If shown on the Plans, oc,nstruction Joints shall be provided with oonorota keyways, reinforcing ntoel dowels • w • and/or metal water stops, The method of forming keys for keyed joints shall be such as to permit the easy removal of forms without ohipping, breaking, or damaging the concrete in any mannor. All keyway forms must be oiled before installation. Special attention shall be given to the construction of keyed joints so that they will be neatly constructed of thoroughly oompaoted conorete, fr a of excess water and laitanoe and uniform in every respect. 3, D-Joint De Qtr al yd Foo 1 „j,5 H$ ~ i The Con- tvaoter shall take all necessary steps to insure watertight structures. Attention is called to the fact that the plans do not specify a water stop at the oonstruction joint between the footing and walls, however, the Contractor may, at his expense, install a PVC water stop at Chia location. Just prior to placing +,he concrete for the walls the entire wall bearing area, including the keyways, shall be thoroughly cleaned and washed. The first horizontal three (3") inches of the walls shall be poured with grout. Orout shall be of the same proportions as specified for oonarc;se, except minus the ooaree aggre ate (Sand to cement ratio shall remain the same as for Class "A" oonorete~, H. Alseworki • 1. ( @ral Reou. aWl All falsowork shall be designed and oon„ strutted no that no excessive settlement or deformation will oaour, and so that the necessary rigidity will be provided. Da tails of falsework • construction shall be sub,jeot to review and approval by the ]engineer in accordance with the proviaions of Section C, "Oenoral Construction ]requirements", of this item, 2, 2jsigrr_Loadsr ]'"er oaloulating tho loads of falsowork, a weight of 1% pounds per cubic foot shall be assumed for ooneroto, and a live load allowanoo of 50 pounds per square foot of horizontal surfaoe of the form work avall be included. The maximum unit stresses shall not exceed 121i per o,ont of the allowable stresses used by the Lnginoor for the design u.£ the structures. 3. I All timber used in falsowork centering shall, be sound, in good oondit cn, and fret from defects which will impair its strength. Steel members shall be of adequate strength and of such chaps as to be suitable for the purpose intended. Timber piling may be of any species of wood which will withstand driving satisfuotorily and which will adequately support the superimposed load. 4, WorkmgrghjQI Where sills or timber grilloges are used to sup-sort falsework columns, such sills and grillages, unless founded on solid rook, shale or other hard materials, shall be placed in excavated pits and back- filled to prevent the softening of the supporting material by drip from the • 104»4 • forms or by rains that may occur during the construction process. Sills or grillage4 o,all be of ample sire to support the superimposed load without settlement. F'alsework which oannot be, founded on a satisfactory spread footing shall be supported or, piling which shall be driven to a bearing oapaeity sufficient to support the superimposed load without settlement, In general, each falsework bent shall bo capped transversely at the proper elevation by a cap of adequate size. If desired by the Contractor, however, a short cap section forming a T-hoad may be substituted at the top of each pile or column in the bent and shall be set at the propor elevation to produce, in conjunction with the use of approved hardwood wedges or jacks, permanent camber indicated on the Plane or speoificd, plus a construction camber covering allowanoe for deformation of the forma rind falsework. The use of wedges to compensate for incorrectly out bearing surfaces will be permitted{ however, wedges shall be used in pairs and shall be so arranged as to insure uniform bearing. Each falsework bent shall be securely braced to adjacent bents by bracing material of ample size to provide the stiffness required. The bracing shall be securely spiked or bolted to each pile or oolumn it may cross. d X. Format 10 General ReauirementUl Forms shall be built mortar-tight and of material sufficient in strength to prevent bulging between supports. They shall be set and maintained to the lines designated until the concrete is sufficiently hardened to permit form removal. During the elapsed time between the building of the forms and the placing of the concrete, the forms shall be maintained in a manner to eliminate warping and shrhking. Details • of form construction should reoeivo approval of the Enginoor before form ereotion to eliminate possible delays in pouring, since permission to plaou concrete will not be given until all form work is completed to his satis- faction. 'If at any stage of the work the forms show signs o1' bulging or sagging, that portion of the concrete causing such condition shall be immediately romoved, if' necossary, and the forms shall bo reset and securely braced against further movement. Norm or form lumber to bo re-used shall be maintained clean and in good condition as to aoouraoy, shape, a trength, rigidity, tightness, and smoothness of surface. Any lumber which is split, warped, bulgod, marred, or has defects that may produoo work inferior to that resulting from using now material ahal). not bo roUnod, All forma shall bo so oonntructed as to permit removal without damage to the oonorete. Partiou- lar and special care must be exercised in framing forme for oopings, offsets, railing, and all ornamental work, so that there will bo no damage to or marring of the conorete when the forms are removed. If desired by the Contractor, the forms may be given a slight draft to permit ease of removal, Whenever practicable, forms shall be erected oomplete before the reinforcement is placed, For narrow walls and other locations where access to the bottom of the forma is not otherwise readily attainable, adequate clean-out openings shall be provided. At the time of placing conorete, the forma shall be clean and entirely free from all ohi.ps, dirt, sawdust, and other extraneous matter. • Forma for slab, beam and girdor construction shall not have tie wire cuttings, nails, matches, or any other matte- whatsoever which would mar the appearance • 104-5 • of the finished conutruotion, All forms shall be alOtned to the satisfaction of the Engineer, • 2. DQQ1& Londss Forms shall be designed fortbe pressure exerted by a liquid weighing 150 pounds per cubic foot, The rate of placing the oonorete, temperature of oonorete, and whether concrete is vibrated or not shall be taken into consideration in determining the depth of the equivalent liquid. An additional live load of 50 pounds per square foot shall be allowed on horizontal surfaces, The maximum unit stresses shall not exceed 125 per cent of the allowable stresses used for the design of structures, 3. Mgtgrlia , At gene 2M Lumber: Lumber for forms shall be properly seasoned and of good quality. It shall be free from loose or unsound knots, knot holes, twists, shakes, deoay, and other imperfections which would affect its strength or impair the finished surface of the concrete. The lumk*)r used for facing or sheathing shall be surfaced on at least one side and two edges, and shall be sized to uniform thiotaiess. The use of nominal two-inch lumber as a minimum thickness will be required for forms for the bottoms of all superstructure girders except that in case of special forming of girders, as for curved bottom girders where facing boards are transverse to beam, the Engineer may permit the use of one-inoh lumber. Lumber of nominal one-inch thickness will be permitted for general use on other portions of the structure if backed by a sufficient number of studs and wales, b. L in i Timber forms for exposed concrete surfaces which are • to be given a rubbed fini.ph, shall be faoelined with an approved type of form lining material, If plywood is used for form lining, it shall be made with waterproof adhosivo, shall have a minimum thickness of one- fourth inoh, and preferably shall be oiled at the mill and then rooilad or lacquered on the job before using. If fiber board is used it shall be tempered Masonito Concrete Dorm Proeswood, having a mi:,ir+um thickness of three-sixteenths inch and shall be thoroughly wet with w:ktor at least 12 hours before using, The water shall be applied to the screen side of the board and the boards shall be staoked screen lido to screen side. The smooth hard face shall be used as the contact surface of the form, If desired by the Contractor, facing for such surfaces may be constructed of thres- fourths inch thick plywood made with waterproof adhesive backed by adequate etude and wales, keeping in mind that for greatest strength the outer plies should be at right angles to the studding, and in this case, form lining will not be required. Edges and faces of adjacent panels shall be carefully aligned and the joints between panels shall be filled with patahing plaster or gold water putty to prevent leakage, and sanded lightly with No. 0 sandpaper to make the joints smooth. • 104-G • e."noial Form Lumber= • (1) Molding specified for ohamfor strips or other ucoti shall be made of redwood, cypress, or pine materials of suoh grade that will not split when mailed and which can be maintained to a truo line without warping. The molding shall be mill out and dressed on all faces. Unless otherwise provided, forms shall be filleted at all sharp corners, bosh inside and outside, and edges with triangular ol,amfer strips. The stripe shall be three-fourths inch, measured on the sides. All ohamfor strips shall be thoroughly oiled before installation on forms, (2) Forms for railings and ornamental work shall be constructed to standards equivalent to first class mill work. All moldings,panel work and bevel utripa sho l be straig%t and true with neatly mitered joints and of such design that the finished work shall be true, sharp, and olean-out. 4. Form Tien: Metal form ties of a type approved by the Engineer shall be used to hold forms in lace, otype especially designed. for use in aonneotiorhitheconcret bwork,aand they shall have provision to permit ease of removal of the metal as hereinaftor specified. The use of wire form ties will not be permitted except by approval of tho rngiileer. All metal appliances used inside of the forms to hold them in correct alignment shall be removed to a depth of at least • five-eighths of an inch from the surface of the concrete and shall be so constructed that metal may be removed without unduoin,jury to the surface from chipping or spalling, Such devices, when removed, shall leave a smooth opening in the concrete surfaoe not largor than sevon-eightha inch in diameter. Burning off of rods, bolts, or ties will not be pormitted. Metal ties shall be held in place by devices attached to wales, Each dovico shall be capable of dovelopine; the strength of the tic, Pipo spreaders will not be permitted Metal and wooden sproaders which are separated from the forms shall be wired to top cfform and shall be entirely removed ac the concrete is being plaood. Whern wire ties are permitted, all wiros shall be out back at least one inch from the face of the concrete with a sharp chisel or nippers. The use of metal form tins of a type that are moaned in paper or other material to Allow the removal of the complete tie, leaving a hole through the concrete structure, will not be permittod in the oonstruotion o.f water bearing wallo, 5• 1 The facing of all forms shall be treated with a su table form nil before concrete is placed. In hot weather, both sides of the fooo forms may be required to be treated with oil to prevent warping and to secure tight ,points, The oil shall he applied before the reinforcement is planed. The oil used for this purpose shall be a light clear oil which will not discolor or otherwise injuriously affect tho con- creto surface or delay or impair oaring operations, T.n goneral, all surfaces of forms which will oome in contact with the conoroto shall be wottod immediately before the concrete is placed. • • lay+-7 • b, J1tarme; The foregoing specifications for "Forms" as regards design, mortar-tightnoss, fillotod oornors, beveled projections, bracing alignment, removal, re-use, oiling, and wetting shall apply equally to metal forms, The metal used for forms shall be of such thickness that the forms will remain true to shape, All bolt and rivet heads on the facing sides shall be countersunk. Clamps, pins, or other connecting devices shall be designed to hold the forme rigidly together and to allow removal without injury to the concrete, Metal forms which do not present a smooth burface or line up properly shall not be used. Special care shall be exercised to keep metal free from east, grease, or other foreign material such ns will tend to discolor the concrete. Rfully and accurately 4 placed and rigidly nsuconcrete otrQotures pported an providedsin~the~ carefully "Reinforcing Steel. K, Plaointt Conch 1. Ceneral Reouiremr,nlel a, Prgliminar:v Considerations: The Contractor shall notify the Engineer upon completion of various portions of the work required for placing concrete so that inspection may be made as early as is practicable, The Contractor shall also keep the Engineer informed regarding his antici- pated oonorete placing schedule. When all items have been found to be in order by the Engineer, including lines and grades, forms, reinforcing, inserts, piping, electrical, plumbing and the Contractor's concreting materials and equipment, the Engineer will then authorize the Contraotor in writing to prooeed, Concrete placed without such authority will not be accepted unless by written exemption from the Engineer. Unless author- Sod by the Engineer, no concrete shall be placed in any unit prior to the o omplotion of the form work and the placement of the reinforooment. No concrete shall be placed before the completion of all adjacent operations which might prove detrimental to the oonorete. Whenever it is necessary to continuo the mixing, placing, and finishing of concrete after the day. light hours, the site of the work shall be brilliantly lighted so that all operations are plainly visible. In general, however, concrete placing shall, be so regulated as to permit finishing operations to be oompletcd in the daylight hours. The Engineer reserve the right to order postpone. ment of the plnoi,ng operations when, in his opinion, impending weather conditions may roault in rainfall or low temperatures which will impair the quality of the finished work, In case rainfall, should occur after placing operations are started, the Contractor shall provide ample covering to protect the work, In case of drop in temperature, the provisions sot forth in paragraph K-2, horeof, "placing Concrete in Cold Weather" shall be applied. The sequence of placing concrete shall to as provided for in Section C, horeof, "General Construction Requirements". The operation of depositing and compacting the concrete shall be conducted so as to :form a 4 40 104-8 i compact, douse, impervious mass of uniform texture which shall show smooth faces on all surfaces. The placing shall be Be regulated that the prasourou caused by the plastic concrete shall not oxceod the loads used in the design of forms. b, 11aandlina anq Tranonortaton, Chutes, troughs, or pipes used as aids in placing concrete shall be arranged and used so that the ingredients of the concrete will not be separated and they shall be metal or metal-lined. When steep slopos are nooessary, the chutes shall be equipped with baffle 'joards or be made in short lengths that roverso the direction of movement. Open troughs and chutes shall extend, if nooessary, down inside the forms or through holes loft in the forms, and the ends of such chutes shall torminate in vortionl downspouts, All chutes, troughs, and pipao shall be kept clean and free from ooatinge of hardened concrete by a thorough flushing with water before an,] after placement. Water used for flushing shall be dis- charged clear of the concrete in place, The use of chutes in excess of 35 foot total length for conveying aonorete will not be permitted except by specific authorization from the Engineer* Non-agitating trucks shall be used only when authorized by the Engineer with duo consideration of the length of haul, roughness of roads, and shape of truck bodies proposed, Pumping of oonoreto will be permitted, subject to approval of shipment by the Engineer, The placing of oonorete for floor slabs preferably shall be done from a mixing plant located off the structure. If the mixer plant is to be located on the structuro, it shall not be placed on a section of the slab which has been in plaae for a length of time less than that specified in paragraph C-2f "General Construction Requirements", of this Item. Carting or wheeling concrete batches on a completed concrete floor slab will not • be permitted until the slab hos aged at least four curing days. Unless pneumatic tired oarts are used, the carts shall be whoolod on timber planking so that the loads and impact will, be distributed over the alab, Curing operations shall not be interrupted ror the purl)ose of wheeling oc,.oroto over finished slabs, Stockpiling of ooncrste aggregate or uement on floors will be permitted only when authorized by the Engineer, The storing of reinforcing or structural bbeel on completed slabs shall generally be avoided, and when permitted, c,iah storage shall bo limited to quantiti,ts and distribution as authorized by the Engineer. o. Pw,2Liji 1 The mothod and manner of placing shall be such ou to avoid the possibility Lf sogrcgotion or separation of the aggregate or the displacement of the reinforcement. In thin walls, drop chutes of rubber or metal shall, be used, The spattering of forms or reinforcement bars shall be prevented if the concrete so spattered will dry or garden before k.ng incorporated in the mass. Each part of the forms shall be filled by depositing concrete directly as near its final position as possible. The coarse aggregate shall be worked back from the face and the oonoreto forced under and around the r i 104-9 e reinforcement bars without dimplaoing them. Depositing large quantities at one point in the forme and running or working it nlong the forms will not be allowod, After the concrete has taken initial set, the forms will • not be jarred, or any strain placed on projecting, reinforcement, Where the Contractor's operations involve the placing of concrete from above, that is, directly into an excavated area or through the completed forms, particularly in the case of walls, piers, columns, and similar structures, all eonorote so placed shall be deposited through vertical drop chutes of rubber or metal of satisfactory size. Drop chutes shall be made in sections or provided in :several lengths so that the outlet may be adjusted to proper height during placing operations. Conorcte shall not be dropped free more than five (51) feet, Concrete shall be placed in continuous horizontal layers approximately 12 inches in thioknoss. Each layer shall be soft when a new layer is placed upon it, and unless otz.erwise bpocified herein or by the Engineer, not more than one hour shall elapse between thv placing of successive :layers of concrete in Any portion of the otruoturea included in continuous placement. The C)ntraotor should avoid additional con- struction joints other than those shown on the Plann b'y placing required portions of piers, walls, or superstructuras in one continuous operation. Foreign matter of any kind shall not be permitted to aocumulate inside the forms, and openings in forms necessary for removal. of same shall be pro- vided. If excessive bloeding causes water to form on the surface of the concrete in tall forms the mix shall be made stiffer to reduce the blocdiiig. M In tall walls the ^.onerete shall be placed to a point about a foot below the top of the wall, or the bottom of any slab or beam to be poured monolithically with the wall, and at least one hours or more if specified by the Engineer, shall be allowed for settling. Concreting should then be resumed before • act occurs to avoid the requirements of a ,joint. If the slab is thin, a reduction of coarse aggregate size may be required, and the form shall be overfillod and the excess conoreto sereedad off after partial stiffoning6 d. Consolidation: Each layer of concrete shall be well compacted and the mortar flushed to the surface of the forms by continuous working; wish concrete spading implements andmmechanical vibrators of an approved type. Vibrators of the type which operate by attachment to forms will bo permitted only when immersion type vibrators cannot be used due to inaeceaL. bility. All vibrators shall nporato at 3poeds of not ).(,,so than 7000 rovolu. tions per minute, The vibrators shall be applAo d to the concrete immediately after deposit and shall be moved throughout the mass, through the layer of concrete just placed, and several inches into tho plastic layer below, thoroughly working the concrete around the reinforcement, embedded fixtures, and into the corners and angles of the forms until the concrete is thoroughly compacted. Mechanical vibrators shall not be operated so that they will penetrate or disturb layers placed previously which have become partially set or hardened, and they shall not be used to aid the flow of concrete laterally. The vibration shall be of sufficient duration to aocomplish thorough compaction and complete embedment of reinforcement and fixturos, but shall not be done to an extent thr,; will cause segregation. 104..10 • Vibrators shall be kept constantly moving in the oonarete and shall be applied vertically at points uniformly spaced not farther apart than the . radius over which the vibrator is visibly effective. The vibrator shall not be held in one location longer than is required to produce a liquified appearanoe on the surface. A sufficient number of vibrators (powered pneumatically or electrically) shall be used to provide one for each ten cubic yards of concrete per hoer being placed, At least one vibrator which may be of the gasoline powered type shall be immediately available for regular service or standby service for each two vibrators in service. All vibrators intended for regular service or standby service will be checked and operataa prior to the beginning of the concreting operations. Vibration shall be supplemented by hand spading if necessary to insure the flushing of mortar to the surface of a'!,l forms. e. g.g Std Before placing concrote, care shall be taken to determine that all embedded items are firmly and securely fastened in place as indicated In the drawings or required by the Engineer. All em- bedded items shall be thoroughly clean and free of oil and other foreign material, Anchor bolts shall be set to exact locations l!7 the use of suitable anchor bolt sleeves, or as otherwise shown on the Pans. 2. a in CopuQj2_,ip CQId Weathh r: No concrete shall be placed when the atmospheric -temperature is at or below 40 degrees F. (taken in the shade away from artificial heat) unless permission to do so is given in writing by the Engineer. When such permission is given, or in cases where the temperature drops below 40 degrees F, after the concreting opera- tions have been started, the Contractor shall furnish suffioi,;nt canvas • and framework or other type of housing to enclose and protect the structure in such a way that the air around the forms and fresh concrete can be kept at a temperature not 13se than 50 degrees F, for a period of five days after the concrete is placed for normal concrete, and for three days for high. early-strength concrete. Sufficient boating apparatus such as stoves, oalamnndera, or steam equipment and fuel to furnish all required heat shall be rjupplied. The treatment of mixing water and aggrogsitoo used in mixing., concrete shall be as specified in "Concrete for Structuros", It is under- stood that the Contractor is responsible for the protection of ooncretc placed under any and all weather conditions. Permission given by the I1,ngineer to place concrete during, freezing weather will in no way rolieve the Contractor of, the responsibility for satisfactory results. Should con- crete placed unnder such conditions prove unsatisfactory, it shall be removed and replaced, 3. Faoinn, Concrete In W_ ~,t~ Concrete shall be deposited in water only when specified on the Plans or with the pormissi,on of the Engineer, The forms, cofferdams, or caissons shall be sufficiently tight to prevent any water current passing through the space in which the conoroto is being deposited, pumping will not be permitted while the concrete is being placed, nor un it it has set for at least 36 hours. The concrete • • 104-11 • shall be carefully placed in a compact mass by means of a tremie, closed bottom dumping bucket, or other approved method that does not permit the concrete to fall through the water without adequate protection. The con- crete shall not. be disturbed after boiug deposited, Dopobiting shall be regulated to maintain approximately horizontal surfaoea at all times. When a tremie is used, it shall consist of a tube having a d'ameter of not more than ten inches, constructed in sections having watertight connections, The means of supporting the tremie shall permit the movement of the dis- charge end over the entire top surface of the work and shall permit the tremie to be rapidly lowered when necessary to choke off or retard the flow. The number of times it is necessary to shift the location of the tremie, for rany continuous placement of concrete, shall be held to a minimum. During tho placing of conorete, the tremie tube shall be kept full to the bottom of the hopper. When a batch is dumped into the hopper, the tremie shall be sligh+ly raised, but not out of the concrete at the bottom, until the batch discharges to the level of the bottom of the hopper. The flow shall then be stopped by lowering the tremie, The placing operations shall be oontinuous until the work is completed. When concrete is placed by means of a bottom-dump bucket, the bucket shall have a eapacity of not loss than one-half cubic yard. The bucket shall be lowered gradually and carefully until it rests upon the concrete already placed. It shall then be raised very slowly during the discharge travel; the intent being to maintain, as nearly as possible, still water at the point of discharge and to avoid • agitating the mixture. NI& 4. Pl o n Conan o S1 " Concrete :ln columns, walls, and deep boome or girders shall be a llowod to atand for- at least one hour, or more • if specified by the Engineer, to per;,yit full nettlemont due to consolidation before concrete is placed in the slabs they arn. to support, Haunches are considered as part of the slab and shall be placed intogrally with thom. The surfaces and material over which a slab placed on the ground is to be poured in strips, the widths of the strips, unless otherwise specifi.od or shown, shall be such t,at the concrete in any one strip will not be allowod to lie in place for more than one hour beforo the adjr,cont A ri;,s are placed. Immediately before placing concrete, the cushion to roooivo concrete shall. be dampened to prevent too rapid absorption of moisture from the conorete. Concrete shall, be of comparatively dry consistency and Mull. receive the finish hereinafter speoified. 5. P_la inn Conora occ in r oun IoM; Concrete shall not be placed in footings until the depth and character of the foundation has been inspected by the xj'ngineer and permission has been given to proceed. The placing of concrete bases above coal ooursos will be permitted after the forma are free from water and the oval course cleaned. Any necessary pumping or bailing during the concreting operations shall be done from a suitable sump looated outside the forms. Concrete in deep foundations shall be placed in a manner that will avoid separation of the aggregates or dis- placement of the reinforcement. Suitable chutes or vertical pipes shall • • 104-12 t be provided. When footingn can be placed in dry foundation pits without use of cofferdams or caissons, forms may be omitted, if desired by the Contractor and approved by the Engineer, and the entire excavation filled R' with concrete to the elevation of the top of footing. Where this procedure is followed, no measurement for payment for "Extra Concrete" will be made for concrete placed outside of the footing dimensions shown on the Plans. L. Curing Concretes: 1. General Reau remnntg: Careful attention shall be given to `,he proper curing of all concrete in structures. Curing methods shall be of the following types and shall be applicable under the indicated conditions$ A. Membrane Curinv: Membrane curing may be used on surfaces not to r6oeive a rubbed finish, vertical or sloped surfaces on which additional concrete is not to be directly applied, and surfaces after receiving first rubbing with No. 16 oarborundum stone. b. Cotton Mat Curing: Cotton mat curing shall be used and membrane curing is prohibited on surfaces to receive first rubbing with No. 16 oarborundw,n stone; surfaces to be painted or to which bituminous waterproof- ing is to be applied, and contact areas of construction ,joints. c. Co- tton that ar__Water~yoofod i'aner Curings Cotton mat or water. proofed paper during shall be used and membrane curing is prohibited on slabs on which additional concrete, mortar, or torrazo or other flooring is to be directly applied and on slabs which will receive liquid conoreto floor hardener. d. Qotton Mgt or waterproofed Paper-or17embrane Curings Slabs on which additional oonorete, mortar, or terrazo is not to be directly applied may be cured by use of cotton mats, waterproofed paper, or by membrnno curing{, except that ooU un mat curing may be required on floor slabs of buildings and basins where wcathor conditions are such that rapid lone of moisture would ronult by using membrane curing. 2. Lent of Curim_Porio s All concrete shall be cured for a ported of noven P,onsecutive days. In cold weather, when curing may be retarded, this period shall be extended as directed by the Engineer. 3. Ma, torial „gam U_ _sages a. CotIgn matAs Cotton mats shall uniformly contain at least three-fourths of a pound of ootton filler per square yard of mat, shall have covering cloth weighing not less than six ounces per square yard, shall be of convenient size for handling, and shall have 6-inch wide peripheral flaps for overlaps, The mats shall be in contact with the entire concrete surface and shall be kept moist for the specified curing period. 104-13 • be Waterproofed Paper: Waterproofed paper for nuring slabs shall be non-staining and strong enough to withstand the wine, and abrasive action of workmen walking over it. The type and quality of th9 paper shall be subject to the Engineer's approval. Cemented joints shall be lapped at least six inches and overlaps of blankets shall, be at least 12 inches and shall be securely weighed to form a closed j)ir:t. Holes torn in the blankets while in use shall be patched immediately, at:u in locations where pedestrian traffic is unavoidable, suitable walkways shall be provided to protect the paper. e, Membrane Curi m Compounds Membrane ouring compound shall be a resin base with light red tint with fugitive dye, ready for use other than stirring, and of such composition that it will remain intact as a sealing coat for 28 days. An acceptable compound shall have such sealing qualities that the moisture loss from test specimens shall not be more than three and one-half (3-1/2%) per cent when tested in ancordance with Method of Test for Water Retention Efficiency of Methods for Curing Concrete A.S.T.M. Designation C-1560 when the sealing compound is applied at a coverage of one hundred and fifty square feet per gallon. The sealing compound shall be sprayed on, using pressure-tank type spraying equipment, and the sealing compound shall be thoroughly mixed just before and during application by either a power-operated mechanical stirrer or compressed air to the satisfaction of the Engineer. Curing oo.npound shall be strained 0 through gasoline strainer as it is poured into spraying equipment. Applica- tion of the seal coat shall be on a moist surface, shall be uniform as indicated by the color, and shall be at the rate of one gallon per 150 square feet, applied in one coat on horizontal Nurfaoes as chocked by area 0 of surface and amount of material used. On vertical surfaces ouriri; compound shall be applied uniformly in two coats at the rate of 300 square feet per gallon. The application of the curing compound shall follow immediately after removal of forms and preparation of concrete surface as specified, Within thirty minutes after form removal on any surface to be cured by membrane, patching shall be commenced or the surface nhall be kept wot by sprinklin% until patching is commenced. Curing compound shall be applied immediately after any patch is made unless other, curing is provided. Opal coats shall. remain in place and be protected againat abrasive action for a period of 28 days if in an area whore 14-day curing; is required and 14 days if in an area whero 7-day ourlr4; is required. Seal coats on slabs shall be protected by a one-inch layer of sand or earth or by other approved means. The protective ooating shall not be placed sooner than 24 hours after the seal coat has botn Applied. Any damages to the membrane eouting within the period of time noted above shall be repaired immediately by a liberal application of the compound, M. itor~oval o F: xa and Falsoworkt Except as hereinafter provided, forms for surfaces required to be rubbed shall be removed when the concrete is placed. Forms shall be removed from surfaces requiring a rubbed finish only as rapidly as tho rubbing operation can progress, in order to permit w more rapid and more satisfactory rubbing while the surface is moist and • ]04.14 • relatively soft. Forms and falsework for the portions of structures which do not require a rubbed surface finish may be remover) when the concrete has aged for the minimum number of curing days set forth in the following A tablet Forms and falsework under slabs, beams or girders 7 days Forms and falsework under beams of frame bents 7 days Forms for walls, columns and sides of piers 2 days The term "curing-day" will be interpreted as any calendar day on which the temperature is above 504 F., for at least 19 hours. Colder days may be counted if satisfactory provision is made to maintain the air temperature adjacent to the oonoreto constantly above 50° F., throughout the entire day. In continued cold weather, when artificial heat is not provided, the Engineer may permit the removal of forms and £alsewor' the end of a period of calendar days equal to twice the number of UL.Ang days stated in the above table. Test speoimens may be made at the option of the Fngineor for the purpose of determining, a Natisfactory time for form and falsework removal in cold weather, and when tests made on specimens cured under like conditions to the curing of tho structure indicate that strengths equivalent to the 7-day strengths as given in Item, "Concrete for Structures" have been attained, the forms and falsework may be removed. In no event shall this removal be done in loss time than the curing periods given in the table • above, Forms for the portions of nlabs that cantilever more than one foot beyond the outside beams shall not be removed in less than four curing days. N. Defective- Workt Any defective work discovered after the forms have been • removed shall be repaired immediately. If the surface of the concrete is bulged, uneven, or shows excess honeycombing, or form marks, which defects, in the opinion of the Engineer, cannot be repaired satisfactorily, the entire section shall be removed and replaced. In repairing honeycombed aroas, all loose material shall be removed before the repair work is started, b. I+lanol~lthic Slab FinLah' All floor slabs, platforms, and other upper surfaces, except qs specifiod on the drawings, shall be finished mono- lithically, 51abt;, gonerally,shall be level., Where drains occur, slabo shall be sloped one (1") inch to drain within a radius of five (59 foot or shall be pi.tchod thereto no indieatorl on the Plans, Surceds shall be- soL accurately prior to placing concrete and shall be sufficiently rigid to withstand the impact of the concrete while being placed or finished. Excess material in forms shall be struck off with template or screed, working the coarse aggregate below thn mortar surface. The use of mortar tapping will not be permitted. After concrete has been struck off, the surface shall be thoroughly worked and floated with a wooden, canvas or cork float. After floating and before the finish has act, all surfaces, except side!aalks so finished and surfaces to be trowel finished, shall be lightly stippled with a fine brush to remove tho surface cement film, leaving a fine-grained sanded texture, Where a trowelled floor finish is indicated on the Plane, the concrete shall be tamped thoroughly to force the coarse • 104-15 • rggregate away from the sttrfaoe, which shall then be floated and trowelled with a steel trowel, to a true hard surface. Stair treads shall bo given a wood float finish. No "dusting" of floor surfaces with dry materials will • be permitted. Edges at all expansion joints shall, be rounded with a suitable jointing or edging tool. A liquid floor hardener shall be used if indicated on the drawings and shall be"1upi.dolith", manufactured by L. Sonneborn and Sons, used after concrete has been finished, and shall be applied in three applications in stri.ot accordance with manufacturer's apeoifi.cations, P. Finishimt All concrete shall be finished as specified hereinafter. All patching, repairing, finishing, and cleaning shall follow immediately after the removal of forms. Q. Filline Tie Ho lent After the tie rods are broken back or removed, the holes shall be filled solid with cement mortar, similar to that used in concrete. The mortar shall be as dry as possible and carefully packed into the holes in small quantities, After the holes are completely filled, all excess mortar shall be struck off Flush and the surface finished in such a manner as to render the filled hole as inconspicuous as possible. If those patches appear to be darker than the other surface of the concrete, white cement shall be used in the mortar as required. R. P to ohinwr Slight honeycomb and minor defects in all concrete surfaces • shall be patched with cement mortar mixed in the same proportions of cement and fine aggregate as the original concrete. finished surfaoes containing sand streaks or voids will riot be aoeeptable, and shall not be plastered over, Such defeotivo concrete shall be repaired by cutting out the unsatis.. • factory material and replacing it with dry pack mortar which shall be securely keyed and bonded to the old concrete and finished in such a manner as to render the jointing as inconspicuous as possible. This concrete shall be ;Tier than the regular mixture and shall be thoroughly tamped into place. Areas in hydraulic structures in which honeyoomc ooeurs suffioient to cause leakage through the conoroto, shall have all. loose and unoeroonted material thoroughly removed until sound concrete is exposed and the rocess shall be shaped to key the now concrete in plaao, Enah dofooti.vo aroa shall be out bank with pneumatic chipping tool a:t deep au the dof'oct extends and in no case less than one inch. The holes shall then be slushed with neat cement slush anri worked into ',he surface with ;Miff brush and thon filled to within threo-fourths inch of tho surface with approved non-shrink mortar as directed by the Engineer and the remainder of the hole filled with regular dry pack mortar, The surface of such patches shall then bo finished as above specified. All dry pack mortar shall be driven into place with suitable hammer and wooden blooks. All patches which will be continuously exposed to water shall. be made with non-shrinking grout in accordance with "Concrete for Structures", of these specifications. Non-shrinking grout will not be used where it would be subject to observation, S. Rub-Fi.nishedd Exposed Surfaoost Tho following exposed vortical concrete • 104-16 surfaces shall Ix. given a rubbed finisht a. The exposed surfaces of all outside walls to a point two (21) feet below the final ground line, b. The inside walls of the Darminutor vault, c. The inside walls and ceilings of the Raw Sewage Pump Station dry well and the Return Sludge Pump Station dry volt. d. The inside walls and ceiling of the Primary Sludge Pump Station, including, exposed wall surfaces of the exterior stairwell. e. The inside walls of Return Sludge Pump Station wet well. P. The inside vial!. surfaces of all basins and manholes to two (29 feet below minimum water level. g. The top and inside walls of the sludge drying ?rods to the top of the rock layer, h. The entire ew±.~£ace of all basin influent and effluent channels, i. The inside Mall and ceiling of the Digester Control House, J. All pump bases, concrete valve and pipo supports and other miscellaneous oxpos:jd ooncrete surfaces. The tubbio(,! operation shall be in accordance with t.hc following pro- visions: A=, Koon as forms are removed, all necessary pointing shall be done. When tho I.vjinti.ng has sot a+.ifficiently to permU it, all ourfaces requiring surface finish shall be wot with a brush and given a first surfaco rubbing; with a No. 16 carborundum stone or an abrasive of equal quality, Tho rate of removal of forms shall be determined by the rate of the completed rubbing. Tho rubbing shall be continued sufficiently to bring the surface to a paste, to remove all form marks and projections, rind to produco a smooth denso sEirface without pits or irregularities. The use of cement to form a surfaro_p~asic,vrill nntmitted. The maborlnl. 00oh hay boon ground to a pasto in this process shill bo carefully sproacl or brushed uniformly over the surface and allowed to tako a reset. In general, chamfored corners shall not be rubbed in the first surface rubbing, During the process of conditioning the eor.pleted structure for final acceptance, the ourfaces of the entire structure requiring finish shall be cleaned froo from drip marks and discolorations and shall be given a :final finisli rubbing with a No. 30 carborundum stone or an abrasive of equal quality. On completion of this rubbing, the surface shall be neatly stripped with a brush and the mortar on the surface shall h- allowed to take a rosot. The surface shall then be washed clown with jloan water. The ontire structuro shall be left with a clean, neat and un..Ho rrr. uppoaring finish and shal1 be uniform in color. T. Rough , inisht All. oonorote for whioh no special finish is indicated or requiired eb_Tl have all tied removed and all holes filled an specified 1011-17 • in paragraph "filling Tie Holes", and all defects repaired as specified in paragraph "Patching" above. All fins and rough (,d,;os shall be removed. • U. G outin t 1. Mixt re t The following mixtures, proportioned by weight as specified, shall 14 used for grouting oporations: a. LaL ettin Now 1jculpmeutt Where olearancr, is one inch or lose in thickness' Oue part portland cement One part oiean, sharp sand One part non-shrinking grout aggregate Not more than 5-1/2 gallons of water per sack of cement Where clearance is one inch or over in thiokness: One part partland cement Vine part cloan, sharp sand One and ono-half parts of 1/4" pea gravel One part non-shrinking grout aggregate Not more than 6 gallons of water per sack of cement • b. Dry_E&olc Mortara Dry pack iortar shall be made with appro- priate cement and agg.^ogato thoroughly mixed and then fretted by light sprinkling while mixing continues. Only enough water shall be added so that when the mixture is compressed i,n the hand, a cohesive mans will be • produced. All dry pack mortar must be driven firmly into place with hammer and wooden blocks, e. Ot_ IM: Grout used for G;oneral purposes stall be a mixture of one part of portland cement and two part3 of sand. Uncre the space to be grouted is loss thrin one inch thick, act duo to inacoosaibility it is fin- posni.blc to tamp the grout, a moro flu7.d consiotency in required And a I to 1 rn-lx shall. 13,E a W. !n grouting largo pipe in pl.•tco and siniLlnr work whor!i the, Space to be ;'fi fled with grout 18 lari o, the cono rote zni: turo used in tPo original concrott) jhould beusod. The stiffer tho mixture at ti.mc of pla,:ing, tho less sh,..nkat;c; therefore, tamped grout, and grout produced by prolonged or delayed mixing will be used where posni.bl,o. 2. Pro d re t The tops of all foundation,-, to receive grout shall be froo from laitanoe and n11 loose particles. All bolt holes shall be blown out. Any grease, -U, om• organic matter which may be on the surface shall be romovoc., and if romoval proves impossible such oontwninatod concrete shall be chipped away until clean concrete surface in o:<posed, Chipping concrete in order to obtain a firmer bond with the grout shall be required only when specified elupwhsre in those ;peoifioations, or specifically ordered by the Engineer. Before applying grout, grout forms shall be set • 104.18 • true, level, tight and well braced. The forms shall be caulked, anchored, and braced to prevent leakage and movement of the grout. Equipment to be • grouted in place shall be assembled before grouting. Base plates and othor items to be embedded in grout shall be clean and free from any deleterious matter. Items to be grouted shall be set in final position, true to accurate line and level. All shims used for setting, other than steel shims, shall be removed from the grout after the grout has fully set; extrome care shall be exercised to prevent the disturbance of the items grouted in place. Grout destroyed in order to remove shims shall be replaced with like material to the satisfaction of the Engineer. The area to receive grout shall first be saturated with water. Puddles of water shalt. be removed from the prepared slab. A mixture of neat cement mortar shall be applied as a slush coat with a stiff brush, scrubbing into edges and sides of the concrete foundation and on the sides and bottom of the base plate or item to be set. The grout mixture shall be turned over, while still dry, enough times to insure the even distribution of aggregate tend cement, and then enough clean water shall be added +.o ,hake the mixture plaoeableo Caution shall be observed in all oases to avoid An excess of water. Grout shall be well rodded in place, the entire area being evenly filled, well tamped, and all voids and holes filled. Where clearance is over three inches, the forms shall be half filled, the grout well tamped into sides and under base plates and edges, and then the balance of the form filled. The grout shall be worked and rodded continuously while it is being placed, with particular care being taken to got the mixture firmly packed beneath bed plates. Grout containing non-shrinking grout aggregate shall be out off vertically below the outside edge of the base r equipment or base plate and normal cement mortar used to cover the edge of the grout • The Contractor shall wood-float the exposed grouted area and when the grout has ent sufficiently, the surface shall be given a steel trowelling. In general, exposed areap shall be sloped away from a machine base carefully to avoid a featheedge grout. After about three to six hours at normal drying, temperature, when the finished surface cannot be dented with thumb- nail proseure, the surface shall be wet down and covered with damp sawdust, sand,heavy paper, or ourinh compound to protect the cxpoaed area from drying out too rapidly. Items ombodded in grout shat.]. riot be subjected to strobe, nor shall machinery be placed in operation until 36 hours at normal drying temperature has been allowed for tho full setting of the Strout unless specifically dircoted othorwi.o by the hngineer. END O ITEM • 101E-19 • z72_ __3_uo, Ia , - riLxl,roltgi qsnm A. bescri t}ont This Item contains detail specifications for furnishing, reinforcing steel of the type, size and quantity designed for use in structures as shown on the Plans and in accordance with these require- ments. D. Materialss All bar reinforcement shall be open hearth new billet steel of intermediato grade concrete reinforcement bars, If steel other than American manufactured is proposed, the Contractor will be required to have tests conducted to show compliance with these specifications. These tests shall be made by an independent laboratory selected by the Owner, and the expense shall be paid by this Contractor New billet steel shall conform to the roquirementn of the latest Standard ooification for Dillot-Stool Concrete hainforcement 2nrsy A. .T.hi. Designation A_15. Unless otherwise shown on the Plans, all reinforcing; bars shall be deformed bars, and shall conform to the requirements of the latest issue of the Tentative Spec ifioations for Minimum Requirements fox, the • Deformation of Deforri,od Steel Bars for Concrete Reinforcement, A.S.T.M. Deaignation A-305. Wire for fabric reinforcement shall be cold-drawn from rods hot rolled from open hearth billets, Wire shall conform to the requirements of the latest Standard Specification for Drawn Wire for Concrete Rein- forcement, A.S.T.M. Designation A-82. The nominal size and ea:ea and the theoretical weight of reinforcing steel bars covered by this speeificntion are as follows; t3-,r Dosig cation Nominal Diameter Nowinal Area Woighl, ---.,.._Liwtdum, ai. , t, q . lnchctIL uarc Inchc, , Per l.in_ .E Q. 2 .210 .049 .167 3 .375 .110 .376 4 000 .196 668 5 .625 750 .307 1.043 1.502 0 875 ,601 2,044 1.000 .785 9 1.128 1,000 2,670 10 1.270 1.266 43,400 .343 11 1.410 1.563 5.313 • i t.o5-1 • When wire is ordered by gauge numbers, the following relation between number and diameter, in inches, shall apply; Equivalent Equivalent Gauge No. Diameter Gauge No. Diameter Inches Inches 0 0.3065 8 0.1620 1 .2830 9 .1483 2 .2625 1.0 .1350 4 .2453 11 .1205 .2070 12 •1055 5 5 .1020 13 .0915 7 .1770 14 40800 C. Reinforcing steel Sehe ulest Prior to the delivery of any rain. forcing to the site -`f the projects the Contractor shall submit to the Engineer complete schedules for all reinforcing steel to be used in the work, showing the location, number of bars, longth and bending diagrams for all bars. The submission of suoh schedules shall not relieve the Contractor from furnishing all of the reinforcement required for the construction and completion of the project in full accordance with the requirements of the contract documents. D. Bent The reinforcement shall be bent cold to shapes indicated on the Plans. All bending of hard grade and rail-stool bars shall be done in the shop. Bending of other grades shall preferably be done in the shop. Bends shall be true to the shapes indicated, and irregularities in bending shall be cause for rejection. t Unless otherwise showt. on the flans, binds for stirrups and ties shall be made around a pin having a diameter of not less than two (2) timoo the minimum thickness of the bars, 1 . St~orin : Stool reinforcement shall bo stored above the surface of the ground upon platforms, o kids, or other aupports and shall be pro- tectod as far as practicable from mechanical injury and surface deter- ioration caused by exposure to conditions producing, rust. When phased in the work, it shall bu free from dirt, scale, dust, paint, oil, or other foreign material. 1+`, S licest 1. Lan Snlieos! No splicing of bars, except s,hon shown on the Plans, will bepormitted without the written approval of the Engineer. Approval of bar bending schedules or of planing drawings will constitute written approval. Splices which are permitted shall have a longth of not leas than 30 times the diameter of the reinfornement, but not less than 12 inohes, except in the case of welded spliv,9a$ and shall be well distributed or oleo located at points of low tensile stress. The clear • 105.9 • distance between bare shall, apply to the clear distance between a con. tact splice and adjacent contact splices or bars. The bars shall be rightly elsrtped or wired at all. splices in a manner approved by the Engineer. Sheets of wire mesh or fabric shall overlap each other sufficiently to maintain a uniform strength and shall be securely fastened at the ends and edges, 2. vlAlded Sp~ie83! Where shown on the Plans or required by the provisions of this item or other pertinent specifications, welded bar splices shall be used. In general, such splices shall be so located that not more than two bars in any twelvo..inch width of the member shall be spliced at any one point. Bars to be welded shall be placed side by side and a fillet weld rr.ade on each side for the full length of the splice. C. Plate= Steel reinforcement shall be placed in the exact position as shown on the Plans and held securely in place during the placing of the concrete. The minimum clear distance between bars shall be two times the bar diameter. Vertical. stirrups shall always pass around the main tension mumbo rs and be securely attached thereto. Tile rein- forcing stool in all concrete walls shall be spaced its proper distance from the face of the forms, as shown on the drawings, by means of • approved galvanized metal spacers or approved precast mortar or con- crete blocks, Unless provision for welding is made, all reinforcing steal shall be wired together at all intersections. Before any concrete is placed, all mortar blocks to be used for holding steel in position adjacent to formed surfaces shall be cast in individual. molds meeting the approval of the Engineer and shall, be cured by covering with wot burlap until aged sufficiently to be removed from the molds, at which time the blocks shall be immersed in wator for the remainder of at, least, a four-day ouring, period. The blocks shall preferably ib cast with the side,; bevrled -nd in such mariner teat the size of the block increases away from tho area to be placed against the forms. Blocks in the form of a frustum of a cone or pyramid are preferred. A sultabl.a tie wire shall I,)-i provided in each block, such wLre to be used for anchoring the block to the stool in order to avoid displacement in placing tho concrete. Except; in unusual cases, and when specifically otherwise authorized by the Engineer, the size of the surface to be placed adjacent to the forms shall not exceed two and one.,half (2_1/2") inches square ur the equivalent thereof in cases whore circular or rectangular areas are provided. Blocks shall be accurately cast to the thickness required, and the surface to be placed adjacent to the forms shall be a true plane free of surface imperfections. No concrete shall be deposited until the F;ngineer has :inspected the placing of the reinforcing metal and given permission to place concrete. Exposed rein- forcing intended for bonding with future extensions shall be offective'ly protected from corrosion, A END OF ITEM 0 T,TEM NO. 106 - MSTAL FOIL STp CTURES A Generals This item covers all metals used in structures. Unless other. wise speoified, these metals shall conform to applicable specifications of 0 the American Society for Teoting Materials. When not covered by the above named speoifioations or by these specifications, metals meeting the require- ments of some reeognizod and generally acoopted specification and of standard commercial quality may be furnishes' subject to the approval of the Engineer. Standard specifications of A.S.T.M, referred to above shall be the latest standard or tentative standard specifications issued by the Society prior to receipt of bide. Be §Jr_uot!j S.o~t All structural steel shall conform to the requirements of the Standard Specifications for Structural Steel for Bridges and Buildings, A.,.T,M. Designation A-?$ and supplemented by the followings 1. Rolled material shall be free from cracks, flaws, injurious seams, laps, blisters, ragged and imperfect edges, and other defects. It shall have a smooth, uniform finish, and shall be straightened in the mill before shipment. 2, Material shall be free from loose mill soale, rust pits, or other defects affecting its strength and durability. 3• If steel other than American manufactured is proposed, the Contractor • will be required to have tests conducted to show oomplianoe with these speoi- fications. These twos shall be made by an independent laboratory selected by the Owner and the expense shall be paid by this Contractor. • C, Sheet Msira1 B j" : Sheet metal shall conform to Standard Specifications for Light Gage Structural Quality Flat Rolled Carbon Steel A,S.T.M, Desig_ nation A-245 or A-246i or, Standard Specifications for Hot-Rolled Strip of Structural Quality A.S,T,M. Designation A-3031 of grade specified by the Engineer. D. 281XVizina: Galvanizing of metal, other than sheet metal, shall conform to the requirements of the Standard Speoifl.eations for Gino (IIot Galvanized) Coatings on Structural Steel Shapes, Plates, and Bars And their products, A,S.T,M. Designation A-123. Articles fabricated from structural shapes, plates, and sheet metal to be galvanized after fabrication shall be galvanized in aocordano6 with A.S,T-M. Specifications Designation A-1236 E. Shogj Metal Gal.yan3.7.aA~ Galvanized sheets shall conform to the require. ments of Standard Specifications for Gino-Coated (Galvanized 'Trot, or Steel Sheeta, A.S,T,M, Designation A-93, or Zinc-Coated (Galvanized) Wrought Iron Sheets A.S,T,M, Deaignation A-163, F. LQg,W I Copper furnished under theso specifications shall be free from flaws or ;urfaoe imperfections and shall be manufactured from commercially pure, soft popper bare and shall he fully ductile and of soft temper conform- ing to Standard Specification for Copper Sheet Strip and Plats, A,S,T.Ii. Designation B-152, G, ,Wt Lead shoots shall be uniform in thioktiess, free from surface impor- i factions, and shall be manufactured from commercially pure, virgin pig lead, 106.1 ~ r H. Who t-I ont Vf,; ught-iron shall conform to the requirements of the Standard Specifications for Refined Iron Bars, Wro+tpht-iron Plates or Welded Wrought-Iron Pipe, A.S.T.M. Designations A-41, A-42, and A-72, respectively, Transverse ductility of wrought-iron plates shall not be lose than 3 per cent nor more than g per cent. It ho e.Rlnes and.Coversl Manhole rings and covers shall be as detailed and indicated on the Plans. Where not specifically called for on the Plans, ring and rover shall weigh approximately 300 pounds and be Trinity Valley Pattern No. 672, or approved equal. J, i?anifclq_ 5t9bgt Steps shall be similar, and equal, to Trinity Valley Manhole Stop No. 100. K. U dderss Ladders shall 1„ provided where shorn on the plans. Railing shall he standard im ight 1-1/2-inch wrought iron pipe with flush ,joints. Rungs shall be one (111) inch wrought iron. Ladders shall be as detailed on the Plans. Painting shall be as specified in these Specifications. L. pjp a 1 t Pipe handrails shall be located au shorn on the Plans and shall be fabricated of 1-1/2-inoh standard weight wrought iron pipe with all. Joints of the flush type. Members shall be neatly coped and con- tinuously welded at all junctions of posts and rails, The members shall be no assembled that the poste will be perfectly plumb, longitudinal members and all intersections thereof lying in the same plane, in any section or run of railing. Uprights shall, to fastened to side of walkways by means of anchor bolts. Painting shall be as specified in these Specifications. M. Subway Orates Subway grating shall be furnished at the locations shown on the Plarts. Types, bar sizes, and spacing shall be as noted. Grating shall be as manufactured by Irving Subway Grating Co., or an approved equal. Painting shall be as specified. EN17 Or ITEM • 106-2 • T m No ,107. g ,Ei TRuC_, L a A, Cener}11-1 This item ouvors the fabrication and ()"action of structural • steel and other metals, which are used for steel structures or metal portions of structures except for those metal. structures covered by other specification items, f3. I_i erLgk: The metal used for the various portions of the structures: shall be as speoified tinder '7lotal for Structuius" of these specifications. C I,,;gbr'e : Fabrication, tsnloss othorwrivo stipulated in these spooi- ficationso shall cor;form to AT SC Spsoifiration for the Design, fabrication, and Erection of Structural Steel for grti"ld,ings, latest revision. Shop drawings shall be furnished as provided for under `,ipocial Provisions", D. Welding: All welding operations, processor, equipment, materials, workmanship, and qualifications shall conform to the "°quirements of the Coda for Are and Gas Welding in Building Const ntot,iv ~f the American Welding Society. After oleaning, and within 24 hours after depositing, welds shall ba spot paIntid with a paint conforming to pertinent provi- sions of the painting specif?oationa. Qualifications of welders will be required, The Engineer r:il?, supervise the qualification tests as pre- scribed in the American Welding ,ooiety Standard Qualification Procedure • for the type of work required. The expense of the qualification tests shall be borne by the Contractor. E. Unlo ss otherwise provided, the shop print and appli- cation shall conform to the rcgltirements of AISC Starnde.W Spooifioationao Metal protective paint shall be Pittsburgh No, UC-30002 lead chromate or Pittsburgh No. UC-32200 zinc chromate. F. treetiom, 11 AM1_j_ l Sta Erection, unless otherwise stipulated in those specifications, shall oonform to RISC Specification for the Design, Fabrication, and Erection of Structural. Steel for Buildings, latest revision. 2, &_tj2ZU-and. u, jtt Before starting work, the Contractor shall, inform the Engineer fully as to the method of erection he proposes to follow and as to the amount and character of the equipment he proposes to use, the adequacy of which shall be subject to the approval, of the Engineer. The approval of tho Engineer Shall not be considered an relieving the Con- tractor of the responsibility for the nafoty or adequacy of his methods or equipment or from carrying, out the riork in full accordance rrl.th the plans and npooifications. No work shall. be dono i4thout thy: oanction of the Engineer. The Contractor shall nrovide the fal.coc+ork and all. tools, machinery, and appliances Sec()scary for the expeditious handling of the work. 10~-1 • 3. 5tor na_MLte iala: All materials shall be handled in such manner so that no injury will result. Material to be stored shall be placed on skids above the ground and shall be kept clean and properly drained. r Girders and beams shall 'oe placed upright and shored, Long members, such as columns and chords, ahal,l be supported on skids placed near enough together to prevent injury from deflection, 41 F'n„~owork: The falsework shall be properly designed for the loads to be supported and shall be substantially constructed and maintained. The Contractor shall prepare and submit plans for falsework to tho Engineer for approval. Approval of the Contractor's plans shall not lx considered an relieving the Contractor of any responsibility. 54 F1ga inn end Anchoraggs Bearing plates shall not be placed upon seat be.ar',ng areas vhich are improperly finished. Bearing plates shall be set, in exant position and shall have a full and even bearing upon the masonry. The Contractor shall. drill the holes and sot the anchor boltst except where The bolts shall be accurately and fixed bolts with r grout lct into the ompletely filling i;he holes. 6. ,Stral___ hteni ,;ivCLs3r r The straightening of plates and angles or other shapes shall bo done by methods not likely to produce • Praoture or other injury. The metal shall not be hoated unless permitted by the Engineer, in which ease, the heating shall not be to a higher temperature than that required to produce a dark "cherry red" color. After heating, the metal shall be cooled slowly. Following the straighten- ing of a bend, the surface of the metal shall W carefully inspected for evidence of fraoture. If members are damaged in straightening, they shall not be used in the construction. 7. U i~t : Corrections of minor misfits and reasonable amount of reaming and outti.ng of excess stock will be considered a legitimate part of the eroction. Any error in shop work which prevents the proper assem- bling and fitting-up of par;,s by the moderate use of drift pins or a moderate amount of reaming and slight whipping or cutting shall be reported immediately to the Engineer, and his approval of the method of correction shall be obtained. The correction shall to made in the presence of the Engineer, who will check the material. Such work is to be done at the entire expense of the Contractor. E1 1D OF 1113A • • 107-2 ITEM Nge DD A, General.: During construction the Contractor sf:all maintain the premises • in an orderly, neat, and pre,zientable condition, ,;craps and debris shall not be left scattered around but shall be a „emblod at one place. !Mn con- struction under the foontract has been otherwise comploted, the Contractor shall remove all left over construction materials, equipment, scraps, debris and rubbish, and leave the site in a neat, somll-kept appoarance. To provide good sanitary conditions during construction, the Contractor shall provide adequate sanitary facilities for the workmen, and Contractor shall not permit any unsanitary practices to continue which would prove ob,jeotionable to the surrounding property owners, At the completion of the work all builtAings and structures shall be broom clean. He shall clean the walls of all hydraulic structures of dirt, stains, or other material and pipes shall be left free of any and all foreign material. lie shall remove all marks, staine, dirt and soil from all finiahnd surfaces and shall thoro- ughly clean all floors, clean and polish all finished hardware and other such devices. I END OF ITEM • • 108-1 SECTION II _ ZIECJIANICAL SPCCIFICAT_ IONS • ITEigO_ T . 09NERAL RE UIRGI-IENTS A"ND,EQUIPHE1NT INSTAL[,ATION A. General Reau9 ,s 1. Oen_ oral: These specifications are intended to be so written that only equipment and materials of `he best quality will be furnished; the fact that the spooifioations may fail to be sufficiently complete in some detail w.11 not relieve the Contractor of full responsibility of furnishing the best quality equipment and materials and incorporating these into the project in the best manner. Attention is directed to the fad that separate quota- tions have been received on major items of equipment (listed below), which shall be purohased by the Oi~ner. Specifications for the equipment to be pur. chased by the Owner constitute Section V of these specifications. Copies of the manufacturer's quotations for this equipment are available for examina- tion at the office of the Director of Utilities in Denton and at Freese) Nichols and Endress. 2. F;auisyment t r~ u_ r Owners The 0-mor has received separate quotations for oertain items of major equipment. The "purchase order" will not be issued prior to the receipt of bids for this Contraot. A general die- oription of the equipment to be furnished by the Owner is shown below. Detail 0 speoifications for this equipment is shown as Section U (Contraot No. 61-9) of these specifioations. PArmLnu_Lo,r with motor starter • tAr D1QH Units 1 - 2500 ofm Blower and 1200/900 RPM Motor I - 2500 ofm Blower and 1200/600 RPM Motor 2 - Dischargo Check Valves 2 Relief and Unloading Valves 4 - Rubber Spool Typo Expansion Joints 2 - Suction Snubbers 2 - Discharge Snubbers 2 - Discharge Butterfly Valvon 2 - Intake Filters 2 - Motor Starters -Raw 3ewave LumaiDr 9dtn 1 4.7 MOD Centrifugal Pump with 50 IIP Variable Speed Motor with Motor starter 1 - 4.5 MOD Centrifugal Pump with 50 IIP Motor with motor ntarter l - 791 MOD Centrifugal Pump with 100 NP Motor with motor ntarter, Right Angle Drive and Pmergenoy Butane Fngine Drive 1 - Pump level control equipment p 201-1 0 k turn S1e Pumping Unita 2 - 910 GPM Centrifugal Pump with 20 HP Wound Rotor Motor Drive with Motor starter 1 - 1050 GPM Centrifugal Pump with 30 HP Motor with Motor Starter 1 - 2000 GPM Centrifugal Pump with 50 HP Motor with Motor Starter Primary Clarifier 1 - 55 Foot Diameter Sludge Collecting Meohanism for Primary Clarifier !'inal Clarifier l - 65 Foot Diameter Sludge Collecting Meohaniam for Final Clarifier Air Diffusion Equipment as Base Bid 16 - Swing Joint. Assemblies, Hangor Food Pipes, and Diffuser Tube Headers I - Portable Air Hoist 480. Air Diffuser Tubes b. Alternate Bid • 6 - Ball, Bell and Flange air main fitting 6 - Feeder Manifolds 12- Angle valve 192 Air diffusion devices (large bubble typo) 192. Flanged saddles, gaskets, U.bolts with washer and nuts I 48 Header supports 96 Anchor Dolts Gr,jt ChubqxE i men 2 - Diffuser '.Dube Headers I 12- Air Diffurers 1 - Bucket Elevator with Drive and Motor Starter I - Screw Conveyor 1 - Air Main from Blower Muffler to Drop Header 1 Blower oomplote with Motor Starter Qlorinati.on Eauin, l - 29000 Lb6 per Day V-Notch Chlorinator and Appurtenances Uludne Direction I:ouiypint I - Digoster loating Cover and Waste Can Equipmont • 201e.2 _5luc~GCe llensity M~,surina Sygt,~r ~ Meterip ~ ui n 1 - 16" Flow tube, transmitter and receiver for Ttaw Sewage Force ;lain 1 10" Flow tube, transmitter and receiver for Rnturn Sludge Line 1 - 3" Magnet;-. F?nw Meter for Primary Sludge 2 - 6" Propoller rooters for Return Sludge Line 1 811 Propellor meter for Return Sludge Line 1 • 12" Propeller meter for waste sludge line 1 - Orifice Plate and Air meter 3. Lyh~ioants. Sceci~l Tool ay The Contractor Shall be raoponsible for providing lubricants and special tools for all items of equipment furnished by the Contractor which require suoh. 4. Manufacturer's ReAxesentu 1 The Owner has purchased as a part of the equipment listed under Paragraph 2 above the services of oompetent tech- nical representatives of the manufacturer to instruct and assist this Contrao- for in the installation of the equipment. These representatives will not perform any actual work, but will serve in an advisory oapaoity. While the Owners agreement with the manufaoturer does not specify a definite length of time for servioe, this Contractor will be expected to request a reasonable length of time of these representatives. 5. a ufao R iv t The Contractor shall furnish the services of a oompetent teohnical representative of the manufacturer for all • items of equipment furnished by him, except suoh equipment not requiring suoh servioe due to its simplicity of installation and adjustment. B. Installation of racists The Contractor shall install all equipment shown on the Plans and deooribed in these Speoifications, together with the above listed equipment which is described in Section V hereof. All equip,. ment shall be installed in strict oonformity with the manufacturer's tech- nioal representative's installation instruotinns and certified erection drawings. All equipment shall be installed iii a workmanlike manner and plaoed in operating order. ENT) OF ITEM • • 201-3 ITEM N0. 202 - BARMINUTOR A. aenaralt There shall be installed where shown on the plane one 24" ! Model No. "C" BARMINUTOR screening and cutting maohine as manufactured by Chicago Pump Company. The unit shall be installed in aooordance with the manufaoturer's recommendations, securely anchored and grouted in place and painted as covered under subsequent speoifications, The Owner will furnish such equipment as set forth in Section V (Contract No. 61-3), B. By-Pass Bar Soropns There shall be furnished and installed a manually oleaned by-pass bar soreen as shown on the plans. The bar screen shall consist of steel. bars 3/811 thick by 1." wide, formed straight and true, and held firmly and accurately in place with 1.518" clear openings by means of welded spacers at each end. The bar soreen shall be constructed and installed so as to be readily removable. O. ak1W_PaintinuI All metal shall be free of all rust di,- as well as all other foreign substances by oleanir,~r t, and shale or sandblasting. Apply one coat of INERTOL Rust InMbitiveUPrimer Noipb2le Field painting shall be aft speoified hereinafter. • END OF ITEM i i 202.1 STEM NO. 203 - GRIT REMOVAL EQUIPMFNP A. en rgl: Thore shall be installed an air diffusion system, a spiral conveyor, and bucket elevator typo grit collector similar to that shown on the Plans. The equipment shall be as specified in Section V hereof and shall be furnished by the Owner, All equipment required and not specified under Section V (Contract No. 61«3) shall be furnished by this Contractor. B. X s all iQn~ All equipment shall be installed in full accordance with the equipment manufaoturerts recommendations. Piping shall be installed as specified in Item 209 and as detailed on the Plans, END OF ITEM S 203-1 • ITEM NQ. 2Q_ _ 1~RTt9t1RY ANb F'IN~L CILRQxrx UAL 3 • A. Den ra o There shall be installed one (1) mechanism for the circular primary clarifier 55'-0" diametort p.0" SWD with 11-3" freeboard and having a bottom floor elope of 1" in I2" and one (1) mechanism for the circular fircal clarifier 630-0" diametor, 121-0" 8WD with P-311 freeboard and havL a bottom floor slope of 21, in 12". The mechanisms shall be of the center drive type with center cage and rake arms which slowly rotate and move the oolleoted solids to a sludge pocket 3.n the center of the tank. Detailed epeoifioations for the mechanisms arh in Section V of these specifications. The mechanisms shall be purchased from the manufacturer by the owner. The equipment manufacturer's quotation will be made avail- able and shall be carefully examined by this contractor prior to submission of bid for this project to ascertain whether or not additional materials will be required to complete the installation. B, jnstallg jM: The meohanisms shall be installed in full accordance with the manufacturer's reoommendations and shop drawings, The installation and ad,ustment of all equipment shall be oheokod by a competent technical representative of the equipment manufaoturer. Attention is called to the fact that 2" of grout shall be swept into place by use of the mechanism. • • to 1 204-1 e ITD4 No, 7.05 - SUMG8 DIGFSTI.It AND WASTF OAS EQ,IIIpMENT A, G„epifgl; The sludge digester shall be constructed in accordance with the details shown on the Plans. All concrete shall be Class A. Floating cover and waste gas equipment shall be furnished by the Owner as specified under Section V. Any equipment not included in Section V (Contract No. 61-3) and required for a complete installation shall be furnished by this Contractor. Piping shall be installed as specified under Item No, 209 and as detailed an the Plans. D. ladallatioI of F 0 in e t In the assembly of the floating covers all connections shall be welded as required, to obtain a gas-tight cover. Welding shall be shielded arc welding and shall oonform to thm latest stand. Ards of tho American Society for gas-tight welding. Aftex ereotion, floating covers shall be tested by floating on water in the tarsi. causing air to be trapped under the osiling plate. All welding seams shall be tested by means of a soap suds solution and any leaks must be rewel.ded► At the factory, covers will be PIven a priming coat of paint, except for areas along seams to be welded. After completion of testing, all areas along welds shall be primed and damaged areas spot painted. The entire cover shall then be painted as specified in the section PAINTING. Any parts of the cover adjacent to the tank wall or elsewhere that will be inaccessible for painting after erection e'nall be given the required coats of paint prior to erection. The services of a manufacturers representative will be furnished by the manufacturer to make an inspection of the installation and to assist in the final inspection and testing of the equipment. C, a °.o fing ~Y@r F19gt n ~Cevdrs Dirootly on the steel frame work shall be placed 2" x 4+' rafters on edge And bolted to the steel frame, as nailing strips on the top chord of each of the trusses and also in the intermediate spaoes, making a maximum span between rafters of 24 inches. On top of the 211 x 4" rafters shall be placed a roof deck of seasoned 2..inoh T & G grade A yellow pine lumbero free from large cracks, knot holes and loose material. Lumber shall be pressure treated by creosoting to a retention of a minimum of 6 lb. per ou, ft. of wood, or by imprd nation with Volmanizing Saltc;" (ohromatod zinc 31-iloride) equivalent to 3/4 lb, per ou, ft, ~,z wood. The roof deck shall he covered with a built-up roof. Roofing shall be equul in every respeot to Barrett Specification Roof, 20 year Bond Type AA 9 and shall be laid in exaot accordance frith the manufacturer+s direa- tions, The roofing installation shall be complete with a bituminous baso, metal counter. flashing, and all other flashing necessary or required for a strictly firs$ glass piece of work. A gravel guard shall be installed around the edge of the roof and shall be of such height As to extond one (111) inch above the finished roof surface, Weep holes shall be provided at intervals through the gravel guard to permit drainage of the roof surface. • 205.1 i D. DipeSter Con rol i~~,1,in~; The Digester Control Building shall be con.. • struo4ed as shown on the flans and as heroin providod, All concrete shall be 3000 psi quality. All masonry, window, and door details shall be in accordance with the architectural section of these specifications and as shhown on the Plane. E. Waste Gap Equipments 'Pile principal items of equipment shall be lbnlished by the Owner under the provisions of Sootion V. The Contractor shall furnish all other material required. Piping shall, be installed as shown on the Plans and/or as required by manufacturer's drawings. In general the piping shall be layad to uniform grades with drip traps at low points. END OF ITLl9 • M • 205-2 • lT1a4 20; AIR DIFFIJSIOtJIJIPMGNT At CAS Urals This item covers the installation of air equipment which is to be furnished by the Owner plus the furnishing and installation of the necessary additional piping, supports, valves, eta, for a complete installation, The equipment to be furnished by the Owner shall be as sot forth in Section V (Contract No. 61. 3), B, L&U..Bjd: The "base bid" for this Contract shall include the installation of "swing diffuser", Attention is called to the fact that the Owner has purchased only the swing header with main air line too fitting. The main air line along the basin is not inoludod. C, Alternate Bi„ i Alternate 'bide are request3d for a fixed header air di,ffuyion system as detailed on the flans, Attention is called to the fact that with this eystem the Owner will furnish only the angle valves, air diffusers, header supports and anohor bolts, and special fittings for connecting air main to feeder manifold. Thio Contractor shall furnish all piping and fittings for the hanger air feed pipes and diffuser headers To; installation as detailed on the Flans and specified herein. D, las_tAallationt The equipment., pipework, eta, shall be performed in acoordanue with the manufacturer's recommendation and applioatory aeot;ion of these specifications. The placing of air diffuser tubes shall not begin until the Engineer's approval has been obtained. Prior to connecting the tubes to the headers, the Contractor shall carefully clean all piping, headers and aooossori.es through which air is delivered, so that all dust, dirt, oil, grease, or other foreign material will be effectively removed from contact with the air being blown through the tubed. This cleaning shall. be done with clean water at a velocity of two to three foot per second or with air at a velocity of one hundred feet per second, E. TT tit After the piping, headers and tubas for any tank have been installed and when dirooted by the Engineer, clear water shall be intro duoed into the tank until the diffusers have been covered about two (2) inches. Compressed air shall then be released through the diffucere and any leaks through ,joints, piping, and the like shall be repaired, This test shall be repeated until the entire system is tight, to the satisfaction of the Engineer. 'Posting will be donq by the Contractor under dirertion of the Engineer. END OF 17'EM i ITEM NO. 207 . METERING EQUIPMENT i A. = Install one (1) 16" flow tube and meter for metering raw oowage from Raw Sewage Pump Station) and one (1) 3.0" flow tube and meter for metering return sludge from Return Sludge Pump Station. Furnish and install all small piping and valves nooeseary for connecting the flow tubes to the transmitters inside the vaults. Also, furnish and install piping necessary for installation of continuous flushing systems which will be furnished with the flow tubes by the Owner. 14 ~usmittera' Install for oaoh flow tube one (1) flow transmitter. The transmitters will be of the time-impulse typo, requiring not more than two wires for transmission of time impulse signals between Transmitter and Receiver. 2. Install a r instrumentnt panel n the Return receiver Pump Stations efurnishwandbinstalloall necessary connecting wiring between transmitters and receivers. D. ~laanetia Plow ideters Install one (1) 3" magnetic flow meter in Primary Sludge Line as detailed. Install receiving instrument for flow meter in Primary Sludge Pump Station. i C" 11 0 M s Install two (2) 6" propeller motors for return sludge, one 1 8 propeller motet for return sludge, and one (1) 12" propeller motor for waste sludge. Installation details are shown on the Plane. D. Orifice P1a_±.~, and Air MaF.-V Install an air metering system consisting of an orifice plate, straightening vanes, flow transmitter, pneumatic receiver., integrator, and one (1) 6" air receiver indioator. and Furnish valvese(J"NPT) complete the hlonuts cation shown on the Plane. El 2Qntrol_Pininat No attempt has been made to show on the Plans all the small control piping, fittings, valves, stool necessary for proper installation of metering equipment. This Contraot~r shall furnish and install all such piping and accessories as may be required or recommended by the equipment manufacturer to place all the equipment in proper working order. END OF ITEM i 207.1 w STEM N0, 208 CjJL0 MAIPTAM EOfirnij T A, ocne : The Contractor shall install. at location indicated on the draw. ings one 1 2,000 lb. per twenty-four (24) hours chlorinator: solution piping from chlorine machine to points of chlorine applioation; chlorine solution diffueersl gas manifold, pressure regulator, and piping from chlorine containers to ohl,orinatorl together with chlorine solution manifold, rotameters, valves, and other appurtenances of every sort required for a complete chlorinator installation of the type indicate& The chlorinator and appurtenances shall be furnished by the Owner. Specifications for the ohlori- nator equipment to be furnished by the Owner are in Section V hereof. All items required for a complete installation and not specified under Section V shall be furnished by this Contractor, B. Solution P~n~ng asn~ Aiffu Furnish and install V Typo 1 Polyvinyl Chloride solution pipping from the chlorinator to the two (2) points of appli- oation shown on tho Plans. A rubber lined and rubber covered orifice type chlorine diffusor with support brackets shall be installed in eaoh manhole. Polyvinyl chloride pipe shall be laid in a workmanr'%e manner in aooordanne with the manufacturer's recommendations, properly proteoted, and shall be without leaks when installed. C. ~hlcrine 0.a-e~-1'ibingi Furnish and install ohlorino gas header, header valves, and all other naoessary appurtenances to provide a oomplete gas service from aontainors to chlorinators. Gas piping shall be extra heavy genuine wrought iron with heavy malleable iron fittings, A. Tea.irj All chlorine gas and oolution line piping shall be tested prior to baokfilling. Toot shall be made on gas piping by building up an air pressure equal to the anticipated operating pressure in the line and check- ing each joint wit, a soap solution for leaks, All leaks shall be repaired. The solution lines shall be tested by a water pressure equal to the antici... pated operating pressure and all leaks shall be repaired. EM} OF ITEM t 208-1 • ITEM NO. 209 _ PIPING AMD PIPEWORKI A, Ceneralf This item governs the furnishing and installing of all piping, • The Plane show sizes and general arrangement of all pipes, responsibility for furnishing exact lengths of the various pipes for exact "make-up" nnd for providing special items as may be required to simplify or facilitate the installation, rest with the Contractor, All pipe hnngers, supports, or other devices required in the inst4illation of pipe, fittings, valves, meters, or other similar appurtenances shall be furnished and installed. Fxoavation and preparation of the trenches shall conform to the specification item "Excavation and Baokfill", B. ,`.it TrorPim_and Uttinnsi Cast iron pipe shall conform to the American Standard Specifications for "Cast Iron Pit Cast Pipe for 1.4ater or Other Liquids" Designation A21,2-1939 or to American Standard Specifications for "Cast Iron Pipe-Centrifugally Cast in Sand-Lined Molds for Water or Other Liquids" Designation A21.8. All cast iron pipe shall be Class 100. Cast iron bell ar:d spigot fittings shall conform either to the American Water Works Association standard sjodfiostions or to American Standard Specifications Designation A21,10, Fittings 121" and smaller shall be Class D while those larger than 12" shall be Class B, Flanged • fittings she~11 be in accordance with ABA spooificationa 1316,1 for Class 125 fittings or the AVNA with Class 125 flanges. All oast iron pipe and fittings, except suction and discharge piping • to air blowers and air main, shall have an inside mortar lining to conform to the American Standard Specifications for "Cement Mortar Lining for Cast Iron Pipe and Fittings ff Designation A21.4-1939 or to manufaoturerts specifications for "Enameline" lining, Cast iron pipe and fittings to be laid in the ground shall hpve an outside coating to conform to ABA Specifioations for "Coal-Tar-Dip Coating for Cast Iron Pipe and Fittings" Designation A21,5-1940. Cast iron pipe and fittings to be exposed shall be painted as specified elsewhere. C, force Co orete So r Pi with R Ober asket Joint t Reinforced concrete sewer pipe th rubber gasket tints shat conform to the current specification for reinforced concrete culvert pipe, A.S.T.M, Designation C76- 573', Class III, with the following additionnt 1, All pipe shall be machine mado, 2. Pipe shall all be Extra Strength. 3. Minimum wall thicknesses shall be 1/12th diameter, plus one (111) inch as listed in A,S,T,M, C-76- 57T, Table III, Wall B, 4. Pipe shall be steam oured in accordance with method prescribed in A.S,T.M. Specification C76-5?Texcept that the steam curing time may be reduced to not less than 12 continuous hours. • Pipe may be transported to the job at any time within three days after the prescribed steam curing period provided it successfully masts all physical load tests and other requirements. 209-1 54 Connecting joints of reinforced concrete sewer pipe shall be of the rubber gasket type. The ends of the pipe shall be manufaotured on accurately machined metal rings of heavy design to insure accurate and concentric ,joints. These rings shall be left on the pipe sufficiently long after manufacture for the pipe to hold its true shape. All. joints shall be made with a flexible compression type rubber gasket. The form, type, and size of the gasket shall be Press-Seal, Type #1 or #1-11 as manufactured by the Goodyear Tire and Rubber Company or equal. The Prose-Seal rubber gasket shall truly conform in size to the spigot end of the pipe and shall be firmly oonneoted thereto with an approved rubber cement compounded for this purpose, 6. The Owner shall have free access to the manufacturer's plant while production is in progress and may at any time refuse to accept pipe made when the plant is failing to follow the stipu- lations of the speoifioetions in regard to workmanship, or failing in provisions to insure a uniform product coming within the permissible variations of the specifications as to size, thickness, position of the reinforoing steel, and ouri.ng of the pipe. The Owner may reject pipe if adequate means and methods are not provided so as to insure the manufacture of a product of uniform quality. 7. Limestone aggregate shall be aged in the proportion of 75 percent by weight of the total aggregate and shall conform to ASTM Designation C-33. Reinforced "Infiltite" Conorete Pipe as marufaotured by Gifford- Hill Pipe Company is considered acceptable, All pipe shall be tooted and inspected at the point of manufacture in aooordanos with the A,S.T,M, test requirements and shall bear the initials or name of the manufacturer, the date of manufacture and the testing laboratory's stamp of approval. Attention is directed to the fact that some of the lines for which this type pipe to specified will be under pressure when in operation. D, W~~t Clay sewer pipe and fittings shall be Extra Strength Vitrif ed Clay ipe manufactured in accordance with and conforming to all requirements of the current Standard Speoifioations for Cxtra Strength Clay Sewer Pipe, A,S.T,M, Designation C200 or 0278. All pipe shall be inspected and tested by an independent testing laboratory at the point of manufacture in accordance with the A,S.T,M, physical test requirements, The laboratory selected must meet the approval of the Owner and the oost of all testing shall be borne by the manufacturer. All pipe shall bear the name of the manufacturer, the date of manufacture, and the testing laboratory's stamp of approval, 209„2 • C_°norete Cv}WU. r 1 Conorote cylinder pipe, modified prestressed (or pre-tensioned reinforcement) shall consist of a welded sheet steel cylindor lined with a dense oonorete lining and around which there L, placed reinforcing bars wound helically under measured tension, with a dense concrete coating covering the cylinder and the bars, and with steel joint rings of the bell and spigot type for rubber gasket. The pipe and ~,iPeet fittings ,•shall comply with Federal Speoifioation ,58-P-381, entitled: Reinfaroed Conare e, P (~4 r'!! $t1@ioned Rs~n+orceme:~t (Ul e~ ind4r_Tvno Copies of the Federal Speoifioation may be obtained from the Engineer upon request. Contractor shall furnish all fittings, specials and steel collar for connecting to ot.hor types of pipo. Pipe shall be designed for a minimum working prP:ssure of 100 psi, F, Steel and Wrnurrht Ir4D Pik Ftttinrtas 1, Atiee__ Ping Unless specifically called for on the plane, all steel pipe, 611 ani under, shall conform to A.S.T,M, Specification AIPO-57T "Black and Hot-Dipped `Gina Coated (Galvanized) Welded and Seamless Steel Pipe for Ordinary Uses." Pipe shall be standard weight unless otherwise noted. Gas piping to be laid under ground shall be given a shop coating of coal tar enamel 5/32-inoh thick and wrapped with 15 pound asbestos felt. Coating shall be applied in conformance with the A,W.W,A. Specification Designation 7A.6. • 2. C?enuina 11ouaht Iron PiaeI Where indicated on the plans, genuine wrought iron pipe shall be furnished conforming to !,.S,T.M. Specifications A.72-57T. Pipe shall be galvanized to meet the re- quirements of A.S.T.M. Specification A-153-53• 3s Li==t a. 5_olawodt Screwed fittingo for steel and wrought iron pipe shall be American Standard 150# Mallaable Screwed Fittings (ASA016-C) galvanized, b, 41kv"I Flanged fittings shall be oast iron and shall meet Sshe requirements of the American 125# Flanged Standard Specification, Companion flanges shall be 12N` ASA cast iron threaded flanges. c. Welded: Welded fittings shall be of the weight comparable to the lino in which they are inblled. Flanges shall be 150 slip-on flanges. Fittings shall be seamless steel oonforming to ASA Speoi£i.. cation B 16,9 and A.S.T.M. Specification A-234. Slip-on flanges shall be forged steel, conforming to ASA Specification B 16-C and A.S.T.M, Speoifiaa- tion A-181, Butt welding olla shall be long radius, • 4. ~t Unions for sarewod piping shall be 150# Standard Malleable Iron Galvanized, brass seat, grout-,point unions, equal to Crane No, 1280. • 209-3 • C, Conner Pit)() and Dais 1. Conpor UM.- Copper ptpe shall be Types K. L, or M, hard • drawn copper tubing with Type K and Type L being used at points where rigidity is neoessary. Tubirig shall conform to the American Standard for c0pp01' water tube, ASA Designation H-23.,1, 2, Fitbingsi Fittings for all copper pipe or tubing shall be "Wrought Copper Solder-Joint Fittings" as manufactured by the Crane Company, or equal, Valves in copper pipe runs shall be Mueller Streamline Valves, or equal, H' Brass Pt"Q U Fj t t Brass pipe shall be regular weight red brass pipe. Fittings for brass pipe shall be 125# sorowed brass fittings as manufactured by Crane Company, or equal. Z, Joint Meterip t braided Psizedohemppacking or kuntarfor red,, bell twisted sando sterilized joints shall be 2. &agj Lead for caulking shall conform to A.S,T,M, Specifications D-29-55 for common "Desilverized" Lead, The producers name or identifi- cation mark shall be clearly cast or stampod on each pig of load, for fla insertions rubbojr andk1/16" thick,geTheyishallhbelfullofaced,bost quality • 46 Bolts3 Bolts for flanged joints shall conform to A.S.A. for Wrono cad Bolts and Nuts and Wrench Opening Designation B18.2-19ioe They shall have hexagon nuts. 933• J. kaYina Cagt lron Pinei Cast iron pipe and fittings shall be handled in suoh a manner as to avoid shook. The pipe coating shall be protected insofar as possible, Pipe shall be kept free from dirt and ether foreign matter. Pipe and fittings shall be aligned and maintained in t;hA required lines and grades with joints centered and spigots home, All pipe shall be carefully inspected for defects and rung with a light hammer to detect cracks. Any defective, damaged, or unsound pipe shall be re,jeoted, All field outs shall be done in a neat, workmanlike manner without damage to the unable sections, All lumps, blisters, and exooss coal tar coating shall be removed from the bell and spigot ends of pipe prior to assembly, and ends shall bo wire brushed and wiped clean and dry prior to pouring. Braided hemp, or other material, shall be of the proper dimension to center the spigot in the bell, Each strand of material shall be driven home prior to placement of further strands, Maerial shall be permanently packed into the joints with suitable yarnii,g tool, leaving a minimum of 2f inahes of depth in the bell for the lead joint matorial. Lead shall be heated in a melting pot kept near the joint to be poured, brought to proper temperature so that when stirred it will show a rapid change of color and so that when poured into the joint space it will insure a perfect ,joint, Before pouring, all floating material shall be removed, Joint runners used in pouring the lead joints shall fit snugly againot faces of bell and the r 209-4 outcido of the pipo and shall to tampod with clay at the pouring gato to pormit the fil.li.ne of the joint oven with the top of the bell. F,ach joint shall be mado with ono pour filling the joint space. After the poured joint has cooled to the temperature of the pipo, tho load shall bo esulkod by means of pnoumatio tooln or by hand tools, until thoroughly oompactod, making wator-tight ,joints without ovor-straining tho bell. Flanged piping shall, be orooted in accordance with the controlling dimensions shorn on the Plans. i1oh piece of flangod pipe shall No thoroughly cleaned to remove dirt, rust, groans, and other foroign matter, and flange faces shall be thoroughly wire brushed to insure oven bearing for gaskets and mating flanges. Individual runs of piping shall be brought to true grade and alignment by moans of erection bolts and drift pins, without "forcing". Hangers and supports shall to installed and adjusted before flange bolts are finally tightened. Minor adjustments to meet connections to pumps and other fixed installations shall, to made in the "mechanical ,joint" or "tako-up" provided for that purpose. All connections to pumps must align perfectly before installation of flange bolts to those ,joints, to eliminato stress transmission to equipmont. Flange bolts shall be installed with flange bolts in one dirooti,on, Flange bolts shall be tightened, each in turn, at a uniform rate around the ,joint. K. L~YIn~ Rubbor Gasko oin Con 1gJ Pins In laying rubber gasket joint concrete pipe, care shall be oxercisod in handling the pips to prevent damaging the rubber gaskets and the ends of the pipe. Cara shall be oxor- caned to clean all dirt, rock or other foroign matter completely from the inside of the bells or grooves and the outside of the tongues or spigots. Any dirt or other foreign matter which remains in the joint might prevent a wator-tight ,joint. Immediately before placing each pipo, the groove or boll and of the preceding pipe shall be oootod with a lubricating matorial, flax soap or equal., approved by the engineers for that purpose. Minoral lubricants will not be permitted. The pipe shall then be assembled by pushing or pulling together with sufficient .force to cause the spigot to ontor the boll and be forced com- plotely home. On all, Woo larger than 24" in diamutor, the inside annular space provided for that purpose shall be completely filled with a plastic portland cement mortar to offoct a smooth hydraulically clean flow, L, ng~o av S~ ocr t Joints for vitrified clay sower pipo shall be made by using a plastic We sewor joint compound equal to JO-60 as manu- facturod by the alas Minoral. Products Company. Sower pipe shnil be laid to the grade indicated on tie drawings with the spigot and ft"litroam. All pipe shall In clean when laid with permissible defeats placed on the top of the lino. Adjacent lengths of pipe shall be adjusted with reference to each other and blocking or wedging botwoon hub and spigot will not be pormitted. Spigots shall be adjusted in the bolls to give a uniform space all aroundl no connection shall be inadequate for oaulking. Opon ends of the pipe shall be temporarily closed with wood blocking at the and of a i day's work, • 2095 • After the pipe has boon laid, a gaskot or closely ti&.9tod, dry un- treated oakum (or an approved substituto) of oufficiont diamotor to cantor the :spigot in the pipe socket, and in one piece of nufficiont longth to • pass around tho spigot of the pipo and lap Mt the top, ahall bo placod in tho boll and solidly rammod or caulked into tho annular opaco botwoon tho ,3pirot and the sockot in such a manner as to be against the shou}.dor of the sookot. Mo part of the gasket shall project into the pipe, Mo joint shall be scaled until the gaskets in the next two joints in advance have boon insorted and caulked, After the gasket has boon placed, the remainder of the space shall bo fillod with the joint filler. Joint filler shall be used strictly according to the manufacturer's rocommendatione, M. Laying Cylinder Tyge Concre.e P ncas All (ionoroto pipe and aocessorios shall be laid and jointed in the manner heroin spucified in the presence of the Engineer, and subject to his approval. All materials found during the progress of the work to have cracks, flaws, or other dofoots, will be ro- ,jeotod by the Engineer, and the Contractor shall promptly remove from the site of the work. All pipe and fittings shall be laid and maintained in the required linos and grades and with all joints centered and spigots home. Pipe shall be laid to within two-tenths foot of true alignment in any fifty foot section and to within four ono-hundredths foot of true grade at any point. Orado and batter boards shall, be maintained so as to insure aoour- ate placement of the pipe. • Caro shall be taken by th) Contractor in mal.ing joints. Bumping of the pipe in the trench will not be pormittod. Thu ondless rubber ring gas- kots shall be properly lubricated with a suitable vegetable compound soap before they are stretched over the spigot end of the pipe and carefully • seated in the groove, without twisting, rolling or crimping. After the pipe has been laid, but before back-filling{ has boon completed, the out- side annular space between pipe sections shall be completely filled with cement grout. The mortar shall consist of one part portland cement and two and one-half parts o sand. All foreign matter or dirt shall be ro.. moved from the pipo, and the pipe shall be kept clean by approved means during and after laying,. whenever the work of actually laying pipe stops, the open ends of the inotalled seetiona of pipe shall be closed with a water-tight diaphragm. U. ]~,sta3. gr;Stecl ri t All runs of piping, togothor with sizes and outlets, shall. be as indicated on tho drawings, All pipes shall be cut accurately to measurements ostablishod in the field and shall be worked into place without springing or forcing, All, piping, after cutting and threading, shall be roamed to romovo burrs. All scrow joints shall be made with graphite and oil, or an approved graphite compound, applied to male thread only. Threads shall be fu?.1 out and not more than three throads on the pipe shall remain exposed. Caulking of throaded jotizts to stop or prevent leaks will not be pormittod. Unions shall be providod where required for disconnooti.ons. Changes in pipe sixes s?gall be mado with reducing fittings, All piping above ground shall run rarallol with • the lines of the building unless otherwise shown. M 19» 6 • 01 Installing Small and Wrought Iron Pipe; Pipe shall be, installed with and connections as may be indicated on the plane or approved by the Engineer. All piping shall be thoroughly cleaned to remove dirt, dwit, rust, grease, • and all other foreign material prior to laying. Pipo in trenches, or otherwise, shall be brought to the required lino and grOe: and held securely in position while all oonneotions are being made, No displacement of the pipe which would cause undue strain on the joint will be permitted. Fi& welding of steel pipe, if any, shall be done in accordance with the Amorioan Water Works Association Speci.fioation 0206«50, "Field Welding of Steel Water Pipe Joints." All steel pipe oonne,,jted by sorewed fittings shall have all burrs removed by reaming prior to threading. Screwed dolnts shall be made with graphite and oil or an approved graphite compound, applied to male thread only. Threads shall be full out and not more than three threads on the pipe shall remain exposed. Unions shall be provided where dieoonneo- tions are required. Changes in pipe sizes shall be made with reducing fittings. Piping shall be fitted together in 9 tight and workmanlike manner, and properly supported or anchored, P, I jjnstalling C ny- P s Copper piping shall be handled in such a manner as to prevent flattening or distortion. All bendry in piping shall be by use of fittings. Ends of copper tubing shall be out square, with the burr removed from the end of the tubing with a file or scraper. Joints shall be prepared, fluxed, and soldered in accordance with the instructions of the manufacturer. In general, all copper pipe shall be laid out square with the building without diagonal runs, Where copper tubing is run on walls or ceilings, it shall be anchored by _ ed manufacture. Depending upon location,coppo pipe shal'tsbeaof theatypev • or class necessary to provide true straight runs and adequate rigidity for any unsupported lengths. Copper pipe shall be supportod on wall brackets to nuoh position as will Allow one straight conneoting piece to %he equipment it serves. Union shall bs provided for each equipment oonneotion. in the same nx,~,inov sas s' fied Brass wrought fittings iron thiAscrewedll be for steel g and and above, I2. I'fI18.fsil~,,.ira ed s All gravity sewers and pump discharge pressure lines shall be lai+; on a uniform grade and true line from control point to con- trol point. The Engineer will set line and grade stakes eveW 50 feet with out figures thereon, Gravity linos shall not vary from true line more than ono tenth (1/10) foot nor from theorotical grade more than two hundredths (2/100) Soot, Pressure lines shall not vary more than trio tenths (2/10) foot from true line pore more than four hundredths (4/100) foot from the theoretical grade. The Contractor shall furn?,sh and set all grade boards, grade lines, plumb bobs and lines, and measuring poles neoessary for laying pipe within the tolerance allowed. Grado boards shall be set at intervals not to exceed 50 feet. • ry V 2Uy" F.~ S. Sotro~ Pib ntri Attention is called to the fact that small lines .for air and hydraulic controls, equipment connections, eto,, are not do. tailed on the plane. The Contractor shall furnish and install all pipe, valves, fittings, accessories and incidentals shown or indicated on the plans and/or necessary or required for the proper operation of the equip- mont as an integral part of the sewage treatment process, T, Canoretu UtooUD,gs Conoreto having a compressive strength of not less than 1500 psi shall be used for backing of all fittings. Bends of 22J degrees and greater, plugs, and all tees, orossos, eto „ shall be blocked with concrete as a thrust backing. Blocking shall be placed between solid, ground and the fitting to be anchoredi the area of bearing on the pipe and on the undisturbed ground shall be as direotod by the Engineer. The blocking shall, unless otherwise directed, be so planed that the pipe and fitting points will be accessible for repairs, U. Te_ stings All tests shall be made as directed by, in the presence of, and to the satisfaction of the Engineer. Eight per square8inoh. Alleothtank er discharge tested attheaddoondi00 pounds tions under which they are to serve and shall bo absolutely tight. • END OF ITEM r i 209.8 tD;lr A. P-0 Did-oill This Atom covers the furnishing and installation Of all • Sluico gatoa roquirod in tho work. Sluice gaton to bo furnished shall be equal. to those manufactiu.,ou by Rodney hunt !?ach.lrio Company of 9 Ilator ,trout, Oran{o, Mass. They shall be installed in a workmanlike mannor, at, locations indicated on thri drawings, in aooordanco with manufacturer's rooommandatione; handlod carefully, anO installod in the concrete work in such mannor to prevent any damage to the gate and to eliminate distortion or binding whioh would affect the propor operation of tho gate. Sluico gates to be furnished are as followsi 3 - 24" circular opening Flat Framo Sluioo Gatos for unseating head of 5 foot; Rodney Hunt Sorios 180, or equal, Uth S2500A Handwhool Oporatod Floor Stands for Rising Stems. I - 36" circular opening Flat Framo Sluioo Gato for unseating head of 12 foot, Rodnoy Hunt Series 1809 or oqual, with S2600A Handwhool Oporatad Floor Stands for Rising Stems. 1 - 30" circular opening Flat Framo Sluico pato for unseating head of 20 foot= Rodney Hunt Series 1800 or equal, with S2600A Handwhool (orated Floor Stand tor Rising Stem. • 1 - 30" x 30" square opening, Flat Frc.me Sluico Gate for soating and unseating head of 12 foot= Rodney Hunt Sorioo 140, or oqual, with S2600A Handwhool. (4)orated Floor Stand for rising atom. • D. B.121Qo aLt t All aluieo gates shall have rising atoms with lengths as given on tho drawings. Furnish store guidon and wall brackets an ro- quired for the particular installation,, Gatos shall all be of the flat frame type for attaching to anchor bolts not in the concrete walls, Anohor bolt sizes and lengths shall be as rooommondod by the aluieo gato manufac- turor and shall all. bo galvani.zo(j, A layor of l;mboco grout shall lx, applied botwoon the, frame and tho wall to provide a truo surface for the frame whon the anchor bolts are tightenod. Sluioo gatoa shall bu in oonformancc with the A.ld.11.A. Spooification C501-4l Tv and shall be bronze-mounted. C. UDp..yu),yj,s Furnish tanrl install on outlot Struaturo Ito. 2, as sho%n on the Plane, ono (1) 30' circular flat frame flap valve, flap valvo shall be Rodney Hunt Sorios FY-AC or anprovod equal, and shall be for attaching directly to a oonuroto headwall, clap val.vo shall, be cast iron with bronze mountings. EAD OF ITI;1i • • 710-1 • ~T t9 _ ~ " NS AND OR~IV~rY.ROQ~ i r, T A1'ORB A. laxhaust l'an9: The Contractor shall, furnish and install one (1) oxhaust 0 fan on the roof of the Raw Sowago Pump Station, one (1) exhaust fan un tho roof of the Return Sludge Pump Station and one (1) exhaust fan in the wall of the chlorinator room of the Return Sludge Pump Station. The exhaust xan for the Raw Sewage Pump Station shall ba mounted on the roof in tho location shown on the Plans and shall takn air from the dry woll basement of the Pump Station through an 18" round duct as shorn and exhaust it to the outsido. The fan shall ro 110 Blootrio Vontilating Company, Chicago, 111., size 1.-LsQ;-1639 3/8 horsopover, 29640 CP11 freo air delivory, or an approvocl oqual. Powor shall be 115 volts, 1 phaso, 60 cycle. The roof exhaust fan for the Peturn Sludge Pump Station shall be in- stalled as shown on the Plans and shall take air from the dry well (baso- most) of the Pump Station through a 10" x 12" duct and exhaust it to the outside, The fan shall be ILO El.eotrio Ventilating Company, Chicago, Ill, size L-.LSQ-163, 1/16 horsopowor, 1,740 CFA{ free air dolivery, or an approvod equal. Poorer shall be 115 volts, 1 phase, 60 cycle. The exhaust fan for the Chlorinator Room shall be mounted in the out- sido wall of tho room as shown on the Plans. It shall remove the air from • dirootly above the floor and exhaust it to the outside of the building, Mo fan shall be ILO Electric Ventilating Company, Chicago, 111.9 Typo LQ-103511, Catalog No, 48090 or Pn approved equal, lbo fan shall be equipped with a scroon guard, gravity typo automatic louvers, and a remote on-off switoh, lower for the motor shall be 115 volts, 1 phase, 60 cycle. The fan shall have a capacity of 550 CFM at 01} statio pressure. D s A: Furnish for the 11aw Sewage Pump Station gravity type roof ventilators oqual to Typo L, size 16 Broidort Air-X-•11auster. Ventilators shall be equipped with Type FR-4 bases for installation as dotailod on the Plans. Ventilators shall be constructed of galvanized stool., ~,ND QE ITEM 0 • 211-1 • TI~:M N0. 21?, W ASR BrAwf!;tts A. 22nerals This item covers the installation of air blowers and all appurtenances in the Blower Building as indioai!d on the Plans. The air blowers and accessories shall be as specified in Section V of these specifi. oatione. The equipment shall be furnished by the Owner. All equipment neoessary for a oomplete installations and not included in Section V (Contraot No. 61-31 shall be furnished by this Contraotor. ~3• 1 i_Us The air blower units shall be inatalled in accordance with the manufacturer's recommendations. The manufaoturer will furnish the sex-vices of an Erection Engineer from the factory as set forth in Section V. END OF ITEM • • • • 212.1 Y ITEM 21 PFtThiNY SLUDOL PUMPING GOpIPMCN7' A. General: The Contractor shall furnish and install, in the Primary Sludge Pump Station one (1) 60 OPM sludge pump, one ;310 OP14 sludge pump, a sludge density metering system, a sight glass, and all other piping, valves, and appurtenances required for the complete system as shown on the Plans. B. 51udae Pumas: The sludge pumps shall be ,Model DVML as manufactured by Western Company (WEMCO), One pump shall produce 60 GPM at 22 feet rated head. The other pump shall produce 310 GPM at 25 feet rated head, The pumps shall have horizontal auction and discharge, aligned as shown on the Plans. The motors shall be vertical and directly connected to the pumps. Minimum horsepower for the small pump shall be 9 and fur the large pump 71. Motors shall be drip-.proof, three-phaso, 60 eyelet 1170 RPM, designed to operate on 440 volts, I C S h" O j Furnish and install a cleanable eight glass in the sludge piping as shown on the Plans. The sight glass shall consist of a pyrex glass pipe' held in a protective "L" shaped casting by adapter flanges positioning it between neoprene gaskets, The sight glass shall be an 1imoo Process Cleanable Sight Glass, or approved equal. D6 S uses De s~ .v Mp.eritc Ceuiament: A complete sludge density analyzer measuring system shall be furnished and installed. The equipment is specified in Section V and shall be furnished by the Owner and installed by this Contractor. • CND OF ITEM M Y 213.1 • ITEM N0. $14-SL E DRYTNG _D DS A, Lenora s 71.40 sludge drying beds shall be oonstructod in accordance • with the b1eo3000 overnin Mass A)requirements of those otherwise ecifications# Plans. Splash blocks shall be provided as shown on the plans, Construc- tion of drying beds will inoludo preparation of the site. Phis includes all cutting and filling this area to the raquired elevation. 'this work shall be done in full acoordanoe with the itom "Earthwork" in those Spec- ifications. 13. M pboardas Redwood material of acceptable quality shall be used as stop planks at the truck entrance as shown on tho Plano. Steel straps, lifting rings and bolts shall be provided as detailod, C. ~Y~TlK.. ~ s 1. Gave alt This) work shall include furnishing and placing graded sand and gravel and the drains as choem on the Plano and specified herein. 2. Ejjjtar..s Sand shall be clean, hard, sharp grains of siliceous material, free from soft or flaky particles, shalo, loam, organic matter or other dolotorious substances. Sand shall pass 1/4 inch soreoni it shall he washed and graded so as to have an effective size ranging between 0.40 and 0,70 mm, and a uni- formity coefficient not in excess of 14.0, • Torpedo sand shall be of size 0,8 to 1.2 mm, and placed directly on top of gravel at a depth of one (1) inoh. 3, EiUar_g 4yL1t Gravel shall consist of clean, hard, durable rounded rook fragments free from soft, friable, thin, or laminated pieces, loam, and organio or other deleterious substances. Gravel shall bo graded and placed in layers as follows Bottom of drain trench to top of trench » 1-i" to 2" uniforml 4" 1~a or y graded 3 peer layer /4" to 1" uniformly graded T" 2' r " to 3/4" uniformly graded 1/1411 pea gravel, Extreme carp shall bo taken in placing of gravel to avoid damage to Lilo drain, b, MjM _WjU,s Furnish and install cast iron shear gates on sludgo discharge lines as shown on the Plans. Shear gates shall be Catalog No, h-2520-6 flanged frame gates an manufactured by the Mueller Company, Decatur, Illinois. Fu rnieh a two foot lift handle and catch with each nhoar gate. BT.1) OF ITEI1 71.4--1 • I'PI;6i N0. 215 - Y11+,'T WELL LEVCL CUNTROLM A. Genoralt Furnish and install a bubbler tube operated wet well level controller in the Return Sludge Pump Station, Tho controller shall optirate a pneumatically operated knife gate valve which shall be furnished ar.d installed in the return sludge line to the wet well, B. Controllers The level controller shall be a Foxboro Model 41A level controller or approved equal. The controller shall have a range of 0 to 6 feet and a proportional band adjustable from 0 to 25%. The controller shall be furnished and installed on the control panel complete with purge rotometer and combination air filter-regulator, The bubbler tube system shall be installed in the wet well as shown on the Plans. Air supply for the controller system shall be from an air compressor in the blower Building, All necessary air piping for a oomploi,e instatllation shall be furnished and installed. C• Yalve and Operators The valve shall, be a bonnetless knife gate valve equal to the Fig, 388 knife gate valve manvfaotured by Dezurik Corp, The valve shall have 125 psi. flange4,# stainl6ss steel stem, and positioning type pneumatic cylinder actuator. The positioner shall have a range of 1-15 psi. and shall have air-to-open action. The valve shall be enclosed in a vault as detailed on the plane nd shall be oonneoted to the controller with • oopper tubing of size recommended by the equipment manufacturer, END OIL ITE14 • • 215.1 • ITEM NO, 216 --Alit comppxissoRs Furnish and install one (1) 8 CFM air compressor in the Blower Building and one (1) 5 UM air compressor in the Raw Sewage Pump Station. Each unit shall be mounted on a common Nice plate with a 220 volt, 60 cycle, single phase electric motor with V_belt drive. Compressor accessories ,hall include thermal overload protection, starting unloader, air intake silencer and filter, and receiver indicating gauge. The receiver shall be an ASMG, heavy duty vessel and equipped with service and drain valves, and a safety valve set at 150 psi. Comproasore shall be provided with automatic controls set to start at 100 psi and stop at 125 Pei. END OF ITEM • • • • 216.1 • ITEM N0. 217 - INSTR2&? PALWL • A. General: The Contractor shall. furnish and install in the Return Sludge Pump Station an instrument panel, as shown on the Plana, which shall serve as a housing and mounting for the various indicating and recording instru. ments as scheduled on the drawings and listed as follows: (1 Raw Sewage Flow totalizer, indioator, recorder (2) Return Sludge totalizer, indicator, recorder (3) Return Sludge Vet Well level indicator-oontroller 4) Air Flow indicator 5) Air Clow totalizer (6) Return Sludge Punp Controls (7) 14aste Sludge Pump Contrnl B. Panel: The panel shall be a self-supporting unit as manufactured by The Foxboro Company with uni-strut framework. The panel shall have 12" side panels and the rear shall be open. No bracing to the walls shall be raquired. The panel shall be made of 1/8-inoh cold rolled steel, complete with cutouts Tor instruments and all appurtenant equipment necessary for proper operation. Panel and instruments shall be shop assembled, and wired to a common terminal strip mounted on the rear of tha panel. • Finish of the panel shall consist of Parkerizing, filling, surface grinding, priming and the applying of air-dry lacquer of an approved color. All instruments and devices shall be equipped with identifying nameplates fabricated from Lamicoid, 0.065-inoh thick with letters 1/4-inch high, • white on black background. LND OF ITEM i • 217.1 • ITEM Ho. 218 - FfYDnn M"MAATIf PRE, SSURF~YSTFM • A. 0, ea ral: The Contractor shall furnish all materiala, labor, tools, applianees, aquipment, and appurtenances necessary for the installation of a complete water rassure system as ehown on the plane, consist of one (1~ welded steel hydro-pneumatic pressure tank, system shall unit, and automatic controls for water pumping unit, piping towandrfromping the pump and pressure tank for completion of the system shall be ad ehown on the Plans and covered in the Stem "Piping and Pipowork" of those specifi- cations. H. Water p ~inu Unit: The `.,,.,ping unit, which is to be installed in the Return Sludge- Pump `Station, shall be a single stage horizontal centrifugal unit of the close-coupled type with pump and motor mounted on a single shaft. The unit shall be a Type C, "Electrifugal" pump as manufacturca by Allis-Chalmers, or an approved equal.. The pump shall be capable of delivering 500 4PM at a rated head of 155 feet. The minimum motor size shall be 90 horsepcwer, Maximum speed shall be 1750 RPM. The pump motor shall be of the totally enclosed fan cooled typo as manufactured by Allis-Chalmers, or approved equal, for operation on 440 volts, three-phase, 60 cycles, The starter shall be as specified in the electrical section of these specifications. C. Pressure Tank: • 1, Qen ral: The pressure tank shall be as detailed on the flans, in. eluding dished ends, flanged outlets, piping, ladder and inspection manhole. The tank has been designed for a pressure of 100 psi, in strict accordance with American Water Works Association Specification D100.52, "Standard Specifications for Steel Tanke, Standpi.peu, Reservolre, and E levatod Tanks for Water Storage". All shop work shall 'us in strict accordance with, all applicable requirements of the above specification in its latest amended form, as jointly adopted by the American Water Works Association and the American Welding Society. 2, She Drawir:us: The Contractor shall submit to the Engineer four copies of al shop drawings, which drawings shall be in sufficient detail to refloat an accurate and complete description of the tank and its accessories. These drawings will be approved, corrected, or rejected by the Engineer with reasonable promptness, In case the drawings are re,jooted, Contractor shall re-submit other drawings with the required oorrations, Approval by the Engineer of shop drawings or other data sheets will not relieve the Contractor from furnishing materials and equipment of proper dimensions, eharaote r, quantity, and quality, in accordance with the Contract Documents. • 218-1 • 3. Materialst All materials used in the fabrication of the tank shall conform in all respeots to Section 2 of the A,W.W,A. Specifications Dloo-52 unless otherwise specified herein, Materials shall be of high grade and • quality throughout, Dished end shall be A.S.M.E. _ API Code as listed on page 169, "Steel Plates", Catalog 2340 Bethelem Steel Company, 1948, or approved equal. 4. fAkd t nt Welding, riveting and shop fabrication shall conform to the applicable paragraphs of A„d,W,A. Speoifications D100-52i except as modified by these specifications. All welding shall conform strictly to Section 8 of the A,W,W.A. Specification D100-52 (American Welding Society Spooifioation D5,2.52), Welds to withstand 100 p.s.i. Shop fabrication shall conform strictly to Section 9 of A.4.W.A. Specification D100.52. 5. Apgyrtenanoest as 2enerait The tank shall tv complete with the accessories described below. All flanges shall be A.S.A. 125# standard. • U, t Ins ido ladder shall be providad. Ladder shall consist of. 21 x x 3 anglo~s and 3/4" V rungs. inand let Outlet inch I.D.eflangedInlet eight Connections {inch Contractor I.D, flanged shall outlet tatltheX fib") • locations shown on the plans, d, kj wof~eotiont Contractor shall install four (49 inch I.D. flanged connection for blowoff, Location and dimensions shall be as shown on the Plans, e, Aoeess Manho7dt Contractor shall install twenty-four (24")inch access manhole, Location and dimensions shall be shorn on plans and shall be furnished with one (1) twenty-four (24")inoh A,S.A, 125# blind flange. f. LUm,09n 1 rl The pumping unit shall be controlled from a pressure float switch which shall, be mounted on the pressure tank. The controller shall be an Air-Ad Duotrol, 110 volts, A,C., with freezing manufactured y to 40tpaitandCturn o pump e off Controller when l pressure lreburn 60 psi. aches g. Pressure Relief Valve Connectiont Contractor shall install six (611) inch flanged connection for pressure relief valve, Location and dimensions shall be as shown on the plans. Flange shall be A.S.A, 125#. • • 218.2 6• P'Uio►z o surfaoes or ai outside surfaces shall be prepared P for"N in 0-10AU : All inaide and ae specified in A,W.W;A. Specification 0203-51~ by sand or grit blasting 7. Pei t a• 2Me.>r.t j All painting shall be performed in a workmanlike manner by experionoed workmen, and shall conform to A.W.W.A. Speoifioation 102.5gT, unless otherwise profided herein. Paint shall bo thoroughly stirred preferably b mechanical means before being removed from the containers and, in ord y or to keep pigment in suspension, shall be stirred while being applied, No oint be until the preceding coat has thoroughly dried. In addition teethe prime~liod coat of paint, both inside and outside surfaces shall receive two finish coats of paint. Finish coats of paint shall be in aooordanae with the painting section of these spea{fications. b. ELIM.C~~Al Red Recommendation D1 Ts Sectione$5..4,1Paragrapoil hs 5,4,2. sc to hallrbenused asWaW.A, primer for exterior surfaoes, Contractor shall apply primer using a vinyl wash primer followed with a seoond coat of vinyredload. The wash coat shall conform to Military Speoifioation MIL-0-15328A, Coating pretreatment (Vinyl Formula WP-1). The vinyl red lead shall conform to Military Speoifioation MIL-P_15929, "Primer, Vinyl Red lead Type", (Vinylite Formula XE 5295). Interior surfaoes of the tank shall be shop.ooated with one (1) coat of MRTOL Hustinhibitive Primer No, 621. 8. Iaspeotion of ,M riaji The Owner may require shop inspection by independent testing laboratory, the cost of whioli will be paid by the Owner. 9 ' Testi{~ for Leaka; Upon completion of the pressure tank and prior to the Owner's acceptance, the tank ehall be filled with water and tested to a pressure of 100 p.s.i. Any leaks which are disclosed during the test shall be repaired. 10, affluent Wet S,y~&,qLM- ar 3 All valvos, hydrants, hose bibbs, oto., which are connooted to lines on this system shall have attaohed to thom, as detailed on the plans, an identifying tag reading "Cffluont Water". The tape shall be fabricated from Lamiooid ,0 5.inoh thick with letters 3/8-inch high, white on black baolcground, END OF ITEM 218-3 • xTrtLJO~ 2z~ _ urtPlrrO r uQ TPME;rJr A. 9,eneal: This item covers the installing of the various pumping units whioh are to- be furnished b the Owner. • in Section V, comprise three (3) raw sewage epumps iand thwhich are ree (3) return ed sludge pumps, This Contractor shall furnish all additional material rewired for a complete installation as shown on the Plan and that is not included in Section V (Contract No. 61_3), Attention is called to the fact that there are various other pumping units to be furnished and installed as specified in other items of Seotion Il of these specifications. D, ~a__ 11, a_ tioni Pumping units shall be installed in aooordanoe with the manufacturer's recommendations and with details shown on the Plans. All piping, valves, and electrical work shall be as specified in other sections of the Specifications, • END OF' ITEM • • 219. 1 • a ITEM NO, 220 _ PLIIC~ VALVES A. QWS_r „l: This item covers the furnishing and installing of all plug valves required for the work, Plug valves shall be installed as shown on + the plans and in aooordanoe with these specifications, They shall be DeZurik, semi-steel, eooentrio plug valves, or an approved equal. The wrench nuts or levers for all valves shall turn count(jr-olookwise to open the valve. All flanges shall be 125# ASA steel flan,;os, conforming to the total ASA Standards. Valves shall have rubber faced plugs, The required valves, 6" and larger, and certain pertinent data is given below. This list is not guaranteed as accurate to the Contractor, but is given to facilitate description of the various valves as an aid in plan take- off, The Contractor shall be responsible for furnishing extension stems of proper length {where required), valve boxes of proper size and length, and othor required accessories. The 411 and smaller valves, although not listed, shall be governed by these apeoifioations. All valves, 14" and larger, shall be provided with worm gear operators, Valves for buried installation which require worm gear operators shall be provided with Fig. 340 totally enclosed gear boxes, All three-way valves for buried Inatallations shall be provided with stainless steel paoking gland sleeve p- .,,,:,)tors and with Oil-Lite bushings in the cover and boor. Three- way valve8 shall be of type to provide complete shut off in both directions, ` E. Valves Requirods I Loc Number CL to . Re r d Size D tion_ Qp 1. Primary Sludge Pump Suotion and Disoh. 3 6" Lever Op.-Flg. 2. Supernatant Drawoff 2 6" Same as Item 1 3, Supernatant Drawoff 1 6" Chain Handle Lover Op, F1ang. 4. Haw Sludge at Digester 3 6" Ext.Stem-Nut Op. 4+-61+ Flg.-Valve Box 5. Return Sludge at Nut Op.-Flg. Aeration Basin 2 6" Volvo Box 6, Return Sludge Lit Aeration Nut op..}[,E, 2 6" Valve Dox 7, Waste Sludge 1 6" Same as Item 6 a• Emorgeney Rot. Sludge 1 6" Same an Item 6 9, Primary Clarifier Scum Line 1 611 Same as Item 6 220-1 Item Location Number CL to RePUJM Size D~eQription Oo-XUL 10, Orit Chamber Drain 1 6" Sumo as Item 6 ll, rinal Eff. Rociroulation 1 6' Is'xt,Stem-Nut.Op. 181-6n H.C.-Valve Box 12. Pr9.mary Sludge to Digester 11 6" 3-Way, Lover Op,r1g, 13. Primary Sludge to 3-Way, Ext. Stem, 71-611* Digester l Err Lover Oper.,Flg, 14. Filtrate Line from 1 6" Sludge Drying Beds iamo an Item 13 69-410 15* Return Sludge Pump Sta. 4 B" Lover Op,-Flg, 16• Digester Sludge Drawoff l Cxt,Stem-NutOp. 100-6" 11.C.-Valve Box 17, Primary Clarifier Sludge 1 E3" Samo As Item 16 13'-6" 18. Primary Clarifier Sludge Z Bn Same As Item 13 1!i'-611* 19. Return Sludge Pump Sta. 1 10" Dover Oper., I11r. 19A, Return sludge Pump Sta, 1 10" same an Item 3 20. Return Sludge to 1 10" 3-'~Jay,Cxt.Stem, 51..9n* Aeration Basin Lever Opor., rig, Dougle Style Plug 21, Raw Sewage Lift sta. 2 12" Lover Op,-fig, 22„ Return Sludge Pump Sta. 1 12" Lovor Op.-rlg, 23. Reoirculation or Drain 1 12" 1,',vt.Stem-Nut Op. 170.6" H.C.-Valve Box 24. Aeration Basin Drain 2 12" Same as Item 23 79-6" 25. Return Sludge from 1 12" Same as Itom 1-3 21.'»10"* Final Clarifier 266 RAW Sewage Lift stn. 3 1411 L-vor Op...IPlg. 27. Raw Sewage Lift Sta. 1 16" Lover Op.-Flg. 28. Waste sludge to Primary 1 1610 5 fr Clarifier as Item 23 9 6 2202 Item Looa icn Number CL to _R0 uir, d Si _0 DMN G-Out 29. Return Activated Sludge 1 18" Same as Item 6 • 30, Grit Chamber By-Pass 2 20" Same as Item 6 31, Raw Sewage to Primary 1 20" Same as Item 23 120.0" (:larif.l.er 32, Raw Sewage to and from 2 24" Nut Opor., Fig. Grit Chamber Valve Box 33- Final Clarifier Inlet 1 2411 Nut Oper., Fig, 0t 2r' Ext.-Stem, Valve Box *Dimension. given for 3-way valves is from the center line of the valve to the lever operator, placing the lever 21-6" above finished ground grade. Valves shall be installed as detailed on the Plans, C XgLY cxes: Valve boxes shall oonsiet of .a top section equal to T.M. & S. 0 S 599 a riser section of 6" C,I, soil pipe, and a bottom section equal to T.V.I. & a. Cu. No. 4611 Valves shall be enoaeed in lean concrete up to a point that will, support the valve box. Valve box shall not be supported by valve, ,r 137. Valves shall be carefully handled and lowered into posi. tion by+ meohan cal egi,,ipment in such manner as to prevent damage to any parts of the valve. Valves shall. be pleoed in such position as .indicated • on the plans with the stem in a true vertical or horizontal position, and securely held until. ?.11 connections have been made. Flange valves shall be set in position ,nth the flange facing so that when bolted up there will not be caused an u:►due strain on either the valve or the connected piping. daeKets of proper material and thickness shall be placed in position as the valve is being centered. END OF ITEM • • 220.3 ITEM NO, 221 » GATC VALVI S A. Goneral: This itom covers the furnishing and installing of Irate valves. Gate valves shall be installed at the locations shown on the plane, Joint- ing of valves shall be as specified for piping an doeoribed under "Piping and Pipowork. D, Gatg Valyo: Gate Valves shall be of tho double disc, parallel seat, internal wedging typo, with iron body and bronze mountings. Valves shall be in accordance with the American Water Works Association Standard Spooi- fication for Gate Valves for Ordinary Water Works Sorvico", Designation C500_5AZT, All gate valves shall be non-rising stem and shall turn counter- clockwise to open. IJhere flanged valves are called for, the flanges shall be 125# ASA flangoe conforming to the latest AaA standards, The required valves, 4" and largor are i3hown heroinundorl however, it ahall be the Contractor's responsibility to furnish, where required, valves with the proper length of exten^ion stems, valve boxes of proper siza and length, nupports or brackets for stems, and all othor valve appurtenances requirod wherever shown on t1,o plans and required for the operation of the plant Valves emallor than four inches obal.l bo all brass, or iron body bronzo mounted, conforming to the requiroments of Federal Spooificntion C. Valves fteouire : • No. :[tern LooaticI'a Ronuired ize U,,,criptior, 1. Aoration Basin Spray 2 4" 150 poi working presnuro, Nut Op, _II,I.I. -Valve Box 2. 9ewago Pff,Pu,np Mor,h. 1 6" 150 psi working nresaw,e, 11nndwhool Ope ratod, flanged 3. Fire Hydrant Line 2 6" 150 psi worMnf, pressure, Nut Op. -Ii.r. -Valve Box 4. Sowago Pff, Pump Suction 1 S" 50 pai W.P,-Ilandwhsol Op.flg. 5. Plant fay-Pass 1 36" 50 psi W,P...Nut 0p,-11,1J, Ext. Stomp 101..10" C,L, to Nut,- Valve Box. D. Installation: Valves shall W carefully handled and lowered into position by mach,anin al equipment in ouch mannur as to prevent damage to any party of tho valvo. Valves shall be placed in such position as • 221-1 indicated on the plans with the stom in a true vertical or horizontal position, and securely hold until all connections havo kxten made. Flange valves shall be not in position with the flango facing so that, when bolted up, there ;:ill not be caused an undue strair on either the valve or the connected pi.pil,d, Ciaskots of nropor material anti thickness shall be placed in position as the valve is Using centered. L. Va.v Hexes: Valvo boxos and inotaltation of same tihall, be as spooificd in Itom No. 220 Plug Valves. END OF ITEM r • i 221-z • IT. N0, 222- CHECK VALVES A 02 nera-t The Contractor shall furnish and install oheok valves at loom. • tions shown on the Plans, Check valves shall be installed in such a manner to prevent damage to any parts of the valve and to prevent any undue strain on either the valve or the connecting piping. The required valves, 4" and larger, are shown hereinabove, The Contractor shall verily this list, howevor, and it shall be his responsibility to furnish where required, check valves of the props), size and type required for the operation of the plans, H, Ch_, eok Vg,~_Renuired~ Ttem X,coation Nunbor S e 1. Primary Sludge Pumps 2 411 2. Sewage Effluent pump 1 611 3, Return Sludge Pumps 2 d;, 4, Emergenoy Sludge Pump l 10„ 5. Raw Sowage Pumps 2 1211 6, Raw Sewage Pump 1 14,E • C, kesor 344 iotiont Check valves shall be swing type check vulvas similar to lows F-5 tinged Ends, Outside Weight and Lever Type, or equal. The valves shall be designed for 150 poi working pressure and 300 psi hydro • static test pressure, Flanges shall be 125# 49A flanges, Valve body shall be oonstructed of first quality cast iron, The d.iso shall be oonstruoted of cast steel or oast iron with bronze faoinge, Seat rings shall be made of bronze and shall be renewable, END OF ITEM • 222.1 • ITEMIR). 22 -HOIS'TIN'G f-'Pu MfiN4' AND SUMP PUMP A. tioistin Equipment s 1. ralt The Contractor shall furnish and install one (1) two ton hoist in the Raw Sewage Pump Station and ono (1) throo ton hoist in the Blower Building, 2, Hoistst The hoists shall be "Shaw-Dox" Standard Army Typo Trolley Hoists as manufactured by Manning, Maxwell and Moore, or equal, The two ton Haw Sewage Lift Station hoist shall have a geared trolley to operate on an 8 inch I-beam (18.4#). The hoist shall have a 12 foot lift, The three ton Blower Building hoist shall have a grlaved trolley to operate on a 9 inch I-boam (21,8#). The hoist shall have a 10 foot lift. All motions of both hoists shall be aeoompliahod by pulling (in ondless chum in easy reach of the floor. 13, Sumo Pums)s The Contractor shall furnish and install one (1) 20 OPM sump pump oomploto with base plate, uhaft, motor, motor mounting, float switch and discharge piping and fittings an shown on the Plans. The pump shall be Aurora Pump Company, Aurora, Ill„ type t1SM or an approved equal. The pump shall operate at a static head not to exceed fifteen foot. Motor shall be 120 volts, single halo, GO oyeles, Sussn numc~ is located in the lU.y~oL uf' RwSw,,a 1Ia Stra, tion. m END OF 11VI A 223.1 ITEM NO, 224 . PI,UMBIuc; A. boneral; This item covers the furnishing of all labor, materials, and equipment required or necessary to the complete installation of all plumbing required. The work comprises the following: (1) All plumbing fixtures shown and/or specified (2) Fresh water piping (3) Soil, waste and vent piping (4) Traps, drains, valves, hangers, olamps, supports, etc., as shown and/or specified, B. Ordinance t All work shall be dune in accordance with Plans and Speai catty o and shall meet the rules and regulations of all authorities having jurisdiction over same. Should the Plans and Specifications differ from the required minimum standards as sot out in any governing ordinances, the ordinances shall govern unless the Plans and Specifications exceed the roquired minimum in which case they shall govern, 0. Exaavatingand Baokfillinrtt Contractor shall do all excavating and baokfilli ng made necessary by his work. Trenches for underground pipes shall be excavated to the required depth and bell holes shall be provided to insure uniform bearing. Excavation below grade shall be baokfilled and tamped until firmly compacted, whore rook is encountered, the trench 0 shall be excavated to a grade three (3) inches below the lowest part o£ the pipo; the pipe shall then bo laid on a three (3) inch deep bed of sand or gravel and the trench refilled to grade and compacted. Trenches shall be sheathed, braced, pumped or bailad as may be necessary to protect the 0 work and adjacent structures. Do Soourin and Su rti of Pi t All pipe shall be supported from tho bui d ng structure by moans of approved hangers and supports. Piping shall be supported to maintain required grade and pitch, prevent vibration and provide for expansion and contraction, All hangars shall be secured to approved inserts wherever possible and practicable, F,x. pansion shields may be used in special oases only, hanger inserts shall be not in place before concrete is poured, Field drilling whore required shall be done by the Contractor, In no oaae shall the spacing of the hangers be groater than the followings llovizontal cast iron pipe, not more than 5'-0" apart Wrought iron or copper pipe - 101-011 on centers for pipe 1-1/1411 larger; 01 for pipe amaller than 1-1/41 Vertical lines shall be adequately supported at their basos eithor by a suitable hanger placed in the horizontal. line near the riser or by a base fitting not on a podeatnl or foundation And from each floor slab by means of approved olamp typo support, hangers for piping two (2) inahoo and smaller shall be of the split cast ring typo with fastening device. Hangers for piping larger than two (2) inches shall be of the adjustable olevis hanger typo, Banger rods shall be 3/811 dinmater and shall have machine threads. Draekets of approved typo may be used along the walla. 724-1 • 1. Pipe Sleeyosd The Contractor shall furnish and install sleeuas in Conn cotion withra11 piping passing through foundations, walls, slabs, partitions, or other building construction. Sleeves shall be set in concrete construction before pouring, The Contractor shall be rosponsible for the locating, setting and anchoring of sleeved in a substantial manner so that they will not become displaced. All slaves installed in vertical position shall be oonstruoted of No. 26 gauge galvanized sheet iron. All sleeves installed in hori- zontal position shall be constructed of standard weight steel pipe, or extra heavy cast iron soil pipe, sized to leave at least 1/2 inch clear space all around pipe passing through some. Sleeves in exterior build- ing walls below grade shall be installed with approved elastic caulking between sleeves and piping to make it waterproof, I'', LIa hinge Each plumbing pipe projecting through rooff or water- proof deck shall be flashed with sheet lead weighing not less than four (t~) lbs, per square foot. away fromlthhinp pee olbexflaasshedt and s shall than be O turned inches into a top directions a distance of at least one (1) inch. O i;sout peon i When uncovered, exposed pipes pass through floors, • finisd wal s or finished ceilings, they shall be fitted with neat, heavy spun or stamped steel osoutoheons firmly secured to cover amply the sleeved o).rnings for the pipes. E soutcheond shall have a painted finish to match the final finish required for the pipes on whioh in- stalled, unless otherwise provided. Usoutchoons for finished fixture conneotions and fixture trimmings shell bo furnished with Plumbing Fixtures. It. g n s st The Contractor shall keep all ends of piped, including thoso extending above roof, drains and fixture branches closed with caps or plugs so as to prevent dirt or building material from entering pipes and traps during construction. I. T Fina1 Fxnansion of Pi7or Swing ,joints, turns, expansion loops or long off-sots sna1I be provided wherever shown on the plans and wherever also necessary to allow for expansion of piping within buildings. Broken pipe or fittings, due to rigid Connections munt be removed and roplaned at the Contractor's expense. Swing joints shall be made up of not leas than four (4) fittings on horizontal mains, at least three (3) fittings on risers and on run- outs from mains to risers, for all screw pipe, J. Sanitary Dt'aincer Furnish and inatall waste, soil. and vent lines to aerve all the fixtures located in the buildings, ThosE shall be in. • stalled in accordance with the local Plumbing Ordinance, but in no case shall the pipe be smaller than the duos shown on the drawings. • 224..2 A All soil and waste linos throughout the building shall be extra heavy cast iron pipe with caulked oakum and lead ,joints. All vent stacks shall be heavy cast iron soil pipe. Re-vents of small size and isolate6 small vents may be galvanized wrought iron, Arco or Walworth C.M.I. pipe, if same is approved by the Plumbing Inspector, All wastes and soil pipe shall be run as shown on he plans, All horizontal soil pipe ;;hall be laid on a uniform grade of 1/4" fall per foot wherever possible, and never less than 1/8" per foot. Cast iron soil pipe shall be extra heavy and shall conform to the American Standards Association Specification ASA A-40,1, Fittings shall be of tine same quality cast iron. Joints shall be made by means of oakum or hemp, thoroughly caulked in place, followed by pure molten pig lead, well caulked, brought up to the face of the hub, K, eat 'tees and Cleave noutst A test tee, with eloanout plug, shall be ins al ad at t foott of every soil stack. Cleanouts shall be installed at each change of direction of soil waste and drain lines and, in straight rune of pipe, shall be installed forty (40) feet apart in sanitary drainage lines. Cleanout plugs shall be of heavy oast brass or bronze, shall be fitted with countersunk heads where finished floors occur, and shall be of the dame size as that of the pipe in which they are installed except that oleanouts larger than four (4) inches in diameter will not be required. O L, Pining and Acoessoriest 1. aone_rals All pipe shall be properly reamed after cutting and r threading and sand shall be cleaned before installation. Nipples shall be n£ the some material and composition as the pipe in which they are in• stallod and shall b e extra heavy when unthreadod shoulder is leas than one (1) inch. No running thread nipples will, be permitted. 7. Unio i Union connections in ferrous pipe two and ono_half (21) inches in iometer or smaller shall bs of malleable iron with bronze seats and ground ,joints. Union connections in non-ferrous pipe two and one-half (21) inches in diameter or smaller shall be ground ,joint, brass body, bronze seat unions. 3, Contr V ire i Control valves for water service shall be Scott, Jenkins or Crane rompany0a and shall bs equal to Scott Manufacturing Company0a bronze gate valves, Figure 30M, Water lines to fixtures shall be valved, All control valves on main distribution and branch lines Enall be located in Accessible locations. Valves for underground water piping shall be bronze or brass with double discs and ahall conform to tho requirements of the American Water Works Association. Volvo stems shall have two (2) inch square nuts and, unless otherwise shown on the drawings, each valve shall be installed in an approved cast iron, ad,juatnblo shaft, valve box. i 224-3 • 4. Rose B qs Contractor shall furnish and install hose bibs equal to Crane 8-340, brass where shown, • M, I'l_umbin F to Furnish and sot according to the manufacturor4s dirootions following fixtures. All fixtures shall be of first quality and any fixture or fixtures marred or broken before the time of acceptance of the completed contract shall be replaced with a new fixture or fixtures, Carefully proteot all fixtures with heavy paper wrappings. Fixtures shall be carefully and thoroughly cleaned after all painting and cleaning down of the building has been done. All fixtures shall be Crane, Kohler, Amerioan-`ltandard, or El,jor, equal to the Crane plate numbers specified bolowi (1) r Water closet shall be Cranu No, 3- siphon jet with 3-570, gallon tank, 9.361 3/8" an le su 1 207 "Banton" stop, and Church No, 345»C black seat. g pp y pipe and (2) Lave Lavatory shall be Crane No, 1«495, wall hungt No. riser. 2Dimensonsaarew20, xf18", witho01splash backstop and flexible N N1 . - ) ~I Floor drains for Return Sludge Pump Station and Primary • Sludge Pump Station shall be three (3) inoh outlet, eight (8) inch diameter grate strainer, oast iron drains equal to dosam Manufacturing Company's Series 6701' deep pattern backwater valve, Floor drains for the Blower building shall bethree (3) inch outlet, nine (9) inch perforated nickel. • plated brass strainer, oast iron drains equal to Josam Manufacturing Company's Series 100, I ND OF x1'laM 224.4 • ITEM NO. 22" MISCGLLANE0US I2'[ MS A. sire P ants Fire hydrant shall conform in all applicable respects to • "Speoifioations for Fire Hydrants for Ordinary Water Works Service" of the AWWA, (0502), and shall meet all requirements of the Texas State Fire Insurance Commissioner. Hydrant.shall be Mueller "Improved" fire hydrant or an approved equal. Hydrant shall conform to the hydrants now in use in all respeots, including threads for hose connections, operating nut, direction of operation, etc. Hydrants shall have a 5-inch minimum valve opening with a barrel of approximately 7-inches internal diameter. Hydrant shall have hub or mechanical joint for connection to 6+' C.I. pipe. Hydrant shall have two 21-inch hose nozzles and one 4j inch stoomer nozzle. ;Installation shall be as detailed on the plans. B, i',re. educe Relief Valve for Hydros. neumatio Preseu a ki Furnish and install at ooa ion indicatod on the p ins, a - no f angod pressure relief valve. The valve shall be capable of passing 500 OPM with a head loss of approximately seven feet. Valve shall be for a bottom inlet and side dis- charge and shall be similar and equal to Golden-Anderson Valve Speoialty Co, Figure No, 66.D or approved equal. Valve shall be so designed to release at 100 psi and shall be suitable for field adjustment, • C. IEmQn~y U~~naitte_Fuol Syv storm Furnish and install a fuel system for the emergenoy utane engine in the Raw Sewage Pump Station. The system shall consist of a 500 gallon butane tank complete with metal support for above ground installation; all necessary valves, controls, and safety devices; • and the necessary size and length of copper tubing for connecting the tank to the engine.ar reoomo nded by the engine manufacturer, The tank shall be installed at the woat end of the thaw Sewage Pump Station. The tank shall be constructed in accordanoo with all applicable A.S.M.H. and/or City of Denton codes for tanks of this natura. Pointing' shall be in accordance with the painting, section of these speoifications, OND OF ITEM • 225..1 • T z_ Imo- AIiCI1ITI CT~J~#t "UE C IRU7 JNO. j IA 5 R A. co s The work covered under this aoctiorl of file specifications in. cludos all labor, matorials, oqu,ipment, and sorvicos nooossary for or reasonably incidental to tho completion of all brick work, the backing, block partitions, oto., shot-m or indicated on the drawings by notes or by hatching or specified heroin, B6 Wqr~AJ.Ai 1. rase brick shall be Aome-Denton 446 volour. All face brick shall be of modular dimensions, uniform in site and the exposed sur- faces shall be free from cracks, spalls and other imporfootions, 2. ZQMMn.,jlrj&i Common brick shall be hard-burnod, merchantable, stiff-mud or dry-grossed standard brick which will comply with the ASTII Specification 0-62-50 for drado NW clay common brick. 3•Qx~t@_Blo~e The oonoroto blocks shall be of vertical cell structural lightweight stoam-ourod oemont blocks, having an unaoorod, fine pebbled surface, free from chips or other defects. Blocks shall include all special units as may be required to form all corners, laturns, openings • and offsets, Provide ooneroto brick as shown, All exposed corners except window jambs shall have l" radius. 5. ~MiExposed surfaces shall be glazed or areas indicated • by note on to rooeive "glazed blocks". The glazed units may be "Spectra~gstoorat" lightweight oonoreto units, or Acme-Elgin "Olasstilo", shade 6050. The concrete blocks shall moat all requirements listod in paragraph 4 above, Colors will be selected by the Enginoor, Shop drawings shall be submitted to the Digineor for tho typo of glazed units ohoson. G. .YgllS gDmo s Portland bomont shall be as specified under Section, "Concrete for Structuros", Mi to cement must bo used for color softon'Ing in mortar for light br ioke and the units, 71 A~t7 rg?p ,s 0hall be i ithin tho "non-staining" olassi- ficaton of the limcstono industry, or othor ostablishod agency aocoptablo to the isrf;ineor, and shall moot all of the roquiromonta of the Standard )poeifiration for Flom-ntaining Cement of tho American Society for Tooting Materials. it 'call be equal to '"agnolia" non-staining oomont, or Port Scott "Realito". 81 a_ _-,rlnroofli I The fnttorproofing specified for Class A mortar shall be Mastor Buildor+s "Omloron", which shall be added to the mortar in the amount of 1 pound to oaoh cubic foot of comontitious material (cement, • hydrated lime, limo putty, or masonry oomunt) in the mix in strict accord- anco with the manufacturer's apeoification. • 901-1 1 • 9. Lima f Lima shall be equal to I'Dittlingorm" or to "Austin White Lime", All lime shall. be made into a stiff putty before being used in any mortar. Putty made from hydrated lime must be soaked for 24 hours, from • pulverized lima, shall thoroughly be cooled slaked n for cure for loss n than loss two (2) wooke, 10, 5,=1 Sand shall be wall gradod in size, and shall be free from organic matter, ZJhon dry, at least 9'e shall be retained on a No. 100 siovo, and 80`) on a No. 50 siovo. It shall pass a Wo, 8 sieve, and at least 9", shall be retai.nod on a No, 16 sieve, 11. "rater, "ater shall be frosh, clean and froo rrom injurious amounts of minorals or organto substances, 12. A~4X's-.4I1 . TUAI Anohoro and ties shall be heavily go'vanized metal.. Shoot, metal shall be at toast sovon-eighths (7/1311) inch wide and not lighter than 20 gauge, 14ire shall be at least No. 11 gauge, and ties of wire notting shall be strips at least eight (a") inches Zang, of one- half (1/2 ) inch mash, No, 16 gauge wire fabrio. 13. Masonrv__Rq prnrn nn1 Masonry reinforcing shall, be Du r-O-Wall, or an approvad equal. • C, Samr)loai V.o Contractor shall, submit tho following aamplos to the Engineer for approval prior to delivery of any materials to the Job sitot a. Waco brick - 4 of each color b, Glazed units 2 o, Anchors and ties 2 of each typo proposed for use r1. llandlin~ an , t All masonry materials shall. be handled in a mannor to prevent undue breakage or ohi.ppi.ng. Mortar materials shall be delivered and stored in the original packagos, plainly marked with the menufaoturor's brand name, Mortar materials shall bo stored in waterproof aheds or on platforms raised free of the ground and protectod by tarpaulin covors. All glazed materials shall be shipped in individual cardboard cartons or trays. The material shall not be romovod from those oF.rtone and shall be properly covered until it is placed in the wall, Glazed walls shall be protected at all times from the work of other trades. r,'` ' u=1149Z..s~ : The Contractor shall have in uhargo of the masonry work at all timon during construction a compotont foreman thoroughly expor- lanced in this typo of tho wurk, and under him there shall be omployod at loant one (1) oxporionood man in chargo of mortar mixing. All men omployod must be skilled and oxporioncod. )PO o t 1+ ,gjt All masonry shall be lai.d plumb, true to lino, with level and accurately spaced courmos and with oaoh course breaking joints with the • 301-2 course below. Bond shall be plumb throughout; corners shall be plumb and true. Unless otherwise shown on the drawings or specified, the apacos around built-in-itoms shall be solidly filled with mortar. Work required to be built in with the masonry, such an anohors, wall plugs, and access- orios, shall be built in as the erection work progroscos. All scaffolding necessary for the installation of masonry shall be provided, maintained, and moved as required and shall be available to other trades required to execute work in connection with the masonry. All scaffolding shall be constructed in a safe and substantial manner and maintained in strict accordance with the requiremontn of City Ordinancos, State Laws and insur- ance rules and regulations. 2. Bricks All brick shall be damp whon laid. Brick shall be shoved into placo, not laid, in a full bod of mortar. All horizontal and vartic&l joints shall be completely filled with mortar when And an laid. hooRyI-ly ~4t~L2L-1?l Qk_An~1i~ . X11 ~"bLawww' comnlotoly full o a as the hill ~jp -laid . Spaces between face brick and concrete shall likowiso bo slushed full. Nail holes and other imperfections shall be pointed to,provent entrance of water. Vertical joints shall be all of the same width except for inconspicuous variations required to maintain the bond. All face brick shall be laid in Class A mortar as hereinafter spocifiud, All oxposed joints shall be tooled to a donso, concave surface. Faso brick shall be laid plumb, straight and true to an exact lino, and, in a workmanlike manner with all soldier oourses, rowlooks, headers, etcow properly placed as shown on the drawings. Mortar joints shall be of a uni- form thickness, such that generally three brick and throe joints will work nominally 8" vertically and one brick and one joint will work nominally 8" horizontally. Joints shall by out off flush and then smoothly struck r with a largo diameter tool. Faso brick must be anchored to concrete grade beams, and concrete walls, with approved galvanized corrugated metal anohors, placed as specified under "Concrete". Face bricks Phall be bonded with the backing by means of masonry reinforcing every sir (6) eoursos, or by masonry bond as shown on the drawings. 3• S1B .91) ni Provision shall be made for all special units as may be required to form all cornors, returns, openings and offsets, and maintain proper bond throughout the length of the wall. Mortar joints shall be throe-oighths (3/8") inch nominal thicknoss, except glazed face joints which shall be one-quartor inch if spectra glaze units are used, with full coverage on vertical and horizontal taco sholls. All head and bed joints shall be filled and made tight. Vertical joints shall bo shoved tight, All exposed joints shall be tooled to a denso concave surface, The surfaces of the walls shall be kept clown and free of mortar splotchos, and all joints are to be made with a straight clean lino. 4htare conduits or pipes occur in masonry walls, same shall be "throadod" in as no chasing of the walls will be permitted, All partitions that abut other walls shall be bonded or anchoredr thereto not legs than ovary two (20) foot in height, Partitions or furring enclosing pipe spaces shall be built after the pipes are in place and have been tested to the satisfaotion of the Nng;l- near, and proper provision shall be i%do for tying nuoh partitions to pro- coding connecting work. Suitable and proper rooossoo shall bo provided for built-in cabinets and junction boxon. The exact location and size of • 301-3 ! all such recesses, etc. shall bo as required by tho moohanical equipment. Metal work, whore roquirod, shall bo built in as tho tnrk progrossos. All the partitions and furring of ovary kind must be thoroughly anchored in ! a most substantial manner to all, abutting surfaces, Wiro loops shall be placed in prooodinC the walls in which wire can bo attached and axtendod into the h-vi.zontal ,joints of partitions and furring,, which attached loops shall be not more than two (21) foot apart in hoight. Likowiso, all metal busks, finished or rough, shall bo securely anchored into the masonry, partitions and backing as it is built up, hollow meal door framos shall bo solidly filled with grout. Dur-0-14all reinforcing shall he used in every third course of all lightweight cement block partitions. Ni torior wall blocks shall be laid in Class A mortar. Interior partitions may be laid in Class L mortar. 0. Mortara Proportions spooifiod are in oqual parts by volume. Ono (1) sack of portland cement (94 lbs, not) shall be connidarcd equal to one (l.) cubic foot. 1. Class A- Mortars 1 part portland convent 1/2 part hydrated lime or limo putty 4 parts sand Flatorproofod as heroin specified 2. ,Q,kpu Mor at: Same as Class A, except not waterproofed ! 3• MiXinga All mortar must be acouratoly proportioned and, thoroughly mixod by hand or by machine to a uniform color. 't'ools and mixing boxos must be kept clean, and no mortar which is partially set shall bu retom- pored for use. 11, & "nLi Lintols shall be reinforced masonry or stool anglos, or can- orote, as dotailod on the drawings, In prooasting reinforced masonry tin- tsls, care shall, be takon to insure complste filling of calls with m(.rtar and true alignment of the lintol with uniform mortar joints or exposed surfac aa, Reinforcing rods shall extend full length of lintol, and lintols shall have a minimum of eight (U") inches bearing on cash side of opening, Lintols shall to adequately cured before handling,, and atornge. Is ' a 4BA. 19_.'Crima All items of stone work indicated on tho deawinp,s shall be precast atone of the color solooted by the: Lnginoor. MAJUIl,,tl1,r Cast stone shall be made from fine silica sand with marble granite, quartz or liidostono aggrogato mix of two and ono-half parts material to one part cement. All stone shall bo steam cured and shall be equal to that manufaeturod by McDonald Brothors, 2308 t!, Vickery, Fort Worth, Toxae. All piceca shall be true to dimensions and profilos, with sharp, straight edged. Moldings shall be sharp, true and oentinuous at joints. An intogral watorproofinr and one coat of silicon watorproofing 301-4 shall, be used on the face of the stone before delivery to the ,jobsite. Stono shall be properly reinforced and shall have a compressive strength of 5,000 psi at 28 days. 2.Shop drawings and samples shall be submitted to the Engineer for approval before any stono is manufactured. 3. Handling and 8to rasa: Caro shall be exercised in transportation, handling and storage of stone. Any stone broken, cracked or chipped will be rejected. Stone shall be stored off the ground and shall be protected from dust, dirt, grease and weather conditions at all times. 4o Ergetion: All stone shall W securely anchored and dowelled to masonry and concrete work with approved galvanized metal anchors and brans dowels, flortar for setting stone shall be one part White Stainless Portland Cement, one part hydrated Lime and four parts .Sand. All stone shall be set in full. beds of mortar and all head and cross joints grouted full as the stone Is laid. Top and face joints shall be raked out 1/2 inch deep and filled with caulking compound colored to match stono, Clear; down stone with water and stiff fiber brush and point all work, All stone, after oloaning, shall. be waterproofed i4th one coat of silicon waterproofing. J. Anc : Tics horoinbofora specified shall extend at least 4" into masonry backing and to within 1/2" of the face of brick or inside furring, and similar anchors shall extend into parti.ti.ons r•,t loss than 811. Anchor age to concrete structural parts is provided for under "Concret.a". K, ti. and Patchinr~s Cutting and patching of masonry required to accommodate the work of other trades shall be performed by masonry mach- anios. L. Protgotion: Surfaces of masonry not being worked on shall be properly protected at all times during the construction operation. At such time as rain or, snow is irvainont and the work is discontinued, the tops of exposed masonry walls shall be coverod with a strong waterproof membrone, well secured in place. Any damaged block shall. be removed and roplacod. M. urin : In hot, dry Breather, masonry walls, oxpoood to wind and sun shall be sprayed several. timos a day with a finr, water, spray. Do not spray until iortar has set, sufficiently to withstand erosion. Spraying, will k, required only for six (G) days following laying;. The necessity for spraying shall be as detormi.ned by the Lltgineer. 14• Pointin" an Cl a ipg.: At completion of the work, all (roles in joints of exposed masonry surfaces shall ho filled with mortar and suitably tool.od. Cement pointing around steel frames shall, bo done with Class A mortar. All mortar drippings must be removed from projecting surfaces of whatever kind, and the entire surface of all oxposod face brick work shall be thorouphly clot,1d, using a solution of Drano in water (1 can to one gallon) and then rinsed with clear water. Spoctra-glazo units shall be cloanod with a mild 3~~1~5 cleaning compound or detergent after which the wall shall, be washod with clean water. Proper protection of all atone and ot,hor surfaces shall be provided to prevent any cleaning solution from coming in contact with atone work, The Contractor will be hold responsible for any damage to finished stone work, or any othor .finished surfaces, which may result from his opera- tional and on completion shall remove all rubbish, leaving the premises clean and his work in first-class condition and undamaged, Un er no oireum- dt8noes WUI acid be 'and-in clloaninr tile or light .g.,4lor~~l bricks. END OF ITEM • • • Sol.-G 0 zero, 10a . I,rAmE pROUP r11c Awn aUZMG_ A. Scn The work required under this section of the specifications ' includes all labor, matoriala, equipment and services necessary for or reasonably incidental to waterproofing of door and window heads, window s117.9 grade boams and other places= and caulking all outsido door frames all around. The caulking of atone ,joints, where required, is specified under that section of the specifications, but shall bo done as a part of this section. B. a is : Each typo of waterproofing, and caulking compound shall be submitted to the Engineer for approval prior to its use in the building. 1. ~luprano Wa.erprygCs Membrano waterproofing shall consist of two layers of 154 saturated felt and three coatings of coal tar pitch., Materials and application shall be equal in every respect to the Barrett Specification. iJ n Q Sil ._S1 t~ 4; Ilindow sill v-,torpron'inr shall con- siat of asphalt saturatod cotton fabric weighing not loss than 12 ounces por square yard on an approved asphalt plastic cement. 3• F' io_.i P`~l, 1w In lieu of the mombrano and window: sill vv.Eer- proofing apecified above, the Contractor may use Norvastral Seal-Prof if»n as manufactured by Rubber P: Plastics Compound Company, lno,, Now York City. 4. S is np Compound: Caulking compound shall be light colored, elastic, nonstaining and waterproof; it shall not slump in hot w,oather 0 nor become brittlo in cold weather. It shall not stain stone nor corrode copper, shall bo mixod to the propor consistency at tho factory. Caulking compound shall be Armstrong's, or an approved equal. C. &n.rz t or Apply a continuous mombrano waterproofing treatment oonsiating of two thioknoscos of 15# saturated folt and throe coatings of oval tar pitch over all window and door oponings as indicated going d beyond ,jambs, bohind and undor atone, stone bolt ooursos, through wall flashing, and other oij4L ar,p3qDZ,,qas shown on the drawings. 5oe option in sub-paragraph "14' above, Surfaces to which materials are to be appli.crl shall ho froo from cracks, holon, pro,jeotione and conditions that would prevent complete adhoaion of the waterproofing, 2. Window Sill tdn+.~,~,N~ I All window sills throughout shall W waterproofed in accordance with typical detail and as followst First tro?Aol onto the top of brick a hoavy, uniform bod of an approved asphalt plastic cement, and bod into same one layer of asphalt saturated cotton fabric. Fabric shall be out to proper longth, lapped at all joints, and extend same not less than on each side of masonry opening. Fabric shall be applied without wrinklos or buckles and after some is in place 302-1 ♦ apply an additional coat of asphalt mastic cement. Caro shall be taken not to* injure the waterproofing eourso, either during application or after dryiandofreetfrom lors©c~particles. waterproofing nin caub-paragraphe11411 above# • turer's prinnt~grecommendati recommendations. Surfaces i of acoordanoo stone or with the n to abo in contact, with the caulking shall be cleaned and eoatod with white shellac or a eo orlessi, transparent waterproofing before using the caulking. Whoro a suitablo mortar back-stop has not been provided, the back of joint grooves shall be packed tightly with rope yarn, Caulking in oints shall be a mini- mum of one-half (1/29 inch in depth and ono-quartor ~1/4") inch in width, Caulking shall be driven into joints to force out all air and solidly fill the groove and shall be free of wrinkles and uniformly smooth. Caulking shall be provided in the following locations: (a) Heads, Jambs, and sills of all window frames M Around exterior door frames and other openings in masonry Under all e,ctorior thresholds - full bed (d) Other locations as required for waterproof construction D. C].oanj31g: All surfacoo marred by smears of caulking compound or other blemishos shall bo thoroughly clcand prior to aeceptaneo by tho ()yln(,,r. • P111) OF TIMIN i • • 302..2 • T7 i9~,0, 30__- HOOF DECK A. t'oo e; Idork to be done under this section of the specifications In- chides tho furnishing of all labor, materials, otc., neeuosary for or reasonably incidental to in;;talling poured roof dockn, including aub- purl.ir,.a and form boards. 14 htweight concrotc must be placed by an appli- cator approved by the manufacturer. B. rtateri,~l.g; 1. ►b-PUr jMj6 Tho stool sub-purlins shall be of the size indicated on the drawings and shall be cut the proper length for bearing at each end, Sub-purlins shall be given one shop coat of oil..baso paint. 20 Formboardsi The permanent formboards shall, be ono (111) inch thick (unless otherwise noted on the drawings) U.S. Gypsum Company Ayroform Form- Board, or approved equal, 32 inches wide, of the length required. 3. orrjng Moghht Reinforcing mesh shall be galvanizod wolded wire. No. 12 wires, spaced four (411) inches O.C., shall be run porpendicular to sub-purlins and No. 14 gaugo wires, spaced eight (a") inches O.C., shall bu run parallel to sub-purlins In poured docks. 4. Lish&Xoi bt ConW,&.; Lightweight concrete shall be Zonolito Con- croto Aggregate meeting ASTM C322-54T, Portland Comont Typo I, II, or III ASTM C-150, admix supplied by aggregate manufacturorg and clean water. Mix shall be ono bag cement to four cubic foot aggrogato plus proper amount of water and admix. M C, Intal=t 11 `P J.,iM*' Place and wold each sub-purlin to each main purling joint or boam at each contact point, using 1/4 inch fillot welds placed on alternate sides of oub-purlins. Ono (1") inch stool toes shall be used for support of all, cross joints in formboard. 2. L,(?oboaXS1,2% Place formhoardn on flangos of nub-purlins with all ends or cross joints auppo"Ud by one (r) inch tou nucti.ons. Forms ahall fit neatly on all four cd{;cs. 3, j?p;~~fol'oinz>t Ends of roinforeing mu h shall txi latipud not loam than six (6") inches. lidos of mesh aro not to be lapped. 40 OnolIt_o_ on c et The Zonolito concrete shall be mixod, poured, and screoclod in accordance with the manufacturer's instructions, The thickness of tho concrete shall be as shown on the plans. Four all drain- ago fills as shown. It shall not be placed F;hen outnido temporaturo is lower than 40 dogroos F, r ,303-1 • to kcop it from shall or protected for first extreme rweather. It shall be protected from traffic until necessary strength has devolopod. • The dock shall be loft clean for other tradea. DID OP ITEM • • • • 303-2 ITEM NO. 304 - _..8.~1' 1G A.ND NFET LT~TAL A. 9e2pe, The work required under this section of the specifications in- cludes all labor, materials, equipment and cervices for or reasonably incidental to the installation and completion of the roofing, including all metal (lashings in connection therewith, all gutters and downspouts and all other sheet metal shown on drawings or required. B, erial.I, 1. Shoot MotaLs Unlees otherwise specified or indicated on the drag,,- ings, metal flashing shall be copper bearing 26 gauge Tonean Metal, roofing temper, Gutters shall be 0,051-inch thick aluminum and downspouts shall be 0.032-inch 1/2 hard aluminum. 2, -Solders All solder shall be the best grade obtainab'.Llj conforming to ASTM Specifications, and shall be composed of half pig lead and half black tin, all new metals. Solder flux shall be resin. 3. Bui t-Ua nnPint= Tile bulit~-up roofing materials shall comply in ovory respect to the Barrett Specification, Typo AA, 4-ply, roof for laying over concrete roof dock. 4. Canjg,s hoof cants shall be bituminous coated fiber board equal to s~ Tox-Cant as manufactured by Railton Co., Houston, Texas. C. LIt~allanon s 11 jj h s Flashing shall be insi•,alled at all intersootions of roofs with vertical surfaces, at all projections through the roof except at plumbing pipe vents, and elsewhere as shown on the drawings or required to provide watertight protection. All flashing shall be installod in accordance with the roofing manufacturer's requirements for a 20-year roof bond. (a) $ase aid Counter Flagl,= Base and counter flashing shall be e rovided between roof surfaces and masonry. At sides of vortical wallop insort base flashing in built-up roofing, lap 3" and extend 411 under roof- ing and G" up vall,, oap.flashoct and pointed. Cap flashing shall be sot in mortar Joints as drtailed, and turn the lotmr led; down over base flashing tc form a minimum 4" lap. Cap .fl nshin; nhall be of uniforin width built into the masonry as showm, with upper end turned up at least 1-1/2114 2. L)Qi, agi?p?dt&? Downspouts shall be secured to the masonry walls with 2-inch wide aluminum straps, and shall. bo sot approximately 11211 from the wall, Aluminum wire basdcot strainers :hall be sot in each gutter opening for downspouts. • 304-1 1! Garrott 1 U Roofing shall be equal in overy respect to Specification Roof, Typo AA, and shall be laid in exact accord- anco with the manufacturer's directions by a Roofings Contractor approved f by the manufacturer. The manufacturer of roofing materials used in the roof construction shall bond bo',h the roof and the complete flashing used in the roof construction for a period of tvr my years. The roof bond shall be signed by a local resident agent of the surety company to allow local action if required by the lhmor. The amount of the bond shall cover the cost of roofing and shoot motal work, All roof penetrations as well as all through-wall flashing shall be done under the Roofing Contractor's supervision and to We full satisfaction. D. Lfisco.jl$woujt rurnish and install all 9.toms of miscollanaous shoot metal work shoi,m on the drawings or othorwiso required for the proper con- plotion of the ,job, in a completely watertight manner. E. C ea jU: Surfaces shall be cleaned of all rosin, dirt, grease and other foreign matter, and all work shall be loft in a neat workmanlike manner. Downspouts shall be cleaned on inside of all foreign matter. END OF ITEM • • • 304-2 • STEM o z no r M s nrrp~rzr~nE A. Smoot The work covered by this section of the specifications includes • furnishing all plant, labor, equipment, and matorials,performing all oper- ations in connection with installation of doors and framos and windows, com- ploto, in accordance with this section of the specifications and the draw- ings. B. -Po l' Mj Except wdtoro otherwise O:otailed, all exterior door frames and all interior door openings shall have metal combination door bucks and jambs (no trim). They shall be constructed of not less than 14 ga. open hearth, cold rolled, full pickled, double aonoalod, patent lovoled shoat stool. Bucks shall be accurately formed to the profile shown and shall have the corners tightly ,joined, continuous flush t-nldod, dressod smooth and cleaned. Each jamb shall have three anchors of not loss than 16 ga. stool for securing frames to the masonry. Anchors shall be approximately 24" apart and shall be adjustable for at leant 7". Frames shall be mortised, reinforced, drilled and tappod for lock ,ntriko,4 ant' butte. Provide cover boxes back of strike cut-outs. Aftor fabrication they shall be thoroughly cleaned and shall be givon a standard prime coat, baked on. C. G aQ hill x` r +14~. Tnterior glazed framos shall have prossod stool frames as detailed and shall be equal in construction to door framos, anchored at ,jambs. • D. Lo;jq~V_j1 t 1 ngoXgl All doors indicated as hollow metal on tho plans shall be 1-3 4" thick and shall be of the design shown. They shall be in every respect equal to the specifications of doors manufactured by Coco Stool Products, Exterior doors to receive hold-opon devices shall be reinforced as required by hold-open manufacturer. Doors shall be given a prime coat of baked-on enamel at the faot)ry. E. aQQI_Intormod;ato Proinr.t.~rt wa,nd=l All windows in the project shall be stool intermediate projected, and shall moot the requirements of the Stool Window Institute for such windows. Windows shall be hot-dip galvan- ized in confoimanco with ASTM Designation g6 and then bondorized. lnotall- ati.on and glazing must bo porformad in strict aceordanoo with the manufac- tureris recommendations. Ventilators on all windows in tho Return luflr,o Lift Station shall be furnished with screens having galvanized retool framos and 16-me8h aluminum wire. l'. aLa Ll.: All doors and windows shall be erected plumb and true with hardtoaro loft in proper working order. 'they shall be sot as the masonry work progresses and shall have adequate anchors and ties to insure good installation. C. s7119~xri~g,s s Shop drawings for all metal doors, framos and windows shall W oubm ittod to tho Ebgineor prior to purchase of matorials • ET OF TT[;? f • 305.1 ITEM N-0,_34S-MU-STZa L r , _AUP-Muscl1.Ll011_R,~.,C,F~,7. lam A. i9pone of I t The work covered under this itom of the specifications includes all labor, materials, and equipment necossary for or reasonably incidental to installation of acoustical tile or gypsum board ceilings in the Return 5ludgo Lift Station as noted on the drawings. B, WStX'_iJF,1tt 1. C]ait~l t Channels shall be cold rolled stool. and shall be painted with rust inhibited paint. Main runners shall be 1z-inoh channels weighing not loss than 475 pounds per 1000 linear .foot. Nailor channels shall be used in the Chlorinator Room, 2. RunneZW Runners for acoustical. the susponsinn shall be "H" soc- tions of the size rooommendod by the manufacturer of the tile. Thoy shall be securely fastonod to the main channels by clips espooially made for this use and shall to placed 24" 0,C, 3• A. a,4Qpopr-1-me. I'T" splines between "I( suotions shall be spaced to support all edges of acoustical. tile. A channel shapod odgo moulding shall be installed around the pnri!not r or all tile ceilings at the sells. 3 4. coup iga^~,fI , Acoustical tile shall be Acoust ic-Colo-tox "Colotone Tile" 3 4" thick or an approved equal, Tile shall be kerfod not loss than 3/8" and beveled 1/8" on al.1 odges, Tilo may be 12 by 12 inchos or 12 by 24 inches, with a false joint to simulate two 12 by 12 :Inch units, r 5. (':yp oa ds Gypsum board shall be 3/811 thick and shall be equal to U, N, uypsum Co., or Gold Bond. C. awim Sj?9ina_s: The Contractor shall submit throo tilos for approval, and shall submit shop drawings showing the dotails of the tile installation. No materials shall be delivered to the site prior to receipt of approval of the shop drawings from the Engineer. D. xnsta 7-at n t All acoustical the shall be installed in square pattern symmetrical. about the contor line of each room. Units shall lxi tightly butted and corners and arr,son shall be full and without worn or brokon places. S~linos shall tie providod in all. ,joints, engaging every unit not less than 3/8 inch and extending the full. longth of the ,joint. Ihi.ring erection, joints around olectrical outlots, pipos, otc., shall be sealod tight with plastic caulking compound. Gypsum board shall be tapod and bedded with a thren coat system. Pages at walls shall be soalod tightly with caulking, E. lggni gi Following oroction, all dirty or discolored surfaces of the acoustical units nfial.l. be cleaned and loft free from defects. Units which are damaged or improperly applied shall be removed and replaced as directed by the Engineer, rND 01' T..TBI t W-l • I2211 NO, 307 - r C,,LLnN ous I MIS A. Mpe, g j i,t This section of the specifications includes furnishing all plant, labor, equipment and materials and porforming all operations f in connection with installation of miscellaneous itoms of work not covered olsowhoro in those specifications. D. Mota,,_ 1 Items; Metal items shall be toll formed to shape and size, vrith sharp lines or angles. Shearirg or punching shall leave clean, true lines and surfaces. Wold or rivet permanent connections. Whom serous or bolts are used, heads shall to countersunk. Castings shall be sound, free from warp, blow-holos or other defects which impair their strength or appoaraneo. Exposed surfaces shall have a smooth finish. Provide necessary rabbets, lugs, anchors and brackets so the work can be installed in a neat workman- like manner. C. a.vB..I}.rgLjd=s Detail of construction shown on the plans are explan- atory and typical of the character of construction required. Details not shown are to be similar to those which are shown for like casos. Additional explanatory drawings will be furnished by the Engineer whenever such may become necessary. Shop dravings and erection diagram necessary to execute this contract shall be prularod by the fabricator and submitted to the Engineer for approval.. • D. 'Thre,h2jg p: Notal thresholds shall be aluminum as shown on the draw- ings. Throsholde shall to set in a full bod of caulking compound and securely anchored to the floor Oth machine screws in load or expansion shields. Aluminum thresholds shall be Julius Blum A Co., or approvod equal. t 1. S.Y,L{.:5ldl?pp3.t;t Ifotal shelving supports for cl,sot,~ shall be Jackson's "JIFFY" standards and brackets an manufactured by Jackson Nanu- faoturing Company, 622 East Third Stroot, Kansas City 61 Missouri. Haight shall to seven feet with provisions for 5 shelves par olosot. F. 1.N91~ ti;l= Safety nosings shall. be provided on all concrete stops throughout the entire project. Safety nosings shall to abrasive cast iron 4 inches In width. Wings in concrete stops shall, be ;lot flush with they troad and visor surfaces to form an even plane an the concrete in poured. Nooirgn shall to Mi.to Foundry Co., Inc. "TR UTREll" plain cast iron styho for concreto stops. G. Wood shelving ohall lx; r1/4" No. I yolluw pine. No had-Aphims Wood blocking at fascia and gutters shall be Wolmanizod No. 2 yellow pine, 11 A11 concrete floors in the RoOrn Sludge Pump Station and the Filowor iiil.ding shall be given a floor topping of "'Terra Cotta" lWtorplato The topping shall be mixed and applied in exact accordance with directions of the Mastor Builders Company. 307-1 J, M 1 Stai s ri etal stairs shall be fabricated of structural steel shapoa and standard gratings and treads. Oratings and treads shall be as manufactured by the Irving Subway Orating Co., or approved equal, All welded connections must be ground smooth. Handraila shall have flush typo fittings with Joints pinned or wolded. If, Poilot, AcQg2A9X w: 1. 1'anQr_ Totirol Hobs Paper towel holders shall be Nibroo No, 5 standard white onamel, or approved equal. 2. o', et -Pp J,Wn Toilet paper dispensers shall be tlibroe No, RT 100 Tissue Disponser, or approved equal. 3• U r-raL.~nd. : Mirror and shelf over lavatory shall be Ketchum No. 1824 mirror and C•600-Y. shelf 24" long. 4, Sozp Dis~ bon~ee: A liquid soap dispenser shall be placed over the lavatory. It shall bo Watrous No. M807, or approved equal. rND OF ITE11 N • 0 307..2 S Im , fpL 304.-. f''YLA i VD, oj,. ,7g~rC A. ~i_01?e of_ I9Xk: Th work covered by this itom of the specifications consists of furnishing all plant, labor, equipment, appliances and m?.tor- ials and of performing all operations in connection with the installation of glass, complete, in strict accordance vrith this section of the specifi- cations and the applicable drawings, and subject to the tome and condi- tions of the contract, llj VAtpXj .j: 1. 2jpa,C ShUt Q asst Clear window glass shall. be double strength "D' quality, equal to Libby-Owons, 2, Plate 1G asst Plato glass shall be quality polished American plate glace, perfeotly transparent, with lustrous surfaces, fully equal to Federal Specification for Plato Glass of Glazing Quality, 3. Mirrors: Mirrors, where shown on the plans, shall be made of boat quality of ono-quarter (1/411) inch Amorican plate glass, heavily silvorod, olectro-eoppor plated, shellacked and painted, free from defects, except a moderato number of fino soods and an occasional coarse seed, and the reflection shall be clear and undistorted. 4. V4t#,x: Putty iv; glazing on metal shall be of the best grade and shall comply with the rocommondations of the window or door manufacturer. C. 9- e .a: Tl}e sizos of ,;},ass indicated on the drawings are approximate only, and the actual sizesj roquirod shall bo determined by measuring the frames to receive the glass. All [,-lase shall Lo factory-labollod on ouch pano, and labels shall not be romoved until final approval is obtained, The type, of glass to be installocl at various locations shall be as fellows: 1. C1Qar hootj,1g_,. Clear Sheet glass shall be used throuL ,ut, except ara indicated othori-Inc on the drawings or no specillod bo"low. 2. Platg~Qa. . 1/41' pl,ato glass (:hall. be used for the view windowo 3. ObM)tre C7.a.,M: Bottom "light of toilot window shall be glazed with obscure glass. D. n j%llpLj oL: Steel sash shall. be primed boforu glazing, and gl.nss shall bo bedded in putty, well. olipped, full puttiod vrith sitrfacos struck true and smooth and angles formed neatly. Glazing clips r.hall bo furnished with the sash. E. AQ,ggntancot Glass shall be protected against damago, and any damaged or broken glass shall be replaced prior to final acceptance. After inspoc- Lion, any labels, paint smears, or spots shall be removocl and the glass washed clean. END OF ITEM r 3081 • TTFIT M-.3_02.z QIIzTrte,. H2 A. 9=90 This section of the specifications inOudos furnishing and • installinGt all. hardware not spooifiod under other itoms of these speci. ficati.ons, complete, in strict accordance with this itom of the spooi- fi.cations and the appli.cablo drawings, tl. Ugpk ro"s us Hardware for windows is covered under section 'lfetal Doors, Frames and Windows". C. LiBL~ll~A9tu>~4. PirS~. ~Lat The catalog numbers and symbols referred to heroin are taken from the catalog of Schlage Lock Company, The Stanley Works, and are given to indieato the standard quality, finish and functions required. D. Koyinf,,t All Tooke master keyed one set + 4 master keys. oor butt rime Lock Trims,,,,,,,,,,,,,,Anodizod satinaaluminurnfu].l chromium Holdera, Door Stop, Flush bolts...,......+..Anodizod aluminum • 99kp.~n~l i'It All knob ?oeks shall. be heavy Outy cylinder type with cast trim as Sohlago Cambridge d,-,sign, with bo;, strikes, G. 3uta,~, awl Ilip et Extorior doors shall have o,-tra lioavy four bal.l• bearing stool butts. intorior doors shall havo rogular weitht, ball- Waring stool butts. Sizes shall be 14. r, 411. f. r 1-3/fit" doors• Il. ~g pl~to„ Il@ ;a;p t burnish hardt,.Yare to tomplate i-rhoro required, Proper templates of such hard.waro alial.l be furnishod to the manufacturor of the materials affected. 7, ~Y~44?u7 i q17 Pg_p CJjZt All hardware shall, be aseomblod orith each package distinctly marked for the location indicated on hardware schedule. Supplier shall upon delivery, furnish a complete l.iLt of hardware in dup - licate to the proper authorities, for chocking, said list shall len clearly marked to corroupond with marking xi each package. J. 1 '_axo. Mh©SiiAII (1) Moors A and D each shall havoc 3 pair butte BB118P 1 bottom bolt Coco Mo. 4031-US10 1 tap boit Coco No. 40324310 1 Look set D90PD Ilan-28 i 2 stop and holdor3 Glynn-Johnnon C-J70 M 309r1 (2) DoorF, C, each shall havoc 7:I pair butts I313 118P 0 1. lock sot DSl nD Ilan-2'3 I stop and holdor Glynn-Johnson r,..M (3) Doors D and 1 to closotst 1y pair butts DS179P I latch sot D109 Flan-28 1 stop Glynn-Johnson F13 ?.8X (4) Door D to Toilott 11 pair butts B13179P 1 lock not D408 Nan-28 I door-closer LON 4003 END OF 11-rt4 • • • • 309-2 ITEM NOA.~,1'1tIN~3Nb_ A. ;~Mt The work covorod by this item of the spcci.fi.cations Incl.udoc • furnishing all plant, labor, and materials and. of performing all oporationa in connection with painting and finishing, oornploto, in striot accordance with this section of the apooifications and the appli.cablo drawings. B. GopAra t The Contractor shall furnish all labor, material, equipment and services for cleaning and painting of surfaces as follows: 1, All metal work (oxoopt stainless stool, aluminum, bronze, copper and load), equipment, and machinery. 2. All exposed piping. 3. Unglazed masonry hlooks, 4, Woodt-cork and gypr,um board. Finish field paint;l.ng shall not ho applied to machinery, equipment or piping until operational tests are comploted. 0. '!oils. ~`9t ~T+~lu r1t Painting not i.ncludod undc,k thin soction is as followat r a. Shopcoatso b. Underground pipe protoctivo coatings, D, &X~mgnph,at All paint and finishing materials shall be applied by skill~od worltmon and shall to brushed or sprayed In even, thorough coats, without runs, crazing, sags or other blemishes. All coats, rogardl.oss of the material, shall be thoroughly dry before applying succeeding coats, Full drying t'_mo as recommended by the manufacturer of tho particular paint involved, shall be allowo d between ooata. Enamel, paint or ahollac shall be properly sandod bot%~*on coats, All prod,.iots shall be applied in accordance with the manufacturer's recommendations. E. tstrialat All materials for painting shall be delivered to the site in unbroken packages bearing the manufacturer's name and brand and shall be used without adulteration. In general the paint and painting materials manufactured by the Inortol Company, Du Pont do Nomoura & Company, Sherwin- Williams Company, Pittsburgh Plate Glasn Company and Y,oppors Company are roprosontativo of the standard of quality that will be ronuircd and paint- ing materials shall be approved by the Enginuor, Only the highost grade paint of each manufacturer and that which is suitable for the use intonlod Ball be approved. Only those thinners and solvents specified. In the paint formulae shall be used. Moro than the proscribed amount of thinner may be added only to the extent of maintaining the minimum spreading rate dosi.gnatod • in each individual formulation. • X1.0-1 F, 911W and„SAmRjggj The Contractor shall prepare samples of oach color and finish and submit same to the Engineer for final eoleetion and approval, The Contractor shall submitthroe displays of oach kind and color of paint to be applied, The panels used shall be reproeentativo of the respective typos of surfaces to which the several kinds and coloro of paint and stain are required to be applied in the actual work. Exposed piping shall be painted in accordance with the following code., Paw Sewage Brown Chlorine Orange., Primary Sludge Green R(turn Sludge Aqua Air Blue Final Effluent Silver Digested nudge Black Digostor 1upornatant Yellow r Dirostor Gar Pod i Go ~t~.on~:urQ~a 1. rota S 1` ?t Metal surfaces to be painted shall be thoroughly cleaned of mill scale, rust and other foreign matter by scraping, ohiaols, wire brushing (hand or maohino), flame cleaning, sand blast or, other suit- able moann. All oil and grease shall. be romovod with naptha, Any old, loose or sealing paint shall be entirely removed to bare metal. Not and dirt shall be removed by dry brushing or air blast prior to painting, Galvanized iron shall be washed thoroughly frith a solution of crppor ace- tate (6 oz. to 1 gallon of water) before applying paint. Mpg-WL shall.beremoved from lconc rete'bilo by rough sor l scraping mortar and abrushing and tile shall be washsd clean of all dust or dirt, The masonry shall be slightly damp before applying vinyl paint. 3. Lstli Ls Surfaces shall be clean, dry and sanded emooth, Pure linseed oil putty, colored to match the finished work whon required, shall, be used to fill all nail holes, c-acks, and roams. Putty shall be applied after the primp coat is di-y. All puttiod work shall be sanded smooth and oven. Knots and sap aroas to be painted shall be given a coat of shellac before priming. r 37.0-2 • 4. Q.WVMJP2UA! All gypsum board shall be clean and dry, ar.d bedded Joints shal), be sanded smooth prior to painting. 1. R-rPA..bPlicati=.# Only top quality hog hb~ir or synthetic bristle brushes shall be used. All paint shall be applied i3o as to form a uniform film of a thickness which is consistent with the specified coverage for the paint toing usod. Sufficient cross brushing ohall be used to insure filling of all surface irregularities and complete ooverago. Particular care shall be used in painting oornors and other restricted places to obtain uniform application. All final brushing atrokos shall be made in the same direction and toward the previously appl'Lod paint. The final coats of enamel paints shall be brushed only enough to spread the coating evenly and avoid excessive thioknoss. 2. x Al?2~:~~i When paint is applied by spraying, tho air gun used shall be adjustable for regulation of the air and paint mixture. The equipment shall have a suitable water trap to remove moisture present in the compressed air, faint pots shall be equipped with a hand agitator to keep the paint well mixed. All equipment shall be thoroughly cleaned at he end of each day's work. The width of the spray shall be not loss than tvolvo (1211) inches nor moro than eighteen (18") inohos. The pressure shu.l bo suitable for typo of paint used. Frequcnt checks shall be made • to innure maintenance of oorroot spreading rate, and tho coating ;shall bo uniform i-Without sags, runs, or 'orange pool"offoct. 9pooial care shall be taken to see that edges, cornorn, and bolt hoads aro completely coverod and that there has barn no bringing over the film. A r. ,l~hit~_rtdra7,_ ~ctttt,~l~giJ~; 1. :Cnt~ri;ox (a) M7,,1)onl^ttl~~_~'Amo,~s After touching up shop prime coats all metal doors and .fi,,,unes ;hall be given one coat of onamol undorooator and two coats of noml.-gloss enamel. Undoreoator shall be squal to DuPont DUI,UX. (i3) r Llletura 13topl.: All exposed structural stool including joists, bonne, oolumns, purl.lns, otc., shall have the shop coat touched up and a coat of rod lead p ivon to all field connections, then given throe coats of paint as specified in paragraph above. Structural stool hidden in walls or ooilings shall have shop coat touched up and field connections painted with rod load. No J.'urthor painting will be required. (o) MU.9arx-P1ooY i Unglazed masonry blooks shall be given two (2) coats of DuPont Vinyl Masonry paint of a light color sclootod by the Engineer. r • 310-3 • (d) Farm a : All exposed £ormboard shall be painted with one (1) coat of Cooke lacquer sealer suitable for use under enamel, and two (2) coats of semi-gl.oes enamel as used on adjacent steel work, • (e) Woodwork: All interior wood fininh (insido and out) and shelving both sides and edges) shall be s"ained and lacquered. The first coat shall be oil stain, similar to DuPont's, of color as selected. Oil stain shall be applied with a soft round brush. 4Thon the stain begins to set, wipe off with a soft cloth to bring out the highlights and grain of the wood. After staining, fill all nail holes and defects with putty colored to match the stain, carefully wiping off any putty stains. Follow with three finishing coats of lacquer, the first two coats being filler. (f) Gypsum Board: Gypsum beard shall be gluon one coat of primer- sealer and two finish coats of Duco somi-gloss enP,;nel. 2. Exterior total Works In addition to shop or field prime coats (touched up l~ outside metal including doors, handrails, structural steel, flashing, and downspouts, except aluminum and copper, shall receive two coats of machinery enamel equal to DuPont DULUX. Wash galvanized iron before painting, as hereinbefore specified. J. Mechanical and Electrical Paint Schedule! 1, Submar od Metal xnc]uding Clarifier, Bar Screen ()niqrsi a of • Digester Cover Inside of Pro.ssut Tank and all Other Surfaces in Contact With S~ago= First Coat Inertol Primer No. 621 (shop) e' Second Cott - Inortol Primer No, 626 Third Coat - Inertol Standard Thick Fourth Coat _ Inertol Standard Thick Fifth Coat - Inertol Standard Thick The total coating thickness after completion shall be not leas than 18 mils. Additional coats of Standard Thick will be required as necessary to produce this thickness on all metal surfaces under this paragraph. 2. To Side of Di ester Cover an I0 We of Potable Water Tanks First Coat - Inertol Primer No. 621 (chop) Second Coat - Inertol Primer No, 626 Third Coat - Inortol No, 49 Thick Fourth Coat Inertol. No. 49 Thick The total coating thickness after completion shall be not less than 12 mils. Additional coats of No. 49 Thick will be required as necessary to produce this thickness on all metal surfaces under this paragraph. Other on-Submer a Metals All unpainted piping, volvos, machinery, S pumps, motors and equipment eha 1. be given one coat of rust-inhibitivo primer equal to DuPont bulux Primer No. 760 and two coats of Dulux machinery onamol, Items of metal that have received shop coats shall have such shop coats touched up and be given two field coats of machinery ename:, f Y1 K. ZP RW' =;!jk! The Contractor shall uno one convenient location for keeping all materials and doing all mixing, atop Floor of this space shall be properly protected with drop clothe. Oily rags and waste shall bo frequently romovod from the building and under no circumstances shall they bo allowod to uccumulato. At the completion of tho work, the Contrac- tor shall clean off all paint spots, oil and stain Prom all surfaces and loavo the entire projoct in a satisfactory condition. TTofr.U.Pt ~l0-5 i PEM N0. '~1 _ UgORATOI Y FURNITU1iC A. a4.SdFz This section of the speoifications inoludes furnishing and installing all laboratory equipment other than plumbing hook-up, as shown on the drawings and specified herein. B* Work no n 1~ Items of work in the Laboratory which are covered under other sections include the rough plumbing. 0. Ge orals All items of laboratory equipment specified herein are taken from Fisher Bulletin FS-2274 It is intended that all pieces of equipment shall be of the manufacturer's standai-d fixtures; however, several items must be assembled from standard parts. Work tops are to be of the depth and width shown on the drawings and reagent shelves are to be the depth required to extend to the walls. Work tops, curbs and r eagent shelves are to be Kemrook and shall be continuous without joints to the fillerspossible, V~imtherm.'eaAnygtmetalextent shallAbn madesinks by rtheol lbe molded one aboratory pieoe manufacturer. END OF ITEM ~ 311-1 • SECTION ll M1Vr1V1nAL SPNGZH'CAT ION • I'PES9 N0. 40. - GENrRAL TsL ~CI'RICAL IiEQU2lt~MCNTS Aa $oepo,o Workt The electrical work shall oonsiut of pru,,ideing a oomplpto and operative elootricnl installation for the Denton Sewago Treatmont Plant, as shown on the plans and provided for in these speoifioations, The work includes the furnishing of all labor, materials and equipment, except that specifically stated to be furnishers by the Owner, to provide a complete and workable electrical syr,tem. B, Codos and Stand sh arLst All electrical material, workmanship, and tests all be in conformity with the applicable current standard rules, regu- lations, and specifications of the following authoritiost National Board of Fire Underwriters (NBFU) and National Electric Code (NEC) National Electrical Monufaoturerel Association (HEMA) American Inatituto of Llootricul'rngineers (AIEL') • Insulated Power Cable Engineers Association (IPCEA) American Stonc'.arde Assooiation (ASA) National Buranu of Standards (NM) (National. I;l.eotrical S,.fet y Code) City of Denton, Texas Inspections and approvals for the work by authorities having logoal jurisdiction shall be obtained bythe Contraotor. C % r al Wot manehint All matorials shall be new unless otharwiso specified, and first class in every respect. All mfiterials of a type for which the Underwriter Laboratories have established a standard shall be listed by the Underwriter's Laboratorios, Inc., and shall bear their labol, The Contractor shall furnish to the Owner, for his npproval, a list shotaing all equipmont he contemplates incorporating in the work, Samples of materiala shall be submitted for approval when so directed. Equipment, materialco and articles installed or used without such approval shall be at the risk of subsequent rejection. The, schedule of materials shall includo catalog numbers and complete deseriptxon, Approval of such drawings, equipment, and specifications shall not relieve the Contractor of the responsibility for the satisfactory performance of the equipment as furnished and instnllod. • • 401.1 • All work shall be performed by competent workmen, skilled in this type of work. Work shall be neat throughout, and structurally sound. • D. Groundings All conduits, motors, cabinets, %tlots, and other equip- ment shall be properly grounded in accordance with Notional Electric Code requirements. All ground wire within structures shall be run in the con- orate, except where necessary to omerge and make a tap. All connections between ground conductors shall be brazed with Yhos Copper" rod or by the thermito method known as "Cadweld . The conneotions shall then be oonted with hot asphaltum compound. The ground rods shall be j/4" x 10#..0" copper-wold, and connection thereto shall be with Burndy #GAR6426 clamp. The ground wire shall be TW insulated, stranded oopper, sized as shown, Whore ground wire is exposed to mechanical injury it shall be installed in thick wall conduit. Connections shall be made to equipment with solder- less connectors, such as Burndy Type QA or approved equal. The metal sur- face under the lug shall be cleaned to bright motal. Connections to motors shall be to a grounding stud which shall be threaded into the stationary frame and not an end bell,, and the ground wire oholl not be lugged to a mounting bolt. L.cation, of OlItl. eto: The approximate lovation of cabinets, panelboarde, switones, power outlets, eto., are indicated on the plane. Convenionoe outlets shall be looated 11.6" above floor and wall switchos shall be • located 4'-6" above floor. F. P ih"''gi All. expofled cabinets, junction boxes, hangers, conduit and o her ov et,b ghL.1 be s,horou{~hly cleaned and painted with two (2) coots ! of an approved eip-:ino onamol in colors to be specified by the Engineer. Name plates are n}b to be painted. p. T jjJ.nb: All circuits shall be rung out and on completion of the work all of the installations shall be entirely free of grounds and short circuits. H,~ Guarantee: The Contractor shall guarantee against moohanioal defects in any or all materials and workmanship covered by those specifications and shall make good, repair or replace, at his own expense, any defective work, material or part vo ioh may show itself within a period of one year after final. acceptance of the work. BND OF ITE14 • 401-2, • TTIs'M N0. 402 . }✓LCCTRICAL WIRING • A, C nduit; A complete electrioal. conduit system shnll be furnished and installed, and shall oons:lst of embedded and exposed rigid, thiclt wall, galvanized conduits, Rigid steel galvanized conduit shall bo hot-dipped galvanized inside and out and shall have a coat of enamel or laoqu4r applied over the galvani. zing inside and out, Conduit shall be mnnufaotured according to A.S.A. Standard No, 080.1-1953 and the latest revision thereto. All oonduits ahall be galvanized, rigid, heavy wall att-ac.l, Underwritorts approved, except the final connection to motors, which may be flexible metril conduit for a distance not to exceed eighteen (18") inches. Whore used, tivi flexible conduit shall be American Metal Hose with a neoprene ,jaekot and Appleton Sealtite fittings, or other approved equal. Conduits shall be rigidly supported to the building structure by moans of straps or olamps, bolted or screwed to the structure. Hangers or ties of wire will not be permitted, Conduit sizos not shown on the drawing shall be in acoord.anuo with thu National Electrical Code roquiromonts, One_hnlf (1121) Inch conduit is tho minimum sizo that will be permitted. • Double locknut construction shall be usod on all oonduits terminating in stumped metal motor terminal, motor startort safety dwltoh, outlet, ;junction or pull boxes, etc., with approved type of bushing over end of • conduit. Length of conduit threads shall bo inareased at outlet, ,junatlon and pull boxes where necessary to aooommodate double I.ooknuts and bushing, All bushings shall be fully soatod against end of conduit. Bushings shall be composed of an outer threaded metal ring with an innnr insulating oonrpound ring moulded into the metal ring, or shall be composed entirely of an approved insulating material and of the throndod type, Conduit nipples shall have two independent sets of threads. threads shall not be used. Where conditions require J)ining two fixeding conduits into a aontinuous run, a conduit union rehall be used. Where conduit joints occur in concrete slabs in damp or wet looations, or exposed to weather, th)y shall be made watertight by applying a coating of white lead and oil on the entire conduit thread area before assembling. All oonduit Joints shall be drawn up as tight as practicable. Special care shall ba used to ;ice that such Joints are tight moahenioally and that tho white load application completely soaln them against the entrance of moiaturs. • • 402.1 "Condulot" type fittings shall not be used on conduits containing wire gauge or larger in size. Pull boxes shall bs provided and installed whoro nocoacary to facilitate the installation of eahlo and wires. The pull boxes shall be of N.F.C. size, Undergr°ound steel conduits shall be paintod with a heavy coat of asphaltum paint before burial. Horizontal runs of conduit shall be so installed, if possible, to provide a natural drain for condensation without pookets or traps where moisture may collect, B. Wire ad Cblg; Conductors marked H(IWN shall be 600 volt rubber in. sulated, neoprene sheathed, single conductor cable and shall conform to IPCI,PA 8peo, 5-19-61, Appendices C{A} and H. The cable shall meet UI, 75° 0., wet or dry, andushallnbe General Electrich81cpper -58O2O, temperature approved of equal. qu Unless otherwise specified, all other oonduotors shall be Typ5 TV, 600 volt, thermoplastic insulated, single conductor cable, 75° C, wet or dry, and.. shall be Anaconda AP.06031, or approved equal. Wiro shall be Anaconda nensheath, or approved equal. All;,Are shall bear the approval of Undora,ritc~rs' Laboratories, Inc. All i,Are and cable Q AVIG and larger in size shall be stranded, minimum size conductors pormittod are #12AWG, oxoept as specificallyhindicated otherwiao on the plans. All conductors shall be continuous from outlet to outlet ar-J no splices shall be made except at outlets. Sufficient wire shall be left at all outlets to make connections to apparatus without straining. All splices and taps shall be made with mechanical type, compression type or spring eonneotore, Splices and tape shall then be roinsulated with Sootoh Tape No. 33, half lopped, to a thickness of a.J times the oonduotor insulation thickness. A soldere=d splico tap or connection shall not be noceptablo. END OIL ITEM r X402»2 OR ZTM NO. 49-L_ IZCTRICAL,E2UINMGNT A, Outlet pares; Outlets for concealed wiring shall. be galvanized s] atnmpod sheet metal type, installed flushti4th the finished wall sur- face. Pull boxes, junction boxes, and all other boxes to which no fixture or device is to be attached shall be fitted with blani, covers and painted to match the surroundings. Outlets for exposed wiring shall be cast iron boxes with threaded hubs, Where more than one switch occurs at the same location, use multiple gang outlet boxes covered by a single plate. Wa1Switohoe: Wall switches shall be of the totally enclosed tumbler tYPe, speoi.fioatiou grade, of "T" rating not lose than 20 amperes. Inei:„ll. awitahes to accomplish the control as shown or specified, uoing sit4glo-pole, doublo-pole, or 3-way switch as required. Use gang mounting where two or more switches occur at the same location, C., Convenience Out',e y; Convenience outlets for gonoral sae shall be Underwriters approved duplex grounding typo, 1$ amporce, 125 volt, equal to Bryant No. 5262, D, Switch and Reoentpole Plto3s Switch and reoeptr4ole plates shall be p of stainless stool throughout. Electrical _ Connections t Sneei:al iJcuinmentt The Contractor shall make all oleo trical oonneotions to equipment, furnished by the Owner and/or furnished under other contracts, and furnish wiring, conduit, outlet boxes, eto,, as required for same, tie shall check the Plans and Spooifi- cations and inform himself as to tho amount of such wiring that may be roquirad and include acme it, his tid. T. Service t;ntrance Iittinptis All service conduits containing #2 AW wire or larger shall terminate in compound filled cable terminators, O.Z. Electric, or approved equal, Vertical conduits shall use type CRC and horizontal conduits, type CRH, aide filled. Service conduits containing d3 AWO or smaller shall terminate in service weatherheads, Crause-Hinds Type F, or approved equal. O Pow r ne,e i The 3 power panels for the Raw Sewage Lift Station, Return ludFgge Pump Station and Primary Sludge Pump Station shall be 3 phase, 3 wiro, 480 volt, A.C. panels, Westinghouse Typo CD?j or approved equal, Enoh ranel shall hove a main breakor and feeder breakers sized as shown on the eohematios, Spnoe shall be provided for breakers shown dotted. A 0 1403-1 TEM NO, 03 - ET MICAjj& UIPW N:C A4.-. t1Wt,Bo_ xes: Outlets for oonoealud wiring shall, be galvanized • stamped sheet metal tyre, installed flush with the finished wall sur- face, Pull boxes, junction boxes, and all other boxea to which no fixture or device is to be attached shall be fitted with blank covers and painted to match the surroundings, Outlets for exposed wiring shall be oast iron boxes with threaded hubs. Where more than one switch occurs at the same location, use multiple gang outlet boxes covered by a single plate. B. Wal Swi hes: Wall switches shall be of the totally onolosed tumbler tylor specification grade, of "T" rating not less than 20 amperes, Install switches to accomplish the control as shown or specified, using single-pole, doublo.,pole, or 3-way switch as required. Use gang mounting there two or more switches occur at the game location. C, Cotlyvnioni:o Ou.'►e : Convonionoo outlets for gonoral use shall be Undorwriter~e approved d,uplcx grounding type, 15 nmporns, 125 volt, equal to Bryant No. 5262. 1 - Switch an...o fl aol,o l'1 taut Switch and receptacle plates shall be 0 of stainlcse steel throughout. E, rlcotriosl Connections to 3 ooia f~ ui m ntr The Contractor shall make all electrical oonnections to equipment furnished by the Owner and/or furnished under other oontraota, and furnish wiring, conduit, outlet boxes, etn „ as required, for same. Ho shall check the Plans and Spooifi- oations and inform himao if as to the amount of such wirirg that may be required and include same in his bid. :.:..va_Nntrance,F'ittinrei All service conduits containing #2 M4 wire or larger shall terminate in compound filled cable terminators, O,Z. Electric, or approved equal. Vortioal conduits shall use type CRC and horizontal, oonduits, typo CRII, side filled, Servioo oonduits oontnining J3 AWO or smaller shall terminate in service woatherheads, Crause-Ifinds Type F, or approved equal, 0, Power ' net i The 3 power, panels for the Raw Sewage Lift Station, Return uag~o isimp Station and Primary Sludgo Gump Station shall be 3 phase, 3 wine, 480 volt, A,C, panels, Westinghouse Typo CDP, or approved equal. gaoh panol shall hove a main breaker and fonder breakers sized as shown on the schematics. Spoon ahall be provided for breakers shown dotted. • 4o3-1 • Breakers shall be quick make and quick break with center TRIPPED Position, All multipole breakers shall have an internal common trip, Main busses shall have a current r,Nting equal to or greater than the main breaker, AU cabinets shall be NEMA 1 oonstruotior~, .for surfaoe mountinC, and shall have a door with directory frame. Drawings shall be submitted for approval before manufacture and shall show type, rating, and location of broakors, dimensions, and any other data necessary to determine compliance with these specifications. 5-;-~- Ra--=Se~ane, Dartnillt~t_ or~_Blower Waste S~ ud a en' i t n 8 u e Pam ..ta: These starters have been speoified An Ssotion V of these Specifications, The starters shall. be installed and all connections made thereto. ~ Raw Sewgda pun, 5t„ yel Con.rnl cnhi.,ei The level control cabinet has been specified in Section V of these Specifications, The cabinet shall be installed and all uonneotions made thereto, Return a],~tdA tt+±lldinsr Ins rument Psna1 Con rclhr There shall be installed on the Instrument Panel, 3 red indicating limps and 2 OFF-ON selector switches, Indicating lamps shall be transformer type with 110 volt primary, • Hvdro.Prsgr_, o..Svs}em PumA= The starter shall be a full voltage, non-reversing magnetio motor starter in a NM 1 enclosure, for operation on 440 volts, 3 phase, 60 cycles. The starter shall have 3 phase overload protection and a oontrol transformer with 110 volt control. Ttie starter shall have a oovor..mounted HAND-017-AUTOMATIC selector switch. bs"__Primar~^-S~ dae p a1J'gX_N . L l_t The starter shall be a full voltage non-reversing magnetic motor starter in a NEIA 1 enolosure, for operation on 440 volts, 3 phase, 60 cyol.es, The starter shall have protection and shall have a control circuit tran5iarmor for 110svoltecon- trot. The starter shall contain a DPDT relay and shall have a oover-mounted HAND.OFF_AU'fOMATIC selector switoh, A time clock shall be furnished for mounting adjacent to the starter. The clock shall have from 1 to 24 ON times per day with ON time adjustable from 2 to 15 minutes, The clock shall be 115 volt, 60 cycles, and shall be Tork #2..4100, or approved equal. The control shall funotion as followst The time clock shall turn on the pump at a preset timo, causing the pump to run for the amount of ON time aeleoted. During the ON time interval, the density meter contacts will close, holding in relay R, which allows the pump to run beyond the ON time interval. When the dereity meter aontaots open, the holding relay R drops, the pump stops, and the control awaits another cycle of the time alook, A schematic is shown on the Plans, • 403.2 _!n r S udtta Puma St er No• 2: The starter shall be a full voltage, non-revevaing magnetic motor starter in a N04A 1 enclosure for operation on 440 volts, 3 phase, 60 cycles, The starter shall have 3 phase overload protection and shall have a oover-mounted OFD'-ON selector switch. Ve Fan Starters. The throe vent fan starters for the Raw Sewage Pump Station, Return Sludge Pump ,Btation and Chlorine Exhaust Fan shall be a single phase, 110 volt, manual motor starter, Westinghouse Class 10-0231 for flush mounting, and shall have overload protection. Return Slu ae puiid+nu Un{t Nea er t Un1t NAAt sr No The heater shall be a 1320 watt, 110 volt, 1 phase, 4507 BTU, heavy duty with built-in thermostat, Eleotromode No, 2015 NID, or approved equal. ?,Unit Hea er N_a,,,.21 The heater shall be a 3 K.W-, 240 volts, 1 phase, 60 oyoles, 10,000 BTU minimum, with built-in thermostat, Elootromode No. 3257.14, or approved equal, with hanging bracket No, 3330 for wall mounting, ak, U i }seater No. I The heater shall hi a 7.5 K,W.0 240 volts, 1 phase, 60 cycles, 25,500 BTU minimum, with sepdirate thermostat, rltotro- mode No, 32601 or approved equal, with hanging bracket No, 3932 for wall mounting. LPL._ r..'Io~odlitth ItA1 b The rei,ay shal l bu a Wt r9tirighouse Typs N![ r0 ay or approved equal, with 110 volt coil and 4 NO contaots, in a NE14A 1 enclosure, Pr y_ udrte S ti 4n Li n +n T XLngXg= a 5 KVA, 1 phase, dr . j The transformer shall be The transformer shall be for4indoor wall4mountingwand shall%beWe taps, Type E, or approved equal, a stinghouse t;hambor_ Litthtina B~rThe lighting breaker shall be a 25 ampere, 2 pole, 00- 0 volts molded case oirouit breaker, in a NEMA 3!1 enclosure, Westinghouse Type AM or approved equal, -`Chit Chamber i hti,nr fir, msr: The transformer shall be a 1 KVA. 1 phase, 480 to 20 240 volts. The transformer ohall be for outdoor wall mounting and sht;ll be Westinghouse Type E, or approved equal, T Li h 1111 Pa 1 110 I'D" "C" I'D" 118"s Eaoh panel shall be a 120/24-0 volt, 1 phase, 3 wire panol in a E l enclosure for surface mounting, stating of the main busses shall be equal to or exceed the ampere rating of the main breaker. Breaker sizes and layout shall be as shown on the schematics. All two-pole breakers shall have an internal common trip. [beakers shall be bolted-in, Quioklag C type, • Panels shall be Westinghouse MAD, or approved equal. • 403-3 • Li Lisa 1ix,urest The Contractor shall furnish fixtares throughout oomplete with lamps, sooketo, hangers, eto,, as required. The types of fixtures required shall 'oe its hereinafter specified and any substitution must have written approval of the Cngineor. Typo At Holophane No, 6500.4, fluor,+;%ont Fixturo with acrylic prismatic enclosure and two 40-watt rapid stArt cool white lamps, Typn Bt Art Metal Lenttdrum No, 3383 with two 100-watt inoandesoent lamps. Type C; Art Metal Walr.oro No, 3549A with two 75-wL, t inoandesoent lamps, pull ohain, and outlet. Install over mirror, Type DI Poroelain reooptaole with 75-watt lamp and pull chain, Type Et Porcelain reooptacle with 100-watt lamp and pull chain, Type Ft Holophane No. 415 outdoor unit, prismatic, with 150-watt inoandesoent lamp. Type Ot Benjamin Type V7600 RU4 Poroelain Dome, vented, with 300-watt lamp, Type Ili Revere No. 7148-WS, 300-500 watt enclosed Type (Floodlight, stippled lens, with 500-watt lamp and hinged cover. Type It Rovero No. 3165.11 Enclosed Typo Lampholder with PAR-38 150-watt lamp and hinged cover, Install at top rim of vault, Typo J1 Art Metal Noo 2681 - 2 LO Vapor Tight wall fixture with 150- watt lamp, Install at 8+_0" above floor. Type Ks Revere No. 3018 Porcelain Area Lighter, green, with 300-watt lamp and set on 2" pipe at 91 elevation above walk. Post shall be equipped with a weatherproof switch and duplex outlet. Typo Lt Pyle No. BO LA.175 Vapor tight Industrial mixture with 75-watt lamp, Install behind sludg.s density sight glass, Y...~ 2~li a Po t Floodli ht poles shall be Class 3 oroocoted southern rn yellow plneg Set poles to 61 depth, Provide t casti,junction box 10..611 above ground at each pole for extension to future poles, CND OF ITEM 403.4 • ITEM 404 . ZMCTRTCAL 8ERV C8 A. Electrical service to each building shall be 480 volts, 3 phase, 60 cycles, Where a separate lighting service is shown, it shall be 115/230 volts, 1 phase, 60 cycles, Where overhead service is shown, the Contractor shall extend the service outside the building as shown on the Plans, leave sufPioiont wire for service connection and install a suitable service rack. Where underground service is shown, the Contractor shall extend the service into the power company's substation and stub up the service pole to a height as required by the power company, END 0:4' TTEM • • • 404-1 1 ~ • APPENDIX SECTION V SPECIFICATIONS FOR EQUIPMENT TO BE FURNISHED BY owNm r • INFORMATION ANIl SFECIAX INSTRUCTIONS TO BInnrR4 • 1. Sipes These spenifioations cover the furnishing of major items of aquipmentt for installation at the proposed Sewage Treatment plant. 21 } e t o t Bidders may submit proposals on any or all saotions or ,temd n the Proposal. The Owner reserves the right to make Such awards of contracts as may be determined to be to the best advantage of the Owner, 3, AdJ= 1 Bids shall be made on the blank form attached and the com- plete doouments and plans returned with the bid, Bids not so made will be considered out of form, Bidders shall include descriptive inforntion as specified elsewhere, 44 4' Aid t Each proposal must be accompanied or ao a by a certified check p bond in an amount equal to at least five (A) per osnt of the amount bid as a guarantee that, it awarded a contract, the bidder will execute such oontract within ten (10) days in the form hereto attached and mnke bonds of one hundred (100%) per cent of the contract price, 5, e~!'orinanca nd --,~,~d -Ps~v.+sen, ondt` The bidder shall include in his • Proposal the cost of proanviding a Performance Bond and a Payment Bond, The Owner reserves the right to delete the Bonds from the Contract and to reduce the amount of the Contract by a sum equal to the cost of the Bonds, The cost will be as eat forth in the Proposal, • Bonds shall be executed pp business in the State of Taxaeapproved and acceptable~accordingttorthheedlaatest list of companies holding Certificates of Authority from the Secretary of the Treasury of the Unit^d Stated of America, Performanoe Bond shall be arranged to extend for a pari.od of one (1) year beyond the date of written acceptance of the work by the ner, to guarantee the repair and/or replace. ment of dafeotive materials and/or workmanship which may develop during this period, 6, °xa St a gale Taxi It is anticipated that the Owner will be exempted rom ~ Sta Sa1ns Tax", The bidder shall not include this cost, Owner will in"deStatterminig The Sales Tax" which might be requiredcompensate the Contractor 7, of live t The Owner desires that the equipment he delivered at the earl sot passible date. The bidder shall indicate in the proposal the time in which he will make delivery an(, Aa a,, award of contract, the Owner may give consideration to the time of delivery as proposed by the bidder, 8. di WJ1 In the event that the Manufacturer suffers de • ancs dve to any cause beyond hi+ oontrol, including, but not~restrriicted to act of Ood or of the public enstgy, sot of Oovernment or any agency thereof, • b • ECI L Sri I q 11 " This pro,jeot will be financed in art Sewage Treatment 1Jorke9 Public Law 660, p by s Federal Grant for `L 21 4. tj2 The time allotted for the completion oZ ail items o work shall be as set forth in tho "Information afk< Special Instructions to Bidders", which time shall begin on the tenth day after the it,puanoe of the Work Order, The Work Order shall consist of a written request by the Engineer to the Contractor to proceed with the construction of the project. re 30 - 111 - 6082 requirements and etipu *no n t s t $ub*t to the other Doouatentso the Owner reserves the right tcfaward he AM other contracts Ctoothet qualified responsible bidders submitting the lowest srtd beet bid covering esoh section of the pro4eot whioh the Owner decides to sward at this time. The Owner also reserves the right to aooopt or reject any fty 0 or all sections it it is deemed to be ir, the best interest of the publio4 larrityrortto wive suchreseries the it such e action iis in the u~iint~ ~ public ntereat, • i 9 • • NMI DO NOT DETACH PROPOSAL FROM BOUND DOCUMENTS* Denton, Texas . 1961 PROPOSAL OF.. A corporation organized and existing UMOr the laws of the State of_ a partnership consisting of . an individual t►eading an • To THE CITY OF WNTON, TLXAS The undersigned bidder, pursuant to, the foregoing "Invit.J•.V6 for Bids", has carefully examined the Information and Special Instructions tv '4iddere, • Special Provisions, this Proposal, the form of Contract and its general and supplemental conditions, the SpeoiPicatione, the Plans, and also the site of the work, and will. provide all necessary labor, auperintendenos, maohinery, equipment, tools, materia'is, servioes, and other facilities to fully o Wlete all the work as provided in the Contract Documental and binds himself upon acceptance of his Proposal to exeoute a oontraot, Performance Bond and Pay" went Bond according to the presoribed forms guaranteeing delivery and proper functioning of the equipment for the following prices, to-wits Bid Item Description Amount {x~L !Price .te be Wr+ n in Wow 10 For the furnishing of one (1) screening and cutting machine complete with appurtenances as apeoified harein, the following prices a. For a %arminutor" machine the aura of Dollars $ • h • Did Item Description .111.. (Price to be Wes, in • b, For A "Comminutor" maohine, the sum of Dollara $ 2• For the furnishing of two (2) electric motor driven air blower units complete with motor starters and all other appurtenanoes specified herein, the lump sum of , Dollars $ 3. For the furnishing of one (I) raw sewage pumping unit with variable speed drive • (Unit No. 1 in Spooifications) including motor starter and variable speed unit as specified herein, the lump sum of Dollars For the furnishing of two (2) raw sewage pumping units with constant speed drives (Units No. 2 and No. 3 in Speoifioations) complete with motor starters as specified herein, the following prices e. For Unit No. 2, the eta of ~ Dollars b. For Unit No. J, including emergena~ engine and right angle drive, the sum of Dollars $ Total for a b b i Sid Item Desoription -OMWX. IPIL Amount Bid 50 For the furnishing of one (1) complete level control system for control of raw sewage pumping units ae specified herein, the lump sum of Dollars $ 6. For the furnishing of three (9) return sludge Pumping units complete with motor starters as specified herein, the following prioesi a. For Unit No. 1, the sum of Dollars $ b. For Unit No. 2, the sum Of- - M Dollars $ o. For Unit No. 3, the sum of Total for a, b h c For the furnishing of one (1) 551-4" diameter primary clarifier mechanism and one (11 650»Q+1 diameter final clarifier mechanism ae peoi- fied herein, the lump sum of, Dollars $ 8. For the furnishing of air diffusion equip- ment complete with all appurtetwunces as specified horsing the following pricess Bid Item Desoription -Aubm. (trice Amount Bid a. For "awing diffuser equipment", the sum of Dollars.) b. For "t'ixed diffuser equipment", the sum of - ball+srs. 90 For the furnishing of grit ohamber equip~ went, inoluding all appurtt.,,Anosa speoi« Pied herskn the lump sum of 10. For the furnishing of ohlorination equipment as apeoified herein, the 114V sum of ..Dollars, ll. For the furnishing of one (1) floating digester oover as apeoified herein, the sum of Dollars. 12o, For the furnishing of waste gas burning equipment and aaoeeaoriea as speoi.. Pied herein, the lump sun of~ - Dollars. .M k Bid Item Description Amount Bid A 13. For the furnishin,q of one (1) complete sludge density measuring system as specified herein, the sum of~ Dollars 14. Fors the furnishing of metering equipment and appurtenances as speoified herein, the following prices as For raw sewage and return sludge flow 4.ubea and appurtenanooj, the sum of,. Dollar,, $ b. For one (1) 3" magnetio flow meter and accessories, the sum of,,,. Dollars at For propeller flow meters and appurtenances, the sum of Dollars W d. For oriftoo plate and air metering system, the sum of Dollars The undersigned prop.,ses that delivery will bw made after the date for oommenoAnngg work as set forth in written work order to be furnished by the Owner, within the number of days given in the schedule below. The under- signed agreae that the amount of the oontraut may be reduced by a sum equal to the cost of the performance bonds as set forth below in the event the Owner decides to delete the bonds .iron the contract. ♦ 1 SJ Time for Nlivery Cost of Per- DsIOXivtign Calendar Tiavs formnog bond la' Barminutor $ • 1b. Commi.nut,,,r $ 20 Air Blowers $ j. Raw Sewage Pump No. 1 4a. Raw Sewage Pump No. 2 yw 4b4 Raw Sewage Pump No, 3 , 50 Raw Sovmge Level Control Y►~YrMYrr.i $..~~~yy 6* Return Sludge Pumps $ ~ 71, Claritior Mechanism 8a0 Swing Diffuser Equipment 8b„ Fixed Diffuser Equipment $ 90 Orit Chamber Equipment .101, Chlorination Equipment $ • 11., Floating Digester Cover $ 12,, Waste (has burning Equipment 134 Sludge Density Measuring 4+ystem $ Vwt. Flow Tubes $ 141). Magnetic now Meter 1413. Propeller Flow Meters $ 14de Air Metering ;ystem Within ten (10) days after acceptanoe of this Proposalp the undersigned will execute the formal contract and deliver approved surety bonds for the faithful performance of the Contract, The attached bid surety in the amount of • to is to become the property of the City of Denton, Texae, in the event the Con- tract and Bonds are not executed and delivered within the time above set forth, as liquidated damages for the delay and additional work causer thereby. The undersigned acknowledges receipt of the fo3,lowing addenda: Respectfully submitted, Bidder r By ATTEM Address (Seal if Bidder is a Corporation) M • n r ITEM N0. KOj . BARMINIJPOR A, Oaf; There shall be furnished for installation as shown on the plans one 24" Model No, D BARMINUPOR screening and cutting machine as manufactured by Chicago hump Company, A oomminutor screening and cutting machine equal to that manufaotured by the Worthington Corporation may be furnished as an alternate to the BARMINUTOR. B b'rM, nutor1 The BARMINUTOR screening and cutting machine shall consist of a screen And U-shaped bare and a cutting unit which travels up and down the screen. The machine shall be installed in a channel with dimensions as shown on the Plans. The maximum continuous flow shall be 10,0 MOD, The unit shall be capable of cutting the coarse material in the sewage flow continuously without removal from the flow. The soreon shall be installed with its U-shaped members in a vertical position, 1. BARMINUTOR Comminuting Uniti The comminuting unit shall consist of a rotary assembly and a comb assembly. The rotating assembly shall consist of a horizontal shaft equipped with rows of outters held in place with olampe. Shear bare shall be provided on the clamps, The outters shall be of high grade tool s+.eel especially adapted for this service and shall pass through the slots of the U-shaped 'cars of the screen. cutters shall remove the rags and ooarse material from tThe he screenoandfpro- sent it to the comb for cutting. The clamps shall consist of two semi- oiroulAr sections secured to the shaft by set screws. The cutters shall be secured to these clamps by means of etude through holes in the cutter half. Enoh individual set of outters shall be removable without disturbing any other cutters on the assembly. The rotating shear bare on the clamps shall be made of high grade tool steel., They shall pass under the comb in such a manner that they will continuously out the rags and ocarse solids at the comb. The comb assembly shall be a part of the rotating assembly and shall consist of a row of individually secured combs, The combs shall be of high grade tool steel especially adapted for this service. Cutting shall be continuous and the comminuting unit shall be powered by a motor which can be submerged, mounted on the framework of the out.ting assembly. The rotating unit shall be chain driven at approximately 400 R.P,M, The machine shall be provided with extra outters and combs in the amount of 50'1% -if the total furnished on the unit, The comminuting unit shall be moved up and dorm on the asreen by a 116 Horsepower (minimum) motor, gear reducer unit and a chain drive. The motor and reducer unit shall be mounted on the top of the soreen frame, The chain shall be oontinuous, mounted on a drive sprocket on the reducer and an idle sprocket on the cutting assembly. T a comminuting unit shall be driven by a 2 horsepower (minimum) motor, chain connected to the rotating shaft. Rotation shall be continuous in one direction. The chain shall be enclosed in a hous- ing and shall be oil lubricated. M 501-1 • 24 DARMINUTOR Screen: The screen shall consist of fabricated sootionn of U-shaped steel bars 3/4" deep and 3/8" wide, welded to steel bRr space. • supports. The oross bars shall be placed in a horizontal position with the larger dimension in the direction of the sewage flow. The bars of the screen shall be spaced at 3/8" clear openings, The bars shall be U.-shaped in section to receive the cutters of the rotating unit and shall be tapered on the downstream side to prevent wedging at coarse sewage material botwoen bare. 'rho screen shall be supported in the channel by a structural steel frame, i 3. MRM.INUTOR Motors: The comminuting unit motor shall be 440 volt, 60 cycle, three phase, and shall be suitable for continuous and intermit- tently submerged service, The travel motor shall be 440 volt, 60 cycle, three phase, and shall be suitable for continuous dry service and occasional or periodic flooding. Controls for the motors will be as speoified below. C, Commin,utgri The Comminutor screening and cutting machine, which may be furnished as an alternate, shal. be a motor driven unit of the type that can be readily installed in a straight rectangular sewage channel, similar and equal to type V as manufactured by the Worthington Corporation. The oomminutor shall operate continuously and automatioally to screen and out or • shred coarse solids directly in the flowing raw sewage without requiring removal of the screenings from the channel. The oomminutor shall consist of a stationary, vertioal, semi-oiroular • screen with horizontal slots and an oscillating outter that pasties through a stationary outter or outtero located along the soroen for the purpose of comminuting the sewage screenings. The screenings shall be reduced to a size that will permit them to pass through the screen's slots. The rate of oomminution shall be such that no undue accumulation of screenings will result on the screen and cause excessive upstream head conditions. The comminutor shall be permanently oil lubriouted in order to eliminate the need of lubrication maintentnoo and to increase the life of all internal working parts. 1. Screon: The screen shall consist of replaoeable steal sections. The oomminutor shall be designed so that the outtero oan be removed for sharpening or replacing. The stationary outter or cutters shall be ad,just- nble in order that original rubbing contact may always be maintained, Ono extra sot of oscillating and stationary cutters shall be supplied. The oomminutor shall be of a size that will pass a design minimum flow of 0,60 MOD, avorage flow of 3 MOD and maximum flow of 10,0 MOD. 2. ))rivo: The comminutor shall be driven by a li horsepower (minimum) vertioa;l, squirrel angel induction motor. The motor shall be 440 volts, 60 oyolo, three-phase, suitable for outdoor service. The gearhead motor • shall hi mounted on a cast iron watertight cover pipe, rigidly bolted to the oomdainutor, forming a long coupled "L" arrangement. Conti-Ole for the motor w111 be as specified below, • 501.2 • 3. Appurtenanoes: The oomminutor shall to providod with a rectangular flange above the ou'Ung screen which shall support an overflow screen. • In order to protect the internal moving parts of the gcrnministor, a moroury seal shall be provided at the oscillating arm which 4rill automatically, without the use of electrical power or manual labor, prevent the leakage of Sewage into the oomminutor during abnormal flood or peak flow conditions which result in over submergence of the oomminutor. 1), t .t s 1. Barminutor Starters The starter shall be a full-voltage, non-revers- ing magnetio multi-motor starter in a NEKA 1 enolosure, for operation on 440 volts, 3 phase, 60 oyoles. The starter shall havo 3 phase overload protection for each of two motors and shall have a cover mounted OFF-ON switch. The starter shall be Westinghouse Class 11.230, or approved equal6 2. Comminutor Starters The starter shall be a full-voltage non- reversing magnetic motor starter in a IMMA 1, enclosuro, for operation on 440 volts, 3 phase, 60 cycles* The starter shall have 3 phase overload protection and shall have a cover mounted OFF-ON switch. • END OF ITEM i 501-3 • ITEM NO, 502 _ AIR BLOWCR UNITS A, a : Furnish two (2) eleotrio motor driven air blowers. Each blower shall have a capacity of not lose than 2500 CFM of air measured at blower inlet conditions of 21.9 psiA and 66 degrees F. when operating at a maximum speed of 2170 RPM, and discharging against ?,5 paiG pressure when measured at the blower outlet. B. love Each blower shall be a heavy duty, vertical, rotary, positive diaplaoem%, [toots lobe type, designed for continuous service as manufactured by the R nots_Connersville Blower Division, Connersville, Indiana, or approved equal. They shall operate without internal oontact, seals, or lubrioation, Horizontal inlet and aide discharge openings shall be drilled end tapped to match 125 pound ASA pipe flanges. The, two revolving impellers shall be constructed of close grained oast iron, provided with strong internal ribbing to prevent distortion during maohining or in service, and symmetrical with respect to shaft centers, They shall be statically and dynamically balanced to assure smooth operation, The casing or cylinder in which the impellers revolve shall be constructed of • close grained cast iron for high strength and dimensional stability, The cylinder shall be a one piece casting, corrugated for strength, bored to exact diameter, and fastened between the hoadplates by high tensile steed bolts. • The hoadplates and and covers shall be constructed of close grained cast iron. The shafts shall be machined from steel forgings, of the stub type, bolted to the ends of the impellers, providing liberal sized shafts for oonservative loading, Precision machined steel rim spur timing gears shall be located opposite the driving end, and shall accurately maintain tha impellors in their rotative position. The gears shall be of two ptaoe flanged hub design to facilitate timing and inspection, Blower shall be equipped with four heavy duty, double row, anti-friation bearings of conservative rating. Pe arings shall be mounted in duotile iron terriers. Lubri.oation for all bearings and gears shall be provided for by a full foroed-feed oiling system consisting of a direct driven oil pump, mash type oil strainer, oil cooler, adjustable type pressure relief valve, shook-mounted pressure gauge, reservoir located in bottom of gear hol:eing and equipped with a bull's-eye visual oil 16vol gauge, The lobe oil piping r system shall be garefully made of sweated copper tubing, • 502-1 Internal oil seals shall be a double arrangement to assure no eontanination of the air stream from the oil used in lubricating the blower. The seal arrangement shall consist of positive lip type shaft seals adjacent to the bearings, plus labyrinth seals where shafts pass through the headplates~ C. Blower A Purtenanoesl Each blower shall be supplied with the following appurtenanoess 1. Flexible shaft coupling as manufaotured by Falk or approved aqual to uonneot blower and motor. 2. Coupling guard. 3. Inlet snubber equal to Burgess-Manning Model BEC-10-L, arranged as shown on the contract drawings. 4, Cnmbinu,ton disoharge Silencer, equal to Burgess-Manning Model BEO-A-L-lu",, arranged as shown on the contract drawings. Inlet air filter, equal to Burgess-Manning Part No, filter shall be for instal),ation on the roof of the Blower Buding7andThe shall be of the general size and shape as shown on the plans. The filter housing shall contain four (4) 20" x 2011 x 4" Dollinger WKE-4 filters with S WF12 wool felt media, as manufacturer) the The Dollinger Corp., Rochester, N.Y, The individual filter elements shall be easily removable from the housing for cleaning purposes without the use of special tools. Access doors shall be provided. Furnish one spare met (4) of filter elements. 6. Two (2) flexible pipe connectors, one for the inlet, one for the discharge piping, as shown on the contract drawings, equal to U, S. Rubber Co. style 4169, An additional control unit shall be supplied for the dis- charge side expansion joint to restrict axial movement, 7. One (1) 6" oombiiist+on relief and unloading valve ao manufactured by Roots-Connersville Blower fear mounting in the discharge line as shown on the drawings. The valves shall permit manual unloading of the blower during start-up and provide relief by means of spring loading, 8. One (1) 10" oounter-balanoed cheokvalve for location in the discharge piping; valves shall be as manufaotured by (toots-Connersville Blower or approved equal. 9, One (1) 10" Butterfly shut-off valve for the discharge piping,, valve to be constructed of oast iron and equipped with 125# ASA flanges, suitable for 25 poi shut-off pressure. Valve is to be furnished with ohain-operated wheel, with self-looking exposed cast bronze gear and steel worm, complete with indicator plate identifying open and shut position. 10, One (1) set of Cadmium-plated anchor bolts, sleeves, and brass nuts. r 502.2 • 11, Electric motors of the squirrel o8gol opon, drip-proof, induction type shall be used to drive each blower, Each motor shall be suitable for 3 phase, 60 oyole, 440 volt power supply and shall be quipped with stan. dard Clas.9 A insulation rated 40 degree C rise with a 0 degree C ambient as defined by NfNA standards, One of the motors shall be 1200 RM goo RPM two-speed, two winding, constant torque design; the other motor shall ba 1200 RPM/600 RRII two-speed, single winding, constant torque design, Wanu- facturer shall be General Eleotri.o, Westinghouse, Allis-Chalmers, Louis- Alli3 or approved equal. Each blower and motor shall be mounted on a common structural steel base. 12. One W pressure gauge and accessories for installation across the inlet filter to indicate the pressure drop through the filter. D. dower III" & C arterA a NIII Each of the two starteve shall be a full voltage, non-reversing, combination airoui,t breI type magnetic multi-speed motor starter in a N13;4A 1 enclosure for operation on 440 volts, 3 phase, 60 cycles, Contaotore shall be eleotrioally and mechanically interlocked and each speed shall have 3 phase overload protection, Each starter shall contain a pneumatic time delay relay, 0_10 seconds delay on enorgization, oonneotsd as shown in the schematics to delay restarting after a power failure. Each starter shall have a oover-mounted SLOW-OFF-FAST selector switoh, • CND OF ITEM 502-3 ITEM N0,j__L0 . P~ UM~G ELUIPMENT A. Oe~t Pumping units shall be furnished in accordance with the following speeiflaations, All pumps shall be of boot quality materials and workmanship. Prior to the purchase of any pumping equipment, complete description of the equipment shall be furnishdd to the Engineer for appro. val, Where the product differs from the specified requirements and/or catalogue description, each point of difference shall bo clearly stated, Characteristic curves for pumps offered shall be submitted for approval. Curves shall show the capacity, head, efficiency and brake horsepower throughout the range of the pump, Providing other requirements are met, the pumps with the highest efficiency will be approved. Quotations on the pumping units will be reviewed and pump selections made by the Owner, but actual purchase orders for the pumps will be made by the Sewage Treat- ment Plant Contractor. B, SeWePg 1. 2e.0=411 ;,urnish three (3) vertical, Centrifugal, open-shaft sewage pumping unitsto meet the following oonditionst Un ki- M. Feet RPM it Capacity TDN Speed Minimum ~ U-, f. Q o r lr Max. 3260 Max. 48 Max. 1150 50 Horsepower Min. 350 Min. 41 Min. 700 Variable Speed 3125 48 1150 50 HP 3 '+^3a 56 870 100 NP RI F''u_m~t Pumps shall be opon=shaft construotion,non-ologging type and shall be complete with all auxiliary equipment and accessories as follows: Motor, motor mounting, shaft with Unive,real Flexible Couplings, and pump. Pump onsings, bearing housings, pump pedestals and motor pedestals shall be close grained oastings and machined with tongued-and-grooved construction. The pump pedestal shall be provided with a suction elbow and hand hole. A second hand hole shall be in the pump casing, Impollors stall be of cast iron, hydraulically and mechanically balanced. Each pump shall have two sets of doop.grooved ball bearings designed for both radial and thrust load. The bearings shall be mounted in a duet-and moisture-proof housing that is bolted to the pump casing to insure permanent alignment, Pump shafts shall be furnished with Univeraal F'lexihlo Couplings to compensate for any misalignment which might oocur during or develop after installation of tho pump and motor. The shaft shall be provided with a slip spline which will permit the removal of the pump shaft and impeller without removing any section of intormediato bearing and without removing the suction or disoharge piping, 503.1 a. Variiable~a~e~Drive; Furnish for Pumping Unit No, 1 a variable speed drive unit suitable far oontinucus variation of spend controlled either manually or automatically from a 3-15 psi air signal, The drive unit shall be a 50 horsepower Westinghouse "Reotiflow" unit or a 50 horsepower wound rotor motor with liquid rheostat as manufactured by Hlomatoher Corporation. The"Rectiflow" unit shall consist of an AC wound rotor component and a DC shunt wound component coupled together, with a shaft extension for pump connection. The control cabinet for the unit shall be complete with slip reotifier, field power supply, air-operated rheostat and magnetic type starter with the necessary oontaotors, relays and oeoondary resistors to start the drive. The starter shall have a control transformer and cover mounted, a HAND-OFF-AUTO seleotorewitoh and manual rheostat handle, Control voltage shall be 120 volts, single phase, 60 oyoleo, The Tlomiboher Corporation unit shall consist of a water rheostat, wound rotor motor and motor starter, The water rheostat shall oonsiet of a two- compartinent container with electrodes, level gauge and electrolyte. The level of the electrolyte on the electrodes shall Ni varied by means of a pressure system. The rheostat shall be oomplete with supp.y and exhaust valves, air compressor, full speed contaotor, heat exchanger and 3-15 Pei air-operated speed oontrol. Manudl speed control shall be provided. The wound rotor motor for the Flomatoher uW't shall. be open drip-proof construotion, with temperature rise in accordance with HEMA standards for the class of insulation employed. Motor shall be equipped with end shield mounted ball bearings. Facilities shall be provided for adding and removing grease without motor disassembly. The motor starter shall be a magnetic type, in a NDMA 1. enolosuro, with control transforinor, cover mounted HAND-OFF-AUTO sol,3otor switch, and three-phase overload protection. Power supply shall be 440 volts, 3 phase, 60 cycles, Control, voltage shall be 120 volt::, single phase, 60 oycles. b. C-Qn n Sa4od D`.. iiy Airnish ,for pumping units number 2 and 3 constant speed electric motor drives of minimum size indicated in tabula. tion above. Motors shall be of such size that the maximum horsepower require- ment of the pump operating throughout the range of heads specified shale not exceed the name plate rating of the motor, Electric motors shall be 440 volt, induction type, Code F, high power factor, 3 phase, 60 cycle for full voltage starting, with a speed as spocified, for direct connection to p'np shaft. Motors shall operilte continuously at rated load, voltage and frequency with a temperature rise not to exceed 400 C. measured by thermometer, or 500 Co, normal oonditions of vontilation, and seal level elevation. The motors shall be open, drip-proof construction. i 503-P Each motor shall conform to the design, oonstruotion, and performance requirements of the latest motor standards of the National Eleotrioal Manufacturers Association. The motor shall be deeigrned so that the service factor of 1.15 as defined by the NXMA may be applied. The motors shall be designed for full voltogel across the line starting. The general construction of the motor shall be as simple as possible, consistent with reliable and satisfactory operation. Workmanship, design, and finish shall be first class in every respect. The motors shall have thrust bearings adequate to carry the weight of the rotating element and the hydraulio thrust of the pump at maximum conditions with a liberal factor of safety. The motor base shall be machine fitted to the motor pedestal to provido even bearing throughout and proper shaft alignment. Oil reservoirs shall be liberal in size with gau ps ?or indicating the level of the oil in the reservoir and outlets for draining the reservoir, Motors shall be hollow shaft construction. o' kM2XVrLo .Ckne Drivel Furnish an emergency butane engine drive unit for pump Nc, 3 as shown on the Plana. The uni`' shall be a 6-oylinder butane powered, heavy duty engine with clutch powered take-oi.i similar to the Model 145-OZU as manufactured tV Waukesha Motor Company, Waukesha, Wisoonein. The engine shall have a maximum output of 142 horse- power at 1800 RPM for continuous full load operation. The angina shall be complete with all appurtenanoea, including lubrication, oooling, fuel, and ignition systems, clutch powered take-off, 12-volt electric starting and generating syatem, 36-month guaranteed 12-volt battery, trickling charger for 12-volt battery, and muffler and exhaust stack as shown on plans. The engine shall be suitable for driving the pump through a right angle drive unit. d. R_i ht Ante Drive Unit: N'urnieh a eombittaticn t type right angle drive for pumping unit No, driven by an motor or by a butano engi3 ne8astshowntonatheePlaned Theedrive shalleberio of ample size Lo transmit continuously the power required by the pump without undue power loss, and shall have the proper reduction gaar ratio to drive the pump at its rated speed. The gear drive shall be hollow or solid shaft typo as determined by the pump requirements and shall have thrust bearings of ample size to handle the maxi- mum hydraulic and dead loads from the pump impeller and shaft. The drive shall have a non-roversing ratchet to prevent roversal of the pump. Rotation direction shall be ooordinatod with the requirements of the pump and of the engine furnished. Force food lubrication shall be provided to all gears and bearings and shall. be capable of operation without extornal cooling of the oil. Furnish a stool spool base as required for mounting tho right angle drive. The top flange of the drive shall be of proper size for the mounting of the electric motor, 5033 • FurM.sh a horizontal flexible coupling between the right angle drive and the butane engine drive shaft, The coupling shall be a Watson-Spioer Type,WS short coupling or approved equal of minimum prn.otioal length and of ample slza for the load and speed of this application, e. R-Ow 5ewggg.PW LeUl Cast o (1) Gonerali Furnish an automatic control system to provide for control. of two variable and two constant speed pumps in response to changes in level in the pump station wet well, While only one variable speed and two fixed speed pumps will be installe6at the present time, the automatic control system shall be furnished complete to handle the fourth pump to be installed at a future date. This fourth pump will be a variable speed pump. The complete control system with level transmitter, indicator, and all control components shall be the product of one manufacturer who has experience in manufaot.uring equipment of this type and who shall assumo unit responsibil- ity for operation of the complete control system, The instrument manufacturer shall supply the services of a faotory-trained serviceman to oheok the installation and instruct operating personnel in its use and maAntenanoe, The control. system shall function to provide a proportional, change in speed • of the variable speed pumps and start and stop the fixed srxied pumps as the level rises and falls. Pump changes shall, take place as outlined in the tabulation below. Control system in general shall consist of a pneumatic level transmitter, a level indicator, and the necessary pneumatio and eleo- trical oontrol components required for the control system. (2) Level. Transmi eM1 The level transmitter shall be of the bubble pipe type, It shall consist of a constant differential relay and flow indicator with the output of the bubble pipe transmitter piped to an amplifying transmitter designed to produce an output air pressure varying from 3 to 3.5 psi in response to changes in suction well lewd between elevation 533,30 and 536.97 Level transmitter shall be Model BPT and AMD as manufactured by B..I-F Industries, Inc., or approved equal. (3) LLaW Indicators A level indicator shall be furnished and piped to the output of the amplifying transmitter to indicate level of raw sewage in the control band, Indicator shall have a 10-inch nominal diameter circular dial with uniformly spaced graduations over a 270 degree arc, Graduations shall road directly in feet from zero to four, Indicator shall be flush mounted on the front of the control oubiol.e panel. Indicator shall ise Model MU as manufactured by B-I-F Industriee, 1:ne4 , or approved equal. (14) M Co t, 1 Control system shall consist, of pneumatic relays designed to produce 3 to 15 psi output pressures over sot variations 503-l4 in level transmitter 014put pressure, In addition, neoessary pressure switohos, solenoid valves, sto., shall be furnished to perform th9 control steps as tabulated below. Wet Wwell Hhyation Pkmp Ureration 533-30 Start Variable No, l minimum speed 534,30 Variable No. I at maximum speed 534,47 Start Fixed speed No, 20 stop Variable speed No, 1 534,64 Stc. t No, 1 Variable speed at minimum 535.64 No, 1 Variable speed at maximum 535."l Stop No, 1 Variable speed and No. 2 Fixed speed and start No. 3 Fixed speed 535,97 Start ,,No, 4 Variable speed at minimum speed 536.97 Variable No, 4 at maximum apeed and Start Fixed speed No, 2 Control steps on descending level shall be in reverse order with adjustable differentials below the oontrol points tabulated above to prevent I:inting, Control System shall provide a maintained control oontaot for eaoh fixed opeed pump and a maintained contact for eaoh variable speed pump along with a 3 to 15 psi controlled air pressure output bulkhead oonnection for eaoh of the variable speed pumps, Control potentiometers or other devices with positioners to be operated by thiri oontrol output air pressure are specified as part of' the pump starting equipment, All oomponents of the oontrol system shall be mounted in an enolosed oubiolar type panel approximately 24" wide, 24" deep, and NV" high, All necessary awitohes, indicators, pneumatic dgvioes, solenoid valves, relays, etc, shall be mounted in or on this vubiole with all connections mounted, wired or piped to terminal, strips or bulkhead fittings. Control relays for operation of the four R) pump starters shall have 115 volt oontaot rating. Entire oontrol system for pumping operation shall be as manufactured by B-I-f Industries, Inn,, or approved oqual, f. Raw Sowa~e Pumn 5tar_~ers No, _Land Nu. s F:aeh starter shall be a full. voltego, non-reversing magnetic motor Starter in a NBbA 1 enclosuro for operation on 41+0 volts, 3 phase, 60 cycles. Lach starter shall have 3 phase overload protection, and shall have a control transformer for 110 volt control, Each cover shall have a HAND- OFF-AUTOMATIC nel.ootov switch cover mounted. 503-5 • Co. urn ^a7.ud~~ Pumna 1. CgUWI burnish threo (3) vertioal, centrifugal, non-clog sewage • pumps to meet the following 0011ditions: Unit Capacity TD11 Speed Minimum 1lP &c. _ Q, PM _ r . 1ti'M_ _ 2,rliatu~ l tax. 910 Max. 52 Mira. 2 Max. 1750 20 Horsepower 00 Min. 17 Min, 870 Variable speed 2 190.50 63 1750 30 Hp 3 2,000 58 1150 50111) 2. AMA: Pumps shall be vertical, centrifugal, 01080-00upled unite, nori-ologging type, and shall be cOmplete ith all auxiliary equipment and aooessories as follows: motor, flexible cowupling, pump, and pump pedestal. Pump oasings, bearing housings, and T*destal shall be alone-grained cast iron, The pump pedestals 6hall be provided with suction elbows and hand holes. Impellers shall be oast iron and shall be hydraulically and meollanioally bal&need. Bearings shall be ball bearing type designed for radial and thrust load and enclosed in a moisture and duet proof housing. Stuffing • r"e8 shall have grease seals+. 3. 2.yus • a. Variable Speed Drivo: The motor shall be a vortical normal thrust wound rotor induction typo ratod 1760 RIN 44cyclas, and shall be designed for adjustable varying-opond Promp1760tR114 to 870 RN-1, The motor shall Lo opon dvip.proof conotruoti.on with a sorvi•;o factor of 1.1, and a tomporaturo rise in accordance with NNIA :standards for tho olase of insulation employed. The motor shall be o1' a size such that the pump whoa operating through the entire range shall not exceed the motor name- plate rating, The motor shall be suitable for full-voltage starting with normal secondary resistance across the slip rings. I;lectrioal construotion of the motor shall be in aooordanoo with ourront M1:ilA, AL'1-;1? and A, 13A standards. Motor frames shall bo of opet iron or fabricated steel oonstruotion. `1'ho shalt shall be of ample sire from high grade machine steel and shall be suitable for direct connection to the pump. Collecto- rings shall be of high qunlity brass ra'lloy, ndoquate insulated with liberal apaci.ng. The motor shall have groaao lubricated ball bearings of amplo capacity to aeaure long life. Tho uppor boaring shall havo normal. down thrust olharne- tdrietics. Boarings shall be rostrained to limit and play to .01 inohos. f The bearing housings shall. be largo onough to hold suffioiont Im brioant to minimize tho need for froquent rolubrioation, but facilities shall be provided Per adding now grease and draining out old grease without motor dioassembly. The bearing housing shall be designed to protect against the or.tranoo of foa'oirt mattor into the bearings, or leakage of grease out of the bearing cavity. 503-6 The motor shall be tested in accordance with AIER' oommcrcial test procedures. The primary control shall be a magnetic non-reversing starter, full voltage, 440 volts, 3 phase, 60 cycle, suitably sized for the motor described above, It shall have 3 phase thermal overload protection and ur,dervoltage release, The control shall have a NEMA 1 enclosure and shall haws a control trans- former for 110 volt control. The secondary controller shall consist of a 100 amp, 11 point manually operated drum switch with right angle geared drive and panel mounted hand wheel with position indicator. The controller shall have auxiliary oon- teats to provide undervoltage release at any position except OFF, After a power failure, the starter shall automatically restart the motor at the last selected operating speed. The secondary resiRtor shall provido speed regulating with speed points based upon the speoified operating points of the oonneoted pump, The resistors shall be in Mi A 1 enclosures for mall mounting, b, Conetan e d ll~i Purnish for pumping units number l and 3 constant speed electric motor drives of minimum size indicated in paragraph C-1 above, All othor requirements specified in paragraph 13-3-b for oonstant speed raw sewage pump drives shall be applicable to the return sludgo pump constant speed drives, 4. Rott S1u.~g umn_utar+ers 2 & 3; Each of the two starters shall be a full voltage, non-roveraing magnetic motor starter in a NEMA 1 • enclosure for operation on 440 volts, 3 phase, 60 cycles. Each starter shall have 3 phase overload protection and shall have a control circuit traneformor for 110 volt control, Tho starters shall be Westinghouse Class 11. 200, or approved equal, D. s ~I2--Pai : The exposed interior of all castings shall be clcnned and rubbod to a smooth surface before receiving paint. The interior of all castings and parts to be paintod shall be given throe coats of an approved metal paint. All unfinished exterior iron work shall be oloaned, filled, and given one coat, of the boat quality "'Dotroit Graphite" paint, or equal, mixed with pure linseed oil, Paint on motor shall be exterior grade machinery enamel, The grade and dolor of paint used, and the workman- iihip, shall be onti,roly satisfactory to the Engineer, Finished parts shall be coated with approved rust preventing compound before shipment, The Ownor shall do the final painting of all exterior parts. III MAIM: Pump avid motor each shall have a standard nameplate securely affixed in a conspicuous place, showing the ratings, aerial number and name of manufacturer as well. ar other usual nameplate data, Mss__~lv_',,r~,~,. + iuont.r Units may be disassembled for shipment, belt tiro Contractor shall oertily that at the faotory, prior to shipment, the un;t has boon otimplctely assombled, each part to each adjoining part, and that the pump and motor have been aligned. i 503-? • 0. ho D aw n& t As soon as possible after issuanon of the purchase order for the oquip ment the Contractor shall furnish to the Uwner for approval, six (6) sets of foundation, er'ootion and other shop drawings, • F{o Teats of f' ~mninn U I including electric motor shall, be tested atfth©©specifiedototalpheado In addition to the above, all units shall be tested at various heads through- out the range of operation of the units as speoifiod. The offioienoy will be computed as equal to the water horsepower divided by the electric power input to the unit. Pump shall be tested in accord- ance with the Test Code of the Hydraulic Inatituto, Quantity of water shall be measured by Venturi meter, or by manuring device acceptable to both parties, Teats of motor shall be made in accordance with tho Standardization Rules of the American Institute of Eloatrioal gngineem. Tests shall be made at the factory of each pumping unit including the motor to be furninhed with the unit, and certified copies of test data, computed data, and test performanoe curves shall be submitted to the Owner, Motors shall be factory tested and certified motor reports of tests shall be furnished with other test data, Factory tests of completely assembled units shall be "witnessed" independent laboratory and/or other authorized roprosentative of theaOwner, The oast of the independent laboratory's services will be paid dirootly by the Owner, liowevor, in case of failure of any unit to moot the speoifionti.on requirements, the cost of laboratory services for ro-run toots will be 'baok-charged" to the Contractor by the Owner, • I, &.4,fl9' e T as i Upon the installation of the pumping unit and after the wiring has boon oomplotod, the Contractor shall or,nduot a performance test to demonstrate the rump oomplicas with all the roquiremonto of these apao'sfioations, Thin tout shall be conducted in a manner approved by and in tho precancel of the Enginoor, The purpose of the aoooptanoo test is to verify the satisfactory performance of each unit, Units will be chocked for axoessive noise, alignment, vibra- tion, general operation, oto, i,aoh unit must perform inan acceptable manner borers final payment is made by the City, J• worm ~r~„'~a 13r, t~r~itted tJi .tip nom; 1, 24111 The Bidder shall .furnish a complete description of all equipment offered under these specifications, including, catalogues, outs and pertinent engineering data, Where the Uiddar's product differs from the apeoifiod requi.roments and/or catalogue description, each point o1' differenao shall be olearly atatod. Thin requirement is sot forth to facilitate the review of bids and is not to be construed by the Bidder as wai,virV, any of the roquirnmonts of the speoifications, 9otti.ng and foun,.Aticn plans and d.'tmension shoots for the equipment offorod shall ba submitted with each bid, 2, Charaoterjgtic .O. zeal Characteristic curves for pumps offered • shall be submitted with the bid, Curves shall show the capacity, head, efficiency and brake htmopower throughout the range of the pump. Char. aoteristio curves for stumps shall have the capacity plotted as abaniasa and the op,)r:,bing head„ brake horsepower, and efficiency plotted as ordinates, 503-8 • Curves shall cover the full range of operation from outoff to maximum oapacity. • 3• Q_uarantoas ISFfi~ o iggs A statement of the guaranteed overall effioionoy for pumping units with electric motor drives at the spocified hoad shall be submitted with the bid as provides in the bid form. 4. ?RjLL5hoets Data sheets supplying the following information for each unit of equipment shall be submitted with the bid. Pin s l) Make and type lottor of pump 2 Spoed . R['M 3) Diameter and width of impeller Maximum diametor irrpellor for casing furnished ( 5) Diameter of suotion ( 6) Diameter of discharge ( 7) Shutoff` pressure ( Q Design of wearing ring ( 9~ Diameter of shaft at impeller (10) Design of stuffing boxes (11) Design or flexible coupling (12) Type of bearings (13) Diameter and length of boaring bushingo (14) Distance nontcr to oontor of bearings (15) Maximum horsepowor requirements of pump • (16) Wearing ring cloaranoo (17) Impeller oyo area (18) Not positive ouotion hood roquirod Mktg 'Us (19) Mako and typo lo'~,tor of motor (20) Broko horsepower of +no`or nt 40 dogroo C rise (21) Type of motor bearings (22) Maximum starting current in pur oont of full normal load 23) Motor effioienoy at full load 24) Motor offiolorlay at 3/4 load (25) Method of insulating and tmp rognating motor o0,18 (26) Powor consumption of spaco heaters 2is (27) Whi.ght of pump (28) Weight of motor (29) Weight of completo unit 503.9 • K. I;re~ A n E,na„inc, on T'he pumping units will be purchased and installed by the Sowago Treatment Plant Contractor. The manufacturer will be required to furnish the services of an oreotion engineer to sttporvise and assist in the installation. It shall be the responsibility of thotrootion engineer to verify final adjustment and place the units Into oporation. The cost of those services shall bo included in the lump sum bid for the units. L. Purchase of Pumgim Units: The Owner will receive and review quotations on the various pumping units. The bidders for the Sewage Treatment Plant Contract will then be advised by the Owner which pumping units are to be purohased for the pro,jeot, and actual purchase orders for the equipment will be issued by the Sewage Treatment Plant Contractor. Vj. C,gtnnarisori o ti aU The performance of the unite will be con- sidored in oomparing quotations. The overall efficiency of the units at the spooified total rated head and the performance of the units throughout the range of pumping heads will be considered. Diddors shall indicate in their quotation, the guaranteed overall efficiency of each pumping unit, i i • ITEM No. 504 _ P1iIM/tRY AN____I) FINAL CLRS A. 0ene alt huriiiah one (1) mechanism for a circular primary clarifier 55'-0~ iametor x7'-0" 8VID with 19-3" frooboard and having a bottom floor elope of 1 in 1211 and one (1) mechanism for a circular final,olarifie~ 65'-0" diameter x 121-0" SWD with 1+_3" freeboard and having a bottom floor slope of 2" in 12". The meoltaniams shall be of the center drive type, with center oage and rake arms which slowly rotate and move the collected solids to a sludg, poolcot in tho center of the tank and shall be designed for the influent to enter the bottom of the center column and flow upward to a point of discharge near the water surface. The equipment for each clarifier oomprisoe, in genoral, a stationary steel influent column; contor oago; soraping arms with blades and squegees; skimming, device and aoum baffle for the primary clarifier; center well with supporting struoture; center moohaniam with bearing assembly and drive unit; torque indicators, alarm and motor outouta; a stationary walkway with handrailingl effluent weirs; galvanized anchor bolts; and a r3teel effluent launder for the final clarifier. All structural. steel used in fabrication of the equipment shall conform to the Standard Speoifioations for Steel for Bridges and hu lingo, ASTM ilesignati.on A-q. Fabricated assemblies shall be shipped in vei large son. ti.ons as praotioal, proporly matoh-marked and knooked clown for shipment. All a hop wolding shall be shi.olded arc welding and shall conform to the latest standards of the American Welding Sooiety. r Clarifier meolianiame shall be equal to that manufactured by Process Engineers Incorporated or by tho Dorr Company. 1). M,3coi~ nip~t The mechanism shall oonaist of two sludge raking arms attached to the cantor oage and supported from the drive head which shall bo mounted at the top of the center ool.umn, The moohaniam shall be ro- tatod by moans of a rear bolted to a turntable apider to which the oontGv cage with arms shall. be attached. The gear shall Lo driven by a pinion on the lower end of the vertical output shaft of a motorized epeed roduoer mounted on a torque plate which shall be prevented from turning by a stop lug on yoke supported by and deriving; its torque resistance from the vertical stationary center column. C• Cgi11 Cu y it t The stationary conter column for the primary clarifier shall ixs of minimum 10-8" diameter and for the final clarifier of minimum 20 0" diameter. Contor ctolumn shall be of roinforcnd steel plate oonstruc- tien 3/6" thirknons, with support £latirgos top and bottom for bolting to foundation and for supporting the center moohaniam. The upper portion of center oolumns shall be provided with diffuser port openings to give uniform i the nflow into the tank. Vertical 5" stool, channels welded to the outside of strengthutotsucolumn pport all operating stiffen by column thco machaniem provide i under full f 504-1 operating conditions, oalvanizod anohor bolts for oontor column shall be provided. D, In r A sembl~;° The center mechanism shall oonsint of the drive unit witYs alarm r,nd torque outout switohes, oolumn cap and main bearing assembly, spider, yoke, housing, suitable lubrioation fittings and supports for floor plate and inner end of v lkway, The drive unit shall consist of a totally-enolosed motor mounted on a vertical speed reducer with a 2-5/8" diameter downward extending output drive shaft fitted with a pinion gear engaging a mating goer bolted to the turntable spider to which the revolving oage with sludge removal arms shall be attached. The speed of the rotating arms shall be ,045 RPM, The main gear shall, run in oil and be made of oast iron or Meehanite with a tensile strength of 40,ooo lbs, per square inch, The motor-reduoer shall be supported on a torque plate with a torque spring and load in- dioator arranged to show the amount of load on the gear and with an ad- justable cutout so the maohins oan be stopped at any desired load. The alloy steel out-tooth pinion shall be mounted in the yoke with ball bearings at each end to eliminate overhung load oonditiona on the reducer shaft, and shall be arranged so that when the speed reduoer is bolted to the torque plate, the motoe_raduoer output shaft shall enter the bore of the pinion where it shall be keyed to the pinion to trrv+smit the torque to the pinion, main gear and sludge removal arms, The torque plate shall, be arranged for free revolutions, about the center of tie pinion by moans of a ball bearing so that when the reducer is bolted to the torque plate, it shall be free to turn about its output shaft within the limits of movement established by the torque indicating spring. The torque plate bearing shal:Y be accurately fitted to the torque plate so that when the roduoor is mounted, there shall be no movement of assembled parts except the movoinent allowed by the spring-ad,jueting bolt, Tho torque plate shall bo fitted with an extending arm nrrangod to bear against a spring secured to the yoke in such a way as to compress the spring when the torque loac; is applied.. g. Torcuo 3:tor, AZa~m and Motor Cu ouJl To take care of overloads, the motor-rloduoer shall be bolted to a torque plato supported on a ball bearing and free to turn about its output shaft within the limits of move- mont established by a torque indicating springy;. The torque plate shall have an extending arm that can compress the torque springy; provided with adjustablo cams to contact limit switohes for sounding nn alarm and cutting off the motor at predetermined loads. The limit switches shall be mounted in a watertight, vapor proof, gastight cast braes hourA ng, 81, lnL,uon Colu n runt The influent oolumn dap shall be of flanged oast iron conatruotion for bolting to the upper flange of the influent i 504.2 d column. It shall have an enclosed machined seat for the main bearing and an intogrally-oast spindle extending upward from the oonter of the flango, a , Y,4ke and SaindleI Yoke shall be of t~oohnnito or high-teat oaat iron and shall be accurately machined to fit around the torque tube spindle and keyed to it, Spider shall be of heavy oast Lton construction with a machined Beat for main bearing, with a bronze bushod bore in the cantor to fit around the column cap spindle and with a machined seat in the top flange to which the gear shall be bolted. If. iJ_ a7kwavo The Walkway with handrailing shall he of welded construction and shall have ample strength to withstand all conditions encountered. The walkway shall oonc,ist of two main stringers with checkered floor plate welded to the uppor flanges and with channel arossties welded between the stringers. Handraile 42" high made of 1~" pipe and having a double row of horizontal pipe shall be furnished, Walkway shall. be 36" wide and designed to take none of the loads oausod by rotation of the sludge scraping airmi, I gftat2t j j The center cage shall be of welded steel oonstr'aotion with vertical angles at the oornere, bracing tie angles on the sides and shall be provided with connections for the two sludge removal arms and feedwell supports, The top of the cage shall be bolted to the turntable d spider at the cantor if mechanism which shall revolve the cage with the attached arms. J. 21.. Removal ArW The mechanism shall include two sludge removal C arms 0E' steel b ruction With 3/16" stool rak-ing blados and adjustable spring brass squeegees bolted to the blades, The blades shall be properly spaced to insure a complote raking of the bottom twice ouch, revolution. The arm members shall be of adequate size to be capable of raking any normal sludge deposit which may be encountered within the normal range of flows without distorting the arms oe center cage. K. 4r___Wo,1 t 'rile oonter wolls for primary clarifier shall be 1.01..0" diameter x 4'_0 submergod side depth. Tho caner wall for the final clarifier shall, be 140.0" diamoter by 61..0" submerged side depth. Center wells shall be suppoirtod on the rotating scraper arms and two structural t.ru88e8 attached to the cantor onge, Tho wells shall be of solid rolled stool plate of 3/16" minimum section with top and bottom rim angles and intormodiato vortical. 01'16le atiffonorn, The well shall have a deflector plate attached to the bottom and the ontiru shall shall be water ti.g:t after field welding and assembly. L, lMInr J7__-_UJUj For the primary nl.arifier there shall be furnished a skimming device arranged to aweup the entire surface of the sedimcnta- tion compartment, Automatically removing soum and floating material into fixed at steel ahown the plate oomplatr, with aupportsiandlgalvanizedaanohon bol~tabasf 504.3 • on the drawings shall be provided, To balaneo the weight of the meohanism on the main bearing, the skimming device shall include two revolving scum skimmers with supports and scum sorapern equally apacoci on the arms, Scum skimmer shall be supported on a steel structure attached to the rotating arm and shall consist of a steel plate extending from the center well to a recessed scum pocket at the outer end of the traveling skimming arm, Each scum skimmer shall be equipped with a hinged scum scraper with neoprene wipers arranged to positively rake all scum from the pocket into the scum box with aach revolution of the mechanism. Scum box shall be of welded steel construction, supported from the tank wall and connected to the scum sump through a scum pipe. The assembly shall, have an approach section, a sloping ramp, scum trough anti vertical steal sides, The scum scrapers shall maintain contact with the scum baffle while rotating around the tank wall nnd, upon approaching the scum box, trap the scum in a scum enclosure and serape the scum up the ramp into the scum box, M. 4 r P___ gtest Weir plates shall bas 3/16' thick steel, complete wA th bolts and wrought iron spacers, and as indicated on the drawings, They shall have oversize square holes for fitting to galvanized anchor bolts and rn1,}uating water level, in the .field. They shall be rolled to proper • radius in the shop. N. MQJM,kWl The motor shall be of ample nizo to operate olnrifier moohaniams and not loan than 1/2 11P, It shall, be totally enclosed, shall comply with NENA standards and shall operate on 3 phase, 60 oyole, 440 volt, 0. Zcn Pain in t Remove runt, duet and scale, as well as all other loose or foreign subatanoos by cloaningi wire brushing, chipping or anndblanting, Apply one (1) coat of TNERT0L 11ustinhibitive Primer No, 621, 1'~ i'~''m n ! i__iar ,,Lar ,fit laoh starter Mall be n lull voltngo, non-reversing, combination oirouit breaker type magnetic motor starter in a NEMA 4 onolosura, for operation on 440 volts, 3 phase, 60 cycles, Paoh atorter shall contain 2.51171 relays and a control circuit ormer shallfhave afooverbmovolt untedonlarm with 40 1,1 ~1 I and capacity, nelootor starter switch, A wiring sohematic is ahown on the Plans. The control shall perform an followsl A light, overload enorgizos the alarm born which may be s'.lonocd by pushing the 11651T button. Additional ovorloadi.ng onergizos the second relay which atops the motor, Q' g r1.gL A.."1:1~19x The two horns shall be Federal #31, or approved etiual, watertight, for operation on 110 volts, 1 phaso, END 010 11T;14 • X011-1a • ITEM NO, 505 Alit DIFFUSION FQUTP1 ENT • A. Oo er t Air diffusion equipment shall be furnished for the aeration basin as detailed on the Plans and as speoifi,ed t,aroin, The equipment shall be Swing Diffusors as manufactured by the Chicago rump Company, Chicago, Illinois, or an approved equal," Raoh air diffusion unit shall comprise a suitable swing ,joint assembly for suspending and raising the complete unit out of the tank for accessibility from the tank walk, one hangs air feed pipe, one diffusor tube header, and the air diffusion tubes with proper conneoting devices. Portable hoist shall be furnished for raising units out of the tank. The air diffusion units shall be so constructed as to allow the diffusers to be swung from the aeration tanks and to be accessible from the tank walls without drawing down the level of the sewage in the aeration tanks, In the raised position every part of the air diffusion units shall be raised com- pletely out of the tank contents. S, w Joint Agg mblvt Each swing joint assembly shall comprise a galvanized steel feeder manifold, and one duplex elbow fitting swing joint with built-in valve, One feeder manifold shall servo two air diffusion uri',ts when they are located opposite each other on the same tank walle. The feeder manifold shall be attached to the air main by means of a flanged aonneotion-. • A oast-iron elbow fitting shall be mounted in the coning and shall be connected at its lower end with the feeder manifold, This fitting shall serve as an anchor for the swing joint, and at its upper and comprises the stationary member of the swing ,joint, A movable fabricated oast-iron elbow fitting shall interlock with the stationary elbow fitting to oom. priHO the swing Joint, The two sections of the swim joint shall be fitted with wearing rings to provide aau air tight connection, The movable member of the swing joint shall be connected to the hanger pipe by a oast-iron screwed connection. C, flangpr Food Pinesi Each hanger pipe shall comprise an upper section and a lower seotion of galvanized wrought iron pipe jointed by a oast-iron knee oint. Connections between pipe and knee Ooiht are to be screwed connections, he knee joint shall be equipped with wearing rings to provide an air tight connection. The hanger pipe shall serve as a support and air food pipe to the diffuser tube header, 505-1 ~~r • D. J.f Dfusar Tuba I I aa mss Each diffuser tube header shall comprise two lengths of galvanized fabricated steel pipe, flange connected to a cast- # iron T.fitting which is sorew-oonneoted to the hanger pipe. Each diffusor tube header shall have bosses drilled and tapped, to acoommodate the diffusor tube assemblies, 0 1 I'ittinxa; There shall be furnished bell and boll fittings of the proper sizos, each with a flanged boss to provide connection between the air main and the feeder manifold. F. f_'roteation of C~at~-Iron ann .~~1 F~}ttingeACains . fi- u and Cor=J2 t All oast-iron fittings inolud7ld in the air diffusion unite shall be given one external and one internal coat of shop paint. All steel pipe included in the air- diffusion units shall be hot-dipped galvanized, Bolts and nuts are to be olootro.galvanized. 01 D ffuse Tube A,rbl~I The diffuser tube assemblies .3hall be screwed into openings in t e headers heretofore described# raoh assembly shall be provided with an integral orifice for controlling the rate of air flow into the diffuser tube, Ne EgXLqW&..lfai jt There shall be furnished one portable hoist for raising air diffusion units from the aeration tanks. The hoist shall engage the q~ movable member of the swing joint and raise the unit by exerting leverage upon the movable member. Means shall be provided to hook the hoisting membar 'tin place before the hoisting operation is begun. The ohaesis of the hoist shall be of welded tubular stool construction with necessary fittings and brackets welded thereon. The chassis shall roll on oastare with whoolo and shall be furnished with an operating handle con- trolling one vaster for ease t1 maneuverability. Casters shall be spring- supported to allow for irrogul1Aritics of tho ooping ourfaoo,s of the aeration tanks, The hoist shall be designed to attach to the swing diffusor fittings without the use of tools and shall be, when attaohad, automatically looked in posi- tion. The hoist shall be easily removed when the awing diffu,30r is in either the "up' or"down" position, The hoist shall be hydraulic, air-operatod. Suitable air lino with valvo , shall bo provided at each awing, unit for the supplying of air to the hoist, All parts shall be designed as light as possible, oonsiatent with strength requiroments, and ease of maneuverability. z. Air.D f s r TFtbb @r 7.. QaR s Air Diffuser tubes shall be mounted on each diffuser tube header in aooordanoe with the spacing and number as shown on the drawings. 505.2 r 2.4 a DimensiprM: Each tube shall be composed of a porous media made from grains of fusod crystalline alumina held together with a * ceramic binding material. Tubes shall be "A.loxite" as manufsutured by The Carborundum Company, or an approved equal, Connection of the diffuser tube to the diffuser tube header shall be made by means of an adapter fitting with an integral air flow control orifice, The tubes shall have an outside diameter of 2j", inside diameter of 1-3/4"1 and a length of 24", The opposite ends of all tubes shall, be parallel and normal to the tube axis, The following dimensional tolerances shall be heldt Outside Diameter . , , , . , , , 1 1/16" Inside Diameter . . , , . , , , k 1116" l,ongth . . . . . . . . . . . . . 1- 1/16" Tubes shall be free from appreciable warpage and from imperfections such as deprossions, oraoke, chipping, spelling, or other structural defeats, Opposite ends shall be parallel and normal to the tube axis+. 3, t►niformitvt The tubes shall be designed and constructed in such a manner that they will have the following rate of diffusion oapaoity, Rate of Diffusion per 'Dube 01,14 er M,,g~,imum 4,0 6.0 Ei.0 Diffuser tubes shall be rho istnW-, to aoide and alkalinos normally used in cleaning the tubes. Each tube shall have sufficient s'srangth to withutand an internal prosauro of 15 psi in exooss of the external prosauro acting on the tube, The tubes shall have a permoability rating i~f not loss than 36 nor more than 44. The permeability raising is defined as the number of ou, ft,/min. of air,at 70° f'', and 1.0% to 25% relative humiolity,whioh will pass through an area of 1 sq. ft. (bated on median diameter) of diffuser tube to the atmouphore, under a differential pressure equivalent to 2" of water within the tube when it is tested dry in•a room mai.ntal.ried at a temperature of 70'F., and a relative humidity between 30% and 50%. All tubes shall be tested for permeability by the tube manufacturer who shall ro,jeat tubes which do not have the specified permeability, The selection of tubes at the point of manufacture Mall be controlled on the basis of permeability tests, and o,, the basic of conforming to the ro.. qui.rcmenta, as statod heroin, when toated for head loan, and uniformity, The tubes shall be tooted in clear wate.7 maintained at a tempnraCu~*o of 700 l'„ plus or minus two degroen f',, and the tempuratLro of the air supply shall be maintained at 700 P., plus or minus five degre,os F. At each point of test, the air shall be allowed to flow at a oonstant rate for a minimum r 505-3 • of three minutoe before the reading is taken. Whon testing the tube for head loss and uniformity, the blow-out effoot etiall bo eli.minatsd by inoxeaaing the flow of air for each oonaeuutive reading fr'oin that of the previous road- A ing. The requirement for head loss and uniformity shall be as follows: a, 1 Loss - the differential pressure aoroos the diffuser media when the tube is discharging air at the rate of 6 o.f.m., with 6" of water over the oonterl.ino of the tube, shall not be loss than 7.0" nur greater than ).0'1, b. U i o m.t : All tubes shall be uniform throughout the entire structural and free from holes or other imperfootione which may cause non- uniform distribution of air. Tests shall be performed at the factory as follower Uniformity of distribution shall be determined when tho tube is discharging air at a rate of approximately 6 o,f,m,, The flow, corrected b to 6 o,f.mo for the full tube length, shall be determined for eacho1/6thon length of the tube. The tube shall be ro,jected if the disoharge from any 1/6th length io greater than 1,50 o,f.m, or lose than 0,50 o.f.m, The Engineers shall have the option of requiring a certified complete report, A which shall include the results of all required toots, to the effect that all tubes art within the terms of thooo spaoifioations in every respect, J. Altotia a Eau1MWnt: 1, Generale Bidders are roquostud to submit alternate proposals for a fixed header air diffusion system as dataileid on thu Plana. Each air diffusion unit shall oomprioo one angle valve, apooial fitting for oonnout- ing air main to foodur manifold, atr diffuserci, and nooossary hoador supports and anolior bolts. All hanger air food pipi.nt and diffuser ho,iador piping will be furnished by tho Onnoral Contrnotoi, P r, thu rf!wago treI,tMorit 1)10111. Me diffusor equipmont manufaoturer ohal l f lArni-h of 'loto ';Boll di,awing,i detailing piping lengths, drillings roquirud for dif'fc,sers, and till, other- infurmati.on required fox purohnHe and i,nstallhl,ion of items n)t bci.nl; furnished by the tnanufaoturo*1. 2• QX;ajj: All supports, anchor bolts and nut, ~ 11o hot r31.101prod t►al,varlizod. Ai.rmain fittlugn shall bo oast iron and sh. k j _j„ liven ono external and one internal oout of shop paint. 3. it D1.f`f._ _Url_e ~11f Air diffusers for the fixrd hr~adco ayout 3ha1.1 of the non-olog type, tend shall be Walker Proc,r~r too is I.huipm,y rL Company `;par. ,jers" or an approved equal. Diffusers shall bo donignod to resist ufl.ogginf, !rom solids in the tiewago, amt shall not br, aub,jrsnt to internal ';i.oninf; from air impurities or header ioale, • A 505-G • K, Shon__ Pa___ i.nt~j-*9 Remove rust, dust and scale, as well as all other loose or foreign substances by cleaning, wire brushing,, chipping or sandblasting. Apply one (1) coatcf TNERTOL Rustinhibitive Primer No. 621 to the exterior of diffuser assembly including header at bottom, swings, housing, eto. END OF ITEA1 • • • 505-5 • ITEM NO. 506 - OR T CHAMASER EaUlPh1ENT A. s erajt Grit collcoti.on equipment to be furnishod under this item comprises a spiral conveyor, bucket elevator, air diffusion equipment and blower as detailed on the Plano. The grit collecting system shall be as manufactured by the Jeffrey Manufacturing Company, or approved equal, The spiral conveyor shall move the grit to the end of the grit chamber and discharge it to the bucket elevator, which shall raise it to the point of discharge. B. Sanf,lypr_1?d_ Ve t The elevator shall consist of a single strand of chain passing over the top and bottom sprockets, with steel buckets attached to the chain, driven by a motor and speed reducer. The elevator shall be of the continuous bucket type with the lower bottom shaft extended for driving the spiral conveyor. It shall operate at a speed of approxi- mately 5 feet per minute, The elevator, above the top of the grit chamber, shall be completely enclosed, and shall be complete with discharge spout as shown. The unit shall have a capacity of 20 cubic feet per hour. All structural steel shall conform to the "Standard apscifications for Structural Steel for Building" of the American Society for Testing Materials. All iron castings shall be of tough, close-grolned, tray iron, free from blow holes, flaws, or excessive shrinkage. The elevator housing shall be #12 gauge steel and structural members and stiffeners shall be of steel not • less than 1/4" thickness. The olevator chain shall be of 4" pitch Pintle type Supermal, or equal., with an ultimate strength of 339000 lbs. The drive chain shall be 2,609" pitch steel thimble roller chain with an ultimate strength of 18,000 lbs. Elevator buckets shall be Style I'D" made of #10 gauge Corten steel, h" x 5" x 7-3/4", with perforated backs. The spiral conveyor shall be provided with a coupling PH ht. It shall have 3/4" steel sectional flights, 9" diameter, mounted on 2-112" diameter pipe. A 1/411 plate baffle and shroud shall be provided at the discharge end of the spiral to limit the feed to the bucket elevator and thus prevent over- feeding or stalling. All bearings shall be babbitted, -nd thorn above the water line shall be provided with suitable Alcmite industrial type lubrication fittings. The, head ahaft nhall be equipped with take-up bearings with an adjustment of 9 inches. The drive unit shall consist of an all motor type helical gear reducer. Gears shall be made of ntoel with tooth out to r,oourate shape. They shall be enclosed in a heavy, moisture and oilproof case. The motor shall be General Electric, or equal, NEMA Design I31 totally enclosed with moisture- proof impregnated windings. Current characteristics shall be 440 volts, 'hree phase, 60 cycles. The motor shall, be not less than 1/2 horeopower. The driving mechanism shall be enclosed in a suitable #14 gauge guard. • All submerged metal parts except bearing surfaces, shafts, and chain shall be painted with one shop coat of metal primer. Primer shall be V ERTOL Rust Inhibitive Primer No. 621 or approved equal. Bearing surfaces and shaft shall be coated with grease and chain shall be dipped in rust inhibi- tive slushing compound, All anchor bolts shall be hot dipped galvanized steel.. 5oW C, r D ffuion L' iMM) 'it: Air diffusion equipment shall consist of angle air control valves, riser pipes, fixed air headers, air diffusers, and necessary supports and bran kets, all as detailed on the Plans. Air diffusers shall be non-clogging type and shall be "spa tiers" as manu- factured by Walker Process Equipplent Co., or approved equal. D. blows : There shall be furnished an electrin motor driven rotary air blower similar and equal to Type AF as manufactured by Roots-Connersville, The blower shall have a capacity of not less than 60 ofm when operating against a pressure of 4,0 paig measured at the blower outlet, The blower shall be of a heavy-duty, positive displacement type unit having bottom suction and top discharge, The rotors shall operate without internal con- tact or lubrication. The blower shall be direct connected to a 2 tip (minimum), 440 volt, 3 phase, 60 cycle, motor through a flexibl% ocupling, and motor and blower shall be mounted on an integral base plate. The blower shall be equipped with a spring controlled, adjustable, pressure relief valve, an inlet muffler-filter and renewable filter elements, and a straight flow discharge muffler, all as shown on the Plane, E, OZ 't ev S i Each of the two starters shall be a full voltage non-reversing combination oircuit-breaker type magnetic motor starter in a NEW, 4 enclosure for operation on 1140 volts, 3 phase, 60 cycles. Each starter shall have 3 phase overload protection and a cover- mounted IWO-OFF-AWOMATIC selector switch, EM OF ITEH • t 5x6-2 111, iM NO. 507, - CHLORINATION EQUIPMENT A. General: This item covers the furnishing of Chlorination nquipmont comprising one (1) 2,000 pound per day capacity chlorinator and accessories, oolution manifold and valves, rotameters, pressure reducing valve for chlorine gas, oonverter for automatic control of chlorine feed rate, chlorine solution diffusers, and chlorine flow recorder. B. Chl zLing or: Chlorinator shall be of the solution feed, vacuum type, equal to the Series A_711 chlorinator manufactured by Wallace and Tiernan, Inc. Chlorinator shall have a maximum capacity of 29000 pounds of chlorine per 24 hours and a feed range of Z) to 1. The rate of chlorination shall be automatically proportioned by eignala from a flow tube in the raw sewage line, and shall have provision for manually adjusting the chlorine dosage. Chlorinator shall be equipped with an orifioe and rotamoter for operation over a range of 25 lb, per 24 hours to 500 lb, per 24 hours. Accessories shall include an indicating flow motor, vaouum relief, safety vent, pressure gauge, and ve-,uum gauge. The operating vacuum shall be created by a water jot injector. Water supply pressure shall vary from 40 to 60 psi, 0. Solution Manifold, Throttling valves and shut-off valves, in the solution manifold shall be rubbxir lined diaphragm valves. Provisions shall r be furnished for mounting valvos, rotametore, and manifold pipe and fittings on a the wall behind the chlorinator. H otameters shall be installed in bash solution line for the purpose of indicating the flow to each point of application. Manifold piping and fittings shall be polyvinyl chloride A plastic equal to Typo I manufactured by Kraloy.Chemts,ol Co., Santa Ana, California. D. Chlurine Flow Recorder: Furnish sh a Type A_766 olnctrio chlorine flow recorder and totalizer for surfaoe mounting which shall show rate of chlorine flow in pounds per 24 hours, Charts shall be twelve (12) inches in diamotor, and clootrical.ly driven by a 120 volt, 60 cycle electric olook. E Solution Dj_'fusors; uitablo rubber_linod and covcr9d type diffusers shall. be r-nrni'shod for installation in manholes at the points of chlorine application. Diffusers shall be of such design as to adequately distribute chlorinee, t.n the sowrgo pausing through the manholes. Brackets shall be furnished for scouring the diffusers tc the manhole; walls or floor. F. Pressure seducer: Furnish a pressure reducing valve and chlorine gas valves for manifolding two (2) one ton chlorine cylinders as shown on the Plans. Pressure reducing valve shall be similar to Type U-220 as manufactured by Wallace and Tiernan, Ino, END OF ITEM • M 507.1 • 1TRN No. 508 - "LOATTN(} COVIs'R A. sera: There shall be furnished one (1) cover to fit digestion e tank, eighty (80) feet inside diameter. Coves shall be arranged to float directly upon the liquid contents of the tank, thereby providing positive submergence of all materials which tend to float. The cover shall be designed to receive a wooden roof dock with "built.up" roofing. The cover shall bo made up of fabricated assemblies which shall be set up in the shop, match marked, and knocked down for shipmont. The cover shall be as manufactured by Pacific Flush Tank Company, Chioabo, Illinois or an approved equal. The cover shall be of ssuoh design to maintain a minimum gas pressure of C inches of water. B. Ute__ r,.,ialst All structural steel used in the coves equipment shall conform to the requirements of Standard Specifications for Steel for Bride;es and Buildings, A.S,T.M, Designation A7-52T. C. _ oedis and Stress: All plates to be included in the cover shall be of-1717 minimum thioPm ess. All structural members shall be designated to allow the cover to be self-supporting when resting in an empty tank (with the maximum pos;3ible loadings as follows: Dead Load and roof lond......11......1.I.....35 lbs/sq.£t. Live snow and vacuum load 50 lbs/sq.ft. Total ....................13~ lbs/sq.ft. The maximum allowable stressos under the above conditions of loading shall not exceed the limiting streesos as set forth in the A.I.S.C. specifioAtions for etruotural stool for buildings, cog follows: Tension 2U, 000 lbs Shear '••'•'•••.•••••/sq.in. Comprceeion ................,.............,17,000 l'us/sq.in. With maximum of 4179000 - 0.1185 12 r2 U. A,sserblis3 Fabrioated assombl.ion to form the completed cover 3ha11 W .chipped in as large sections as practical, and shall consist of rim plato aunomblin s, truss aesomblios, gas dome assembly, ceiling plate sections, manhole assembly, roofing support purlins, and miscellaneous connection members and appurtenances, There shall be provided in addition to the main assemblies, drain sumps in the outer ooiling section with access wells above, entrance hatch and cover, manhole, sampling wells with gas.-tight quiok-oponing covers (one sampling well to stop at ceiling plate and one sampling well to extend to the bottom of rim plate), top and bottom rollers, gas pipe housing, combination pressure and vacuum r 508-1 • relief, and handhole, The generrl features of the cover shall ^onform to the details shown on the Plans, E, W01 dine: All welding, both shop and field, shall be shielded aro r welding and shall conform to the latest standards o.C tho American Welding Society. F. rho-- Painting: All structural steel shall be given one (1) shops coat of lnertol Rust Inhibitive Primer No, 621, except no shop paint shall be applied within three (3 )inohes c° all seams to be field welded. END OF ITLM • 500.2 ITEM NO, °'0 GAS }3"URy C Ipp~N' A ACCESSORII S A. W11DGas Burnori There shall be furnished and installed at the location shown on the Plans one pedestal type waste gas burner having a six (60) inch connection for the main burnor nupply and a one (111) inch connection for the pilot. The complete waste gas burner shall include a separable base with anchor bolt for installation on the concrete foundation, removable support pedestal of standard steel pipe filled with suitable insulating material and flanged for mounting and bolting to the base after the base is installed on foundation, removable burner bowl with window port for observing pilot flame, ignition ring, and pilot orifioe. The waste gas burner shall be capable of passing 20,000 oubie feet per hour of sludge gas at a pressure drop not to exceed 1/2" water column, The pedestal type waste gas burner shall be as manufaotured by Paoifio Flush Tank Company, or an approved equal. 8, Combined PrBS$ure Rel}ar >N+s, wb . , be furnished and installed one combined pressure r lief withewastelgas flame trap assembly as shown on the plans. The unit shall, be provided with six (6") inch inlet and outlet oonnootions. The relief valve shall be actuated by meEn s of properly protected diaphragm of the adjustable weighted type to allow acourate oontrol of the gas pressure. The lower side of the diaphragm shall be provided with a oonnection for l/2" O.D. tubing that shall be oonneotsd tc, r3 location in the gas piping system as rooommended by the equipment manufaoturer. The upper side of the diaphragm shall be furnished with a flame cheek with a connection for 112" O.D. tubing that i shall be oonneoted to an outside atmosphurio vent, The combined pressure relief with waste gas flame trap shall be capable o.£ passing 18,500 oubi;, feet per hour of sludge gas at a pressure increase of not more than 112" of water oolumn. Adjusting weights shall be provided, This combined unit shall be as manufactured by Pacific Flush Tank Company or an approved equal. C. nrijTro: manually operated drip traps shah, be furnished and installed at the looations shown on the plans. Drips shall be as manufaotured by Pacific Flush Tank Company, or an approved equal, The drip traps shall consist of a pot oasting having a onpao,ity of six (6) quarts, a gasketod oover and rotary valvo. 'tie drip trap shall be of the manually operated type and constructed in uueh a manner that when the connection to the gas line is open, the drain line is automatically closed and vice vorsa, Tile units shall be provided with orte (1") inch pipe threads arranged to conneot by ono (111) inoh vertioal pipe nirples through servioe shutoff cocks to fittings at the low points in th,e gas piping, system. All gas piping shall be sloped to drips or drain lines, D. Pilot Lino Flame 0011: There shall be furnished and installed a pilot line flame cell at the location shown on the plans, The flame cell shall be equal to that manufaotured by Paoifio Flush Tank Company. • FEND OF ITEM f 509-1 ITEM N0. ZO - SLUDGE DENSITY MM;ASURIii SYSTEM A, General; There shall be furnished and installed a complete sludge den- sity a-ialyzer measuring system consisting of a measuring head, a preamp.. lifier, an analyzer instrument, and a sludge density recorder. The equip- ment shall be equal to the AocuRay Density Analyzer as manufactured by Industrial Nucleonics Corp., Columbus, Ohio. The measuring system shall operate on the principle of radiation absorption, utilizing a radio- active source and ionization chamber detector, the signal from which is fed to an impedanoo matching and amplifying system that aotuates a readout device, D. Measuring He !s The measuring head shall be capable of being in- stalled as an integral part of the sludge piping as shown on the Plans. The eouree.deteotor geometry shall be rigidly fixed by welding the units to a pipe seotion, Adequate shielding shall be provided so as to reduce the radiation to less than q mr per hour at the closest point of personnel aooess. Shielding shall be of lead and Meehanite, The source enclosure shall be bolted to the shield unit in such manner that the bolts are se- cured with a bolt-look requiring a key to open. The source material shall be protected from the sludge pipe in such manner that pipe rupture for any cause will not permit the source to enter the sludge stream nor be lost from its holder, The ionization chamber detector shall be operated at a polarization voltage not less than 350 volts= shall have an output current of 10-9 amperes or more; and shall have an inherent time constant of less than 1 second. The detector shall operate in the saturated region of its voltage current characteristic curve, and it shall be surrounded by a heating element to maintain it at a constant temperature greater than i 140° M' to prevent moisture condensation. The h;, ting element shall operate on 120 volt, 60 oyclo, single phase current. Factory scaled oondulets shall be supplied for all leads entering the source-detootor unit. The pass tube shall be a straight pipe section of same internal diameter as line in which it is to be installed, with no bends or orooks and no internal obstructions. Construction shall permit prooalibration of unit before installation in the field, C. AmLli ierr The amplifier shall be gunrantoed by the manufacturer to be oomplotoly compatible with the scuroo-detector unit. It shall be of the di.reot current type and the zero stability shall, be ouoh that the 24 hour zero shift is losa than 2 millivolto. The amplifier shall be completely snuased in a Crouse-}finds or equal onclosure with sealing typo conduit fittings. The amplifier shall have 100; feedback eirouiting designed for complete gain stability. The oleotroni.o chassis shall be ritainless steel, The unit and shallsrequirehall D. Analvzer Ins rrq=3 The instrument shall be encased in a splash- proof, dust-proof purgable housing, The output of the instrument shall be M • 510«1 • -5 mv., 0, +5 mv, oorrespondirg to full scale meter reading. Provision shall be made on the control panel for checking changes in path legth due to corrosion or coating of the gauge pipe walls, A dial shall be provided which reads directly in percent radiation transmitted. Two point standard- ization shall be incorporated to establish a permanent calibration curve. An adjustment shall he available on the front panel for easy span adjust- ment which can be preoalibrated without use of absorber plates. A time delay function, shall be incorporated for protection of tubes when putting in to operation from a cold start. All critical power supplies shall be regulated. r, yen RecofdeX: The sludge density recorder shall be oonstructed of oorrosion-resistant materials and enclosed in a dust-proof case for su- face mounting. The recording charts shall be 10" nominal diameter and shall revolve once daily. Charts shall be driven by 11OV, 60 cycle else trio synchronous motors. The charts for the recorder shall be graduated to read from 0% to 8%. The recording instrument shall contain a 115 volt, single..pole relay for control of one of the sludge pumps. F. Alt_ ernak,. sent: Proposals on other types of sludge density meajuring systems will be submitted for review whether or not they are in exact conformance with the specifications outlined above. • D14D Or ITEM • i 510=z 0 .IT 1_ N0, it - METEERR.fNG_?JIL A1ENT . A, 1'. Tubes; Furnish one (1) 16" flow tube and motor S'or metering raw soware (from Raw (.;swage Pump Station) and one (1) 10" flow nitre aruod i meter for metering; return Mudge from ibturr, Sludge Pump Station. The flow m tubes shall operate on the di.ffere:ttial prossuro Prinripl.e and shall Lo of the insert throat with internal averaging annulus throat type, equal to the Lo-Loss blow 'l'ube, as manufactured by Penn 1loter Company, Philadel- phia, Pennsylvania, The flow tu')es shall be constructed with body of Meehanite or close-waits, high tensile cast iron, ASTH designation A-126-42, and with a tube liner of bronze. The tubes sihall be equipped With standard 1251 A.S.A, flanges, The inlet shoulder shall be constructed with sharp upstream edge, free from burrs. The throat section shall be precision machined to proper diameter and contour, All internal cross sections of the tube perpendicular to its axis shall be oiroular, and there shall be no projections inward from the cylindrical surface, rntegral inlet and throat pressure taps shall be included within the body. All vent.9 shall be drilled and reamed at right angles to the axis of the tube with sharp inside edge free from burrs, and each vent shall be bronze bushsd, No drilling and tapping of the pipe line shall be required. Provide a bitumastio coating inside and out. Provido all necessary accessories for continuous flushing from the sewage effluent water supply, Flushing water shall be metered through a purge meter type sight-flo :indicator, Maximum differential pressure for the flow tubs shall be 120-inches of water and head lose through the tubes shall not exceed 6-i.nohes. 1, > aTrapgm~ttgrgj Furnish for each flow tube one (1) flow transmitter equal to the Hodel 101314?0 with 10;1 flow range as manufao- tured by Fischer and Porter. The transmitters shall be of the time- impulse types requiring not more than two wirer for transmisr,torr of time impuleo signals between Trantmi.tter and Receiver. signal. shall be dirootly proportional to the rate offlowmandflthesaom;rleta ir cycle shall requiro not .lr , Accuracy shall be unaffected by ~normalovar ationaminc: inorsvolTtngc, nresi.ot- anoe or inductance, Ad justruent shall not be upset by power failure; upon restoration of power srsrvico the meter shall resumo accurate measurement. Each transmitter shall have a cam driven by a synchronous motor and shall W housed in a duet-proof case. The cam and cam follower shall be continuously lubricated by an oil bath. All working parts shall be corrosion-resistant materials. No part of the electric oirouit shall, come in contact with the fluid being measured. 2, &ggJy=s The receiver mechanisms shall be constructed of corrosion-resistant materiale and enolosed in a dust-proof cane for panel mounting, The receivers shall be similar and equal to the Model. 11000'25 r 511.-1 s totalizing, indicating, and recording receivers of the time-impulse typo, as manufactured by Fischer and Porbor. Tho raw sewrigo flow receiver shall. be oquipped to re-transmit a proportional signal to automatically control a solution food type gas chlorinator. The recording charts shall be 12" nominal diameter and shall revolve once daily. Charts shall be driven by 114 V, 60 cycle electric synchronous, motors. The charts for the raw sewage flow receiver shall be graduated to read from 0 to 7.5 VTD and the charts for the return sludge flow re- ceiver shall be graduated t.o read from 0 to 1100 GP14. D. ~a$ ti-c I'lo : Furnish one (1) 3" magnetic flow meter far Primary Sludge. Metering transmitter shall be monofilament type fiber- glass tube with 125 lb, standard flanged ends, The transmitter shall be equal to Fisoher & Porter Model i;1OD1416A. Electrodes shall be made of Type 316 stainless steel, and shall be equipped with brush type oleanouts or an approved equal electrode cleaning process. The receiving instrument shall, be a recording indicating, totalizing receiver equal to the Fischer and Porter Model No. 1102BI120, to receive electrical signals from the magnetic flow meter transmitter and shall be furnished by the flow meter transmitter manufacturer, The receiver shall have a chart range of 0-75 uniform and the system shall be calibrated for a range of 0-75 OPM. 11ie receiver shall have an 8-digit totalizer oali- brated in gallons, shall have a mounting yoke and be attached to a 2" pipe stand, located as indicated on the Plane in the Primary Sludge Pump Station. • Overall accuracy of the magnetic flow-meter system shall be within 1% of full scale span and shall be unaffected by either upstream or downstream piping configurations. C' U02212r T 11% .to Furnish two (2) 6" propeller motors for return sludge, ono (1 G" propeller meter for return sludge, and ono (1) 1211 propeller nester for was},o sluilgo. The propellor typo flow motors shall be equal, to C.T. flanged tuba meters and U.T. boll and spigot motors as manufactured by Sparl.ing Gfetor Company, teeters shall, have conical. shaped propollcrs and nhall bo suitable for operation in ^ludge lines. The two 6" return sludgo motors shall have 125 l.b. standard flanged ends and the other two motors shall have standard G.I. bell and spigot ends. All motors shall bo suitable for a maximum working pressure of 50 psi. '.;ach meter shall be equippocl with extension tube to raiso the motor head up near top of vault it, is onelosod in. Heter heads shall have indicators and 6-digit totalizers calibrated in OPM. D+ 9rifice Plate and A,~r jLtDX; Furnish an air metering system consisting of a Foxboro or approved equal, Model 45 Indicating Flow Transmitter and Model 14A pneumatic rooeiver-integrator, and one 6" air receiver indicator. * The transmitter shall have a differential range of 011-10" water. The shall give otalizingarecmaximum ei er,oandtdhall be for flush mounting r 511-2 in the control panel. The air receiver indicators shall have 0 to 5 square root dials. The indicator shall be for flush mounting in the control panel. The transmitter shall have a mounting yoke and shall be mounted on a 2" pipe stand in location shown on Plans in Blower Building. Furnish steel orifice plate bored for a maximum floor range of 5000 CFM of air at 10" water differential„ Boro of the orifice shall be computed on the basis of 5000 CM flow, 10" wat-;r differential (max.), 125 degrees F. temperature, and 21.9 PSIA static pressure. Furnish 24" cast iron orifice flanges complete with nuts and bolts, 2 orifice flange shut-off valves (1/21' NPT), and a 24" atraighteni,ng vane. END OF ITE14 • A • r 5].1-3