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6507 - Supply of Concrete Street Light Poles, 3.Statement of Work/ SpecificationsRFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 1 of 13 TECHNICAL SPECIFICATIONS A. PURPOSE The City of Denton is providing information that will allow prospective suppliers to prepare submissions to supply Concrete Streetlight Poles. The products will be received and distributed from the Denton Municipal Electric Pole Yard, located at 1701C Spencer Rd, Denton, TX 76205. Orders will be placed as needed over the contract term. B. SUBMISSIONS Submissions shall be provided using the Exhibit 1, with supporting documentation as required. Additional information clarifying the supplier’s product may be attached to their submission. Pricing shall include all costs to deliver goods as specified in this specification. Any special fees or commissions, and all freight for delivery to the City of Denton Warehouse and unloading costs must be included in the quoted price. Item pricing shall be mutually exclusive, thus the City of Denton reserves the right to choose the best valued item from different vendors. C. QUALITY CONTROL The manufacturer shall be responsible for the quality control of the manufacturing processes to assure that all requirements of these specifications are met. However, the City reserves the right to observe, to inspect and to require additional quality control investigations, either by its personnel or an independently employed quality control investigator, at any or all stages of fabrication at the manufacturer’s facilities. Failure to adequately maintain fabrication and quality of fabrication until completion shall be grounds for cancellation of the order or any part thereof. Field failure or field repairs required due to quality control failures or manufacturing procedures shall be the responsibility of the manufacturer. D. WRITTEN WARRANTY and GUARANTEES Written guarantees shall include any limitations as to the nature of failure or time limitations. The guarantee shall begin upon receipt of the accepted units, not on the date of manufacture. Guarantees shall indicate whether or not it is made on a full replacement basis or a prorated basis and if prorated then what are the terms. Manufacturer/supplier guarantees that the goods furnished under this specification are of high quality and agrees to replace any goods found to be defective during inspection, installation, or service for a minimum period of 12 months after unit is delivered to Denton. All replacements by the manufacturer/supplier shall be free of charge F.O.B. at the same delivery point called for in the original order. Replacements must be handled in a professional and timely manner and in no case shall a replacement unit take longer than 60 days to arrive in Denton after first being submitted for replacement. Respondent guarantees that all products quoted and furnished under this agreement will be accepted at any normally used United States approved repair and warranty shop should one be available for the manufacturer’s product quoted. The City of Denton will not accept a manufacturer’s product that was rejected or substandard and then sold to a broker for either resale or scrap that would not be fully warranted by the original manufacturer. RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 2 of 13 The respondent must be an approved distributor by the manufacturer of these products, and is authorized to sell the products to the City of Denton. The respondent also guarantees that the City will be represented by the Manufacturer, should an issue arise, and that all manufacturer’s warranties will be in effect for the life of the contract. E. SPECIAL DELIVERY REQUIREMENTS Delivery of good shall be made within two (2) weeks of receipt of order. Deliveries shall be made between 8:00 AM -3:00 PM Monday through Friday, excluding holidays. This location does have a forklift and dock available for offloading. F. ACCEPTABLE MANUFACTURERS DME will only accept submissions from specific manufacturers listed in the approved manufacturers list below. 1. Lonestar Prestress Mtg., Inc. 2. CPI Concrete Products For aesthetic and operational reasons, all of the concrete poles of both street pole types shall be the same design as previously utilized on Denton Municipal Electric’s electric distribution system. The City has implemented a pre-approval process for substitution commodities and services. The commodity approval form can be obtained via email (laura.hermosillo@cityofdenton.com). Supporting documentation or samples must be submitted for review by Purchasing, Engineering, field crews, QAG (Quality Assurance Group), and the manager of DME. Testing may be required and may take substantial time to review. Vendors are encouraged to submit forms and samples for consideration on the next solicitation for similar items. TYPES OF CONCRETE STREET LIGHT POLES There are two types of poles included in this RFP: 1. 35-foot long, square faced pre-stressed white concrete street light poles with each one having a single eight foot long tapered aluminum single arm bracket with attachment hardware. The resulting contract from this solicitation will supply all the 35-foot long white concrete pole street light poles and single eight-foot aluminum arm brackets required by Denton Municipal Electric throughout the year on an as needed basis. The 35-foot long white concrete street light poles shall be designed for mounting a cutoff cobra-head luminarie approximately 29-feet above grade with an 8-foot long tapered aluminum arm bracket. The concrete street pole shall be suitable for a direct soil RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 3 of 13 embedment of 6-feet. The concrete poles are intended for residential streetlight and city park application use and replacement. 2. 20-foot long, pre-stressed exposed aggregate concrete streetlight poles in the Waterford Series style. The poles shall be suitable for direct embedment into the ground without a special foundation. An exposed river rock aggregate with brown dye (San Jacinto Brown) added to the concrete shall be the finish for these poles. The resulting contract from this solicitation will supply all the 20-foot long exposed aggregrate concrete street light poles required by Denton Municipal Electric throughout the year on an as needed basis. The dimensions of the required streetlight poles are presented in the attached drawings. Individual purchase orders will define the number of new commercially 35-foot long white concrete street light poles with tapered aluminum single arm brackets and the 20-foot pre- stressed, Exposed Aggregate Concrete Streetlight Poles–Waterford Series that are to be furnished periodically throughout the agreement term as the need arises. A purchase agreement will last for a period of three years from the date of award by the City Council of the City of Denton. The manufacturer shall provide warranties or guarantees of the proposed equipment and material. The bidder shall furnish the City of Denton with such warranties or guarantees upon request by the City of Denton. TECHNICAL SPECIFICATIONS FOR 35-FOOT CONCRETE POLES AND ALUMINUM ARM: The 35 foot long white concrete street poles shall meet or exceed the latest applicable American Concrete Institute “Building Code Requirements for Structural Concrete” (ACI 318 -Latest Edition), unless otherwise specified. Poles shall be designed in accordance with the Prestressed Concrete Institute “Guide for Design of Prestressed Concrete Poles”, and Prestressed Concrete Institute MNL-116, “Manual for Quality Control for Plants and Production of Precast Prestressed Concrete Products”. The following ASTM Standards shall apply: ASTM C105 Portland Cement; ASTM C494 Admixtures; ASTM C33 or C330 Aggregates; ASTM A615 Reinforced Bars; ASTM A82 Cold Drawn Spiral Wire; ASTM A416 Prestressing Strand, 270K; ASA Aluminum Association #6063-T6; along with all other appropriate National Electric Manufacturers Association Standards or industry standards. The manufacturer is responsible for poof of compliance with the latest version of the ASTM standards. The prestressed concrete poles shall have the following construction features: EMBEDMENT: All poles shall be prestressed concrete and suitable for direct embedment into the ground without special foundations. Poles will typically be buried at a six -foot depth for the 35 foot long pole but that could vary slightly due to soil conditions that are encountered. RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 4 of 13 SHAPE AND LENGTH: Poles shall be squared in cross-section, with chamfered corners, and shall have a taper of 0.162 inch per foot. Cross-sectional dimensions shall not deviate by more than 3/8 inches. The pole length shall have a nominal overall shaft of 35 feet. The allowable tolerance for overall length shall be 3 inches and –2 inches. FINISH: The surface of the pole shall be smooth, uniform and consistent for the entire length of the pole. No cracks will be allowed. Squared corners and sharp edges shall be tooled to form smooth, chamfered corners and edges. The top surface of the pole shall be troweled until all projections, depressions, and irregularities have been removed and the entire surface has a smooth texture and neat lines. The pole color shall be Portland White. All small cavities shall be cleaned, saturated with water and then filled with mortar. A small cavity is defined as one larger than ¼ inch but smaller than ¾ inch in diameter, and opening the side of the damaged area on a 1 to 1 slope using a mechanical grinder, cleaned thoroughly and filled with a high-strength non-shrink concrete repair material. Poles with other defects may be repaired only upon authorization or they will be rejected and must be promptly replaced at the manufacturer’s full expense including freight for both the new and rejected pole. SEALING STEEL STRANDS: The end of each reinforcing strand (in the tip and base) shall be burned back to a minimum depth of ½ inch. The holes left by the removal of the strand shall be thoroughly cleaned of any loose residue. The holes shall then be completely filled with no- shrink grout and smoothed evenly with tip or butt surface. COVER: The prestressing strands shall have a minimum concrete cover of 1 inch. The centerline axis along the faces of the poles shall be clear of embedded steel except for stirrups, spiral reinforcement and fabrication devices, so that ¾ inch diameter holes may be drilled without interference from the strands. SWEEP: A straight line joining the edge of the pole at the butt and the edge of the pole at the top shall not vary in distance from the surface of the pole at any point by more than 3/8 inch for each 10 feet of the pole length from the taper design. HOLE DRILLING: Poles shall be drilled in accordance with the approved drawings. The location of holes shall not deviate by more than 3/8 inch. Holes drilled after removal from molds shall be drilled from both sides of the pole and shall be uniform at the entrance and exit locations. Holes drilled from opposite sides must be in the same plane and be centered on both faces. ALUMINUM BRACKET: Each pole shall come with a side mounted 8-foot long tapered aluminum single arm bracket that can be bolted to the pole using 5/8” x 6” galvanized machine bolts with flat washers, lock washers and nuts (all hardware shall be provided by the manufacturer). The luminaire support shall be a two inch, ASA schedule #40 per Aluminum Association #6063-T3, IPS aluminum pipe similar to the pictures attached in the Appendix. The arm shall provide a nominal overall luminaire mounting distance from the pole base of not less than 36 feet, which will provide a nominal 30-foot height above grade. RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 5 of 13 HANDHOLD: Each pole shall come with a 3 inch by 8 inch by 6-inch deep, recessed handhold box with aluminum cover. Two, 1-1/2 inch diameter raceways shall enter the box from below originating on opposites of the pole and one ¾ inch raceway will leave the box from the top. The top raceway will connect the box to the aluminum arm at the pole top. The two bottom raceways will enter the pole 4.5 feet from the pole butt and on opposite sides of the pole from each other. The hand hole shall be centered 8 feet from the pole butt as shown in the Appendix. Handhold shall be large enough to adequately house all wiring, possible fusing and grounding connections. NAME PLATE: The vendor shall provide a non-corroding identification plate on each pole. The plate shall be located 12 feet from the butt and on the same side of the pole as the light bracket. The identification plate shall have the manufacturer’s name, the pole catalog number, and a five-digit pole identification number. Denton Municipal Electric (DME) will provide the vendor with the pole identification numbers after the bid has been awarded. STRENGHT REQUIREMENTS: The concrete used in the pole shall have a compressive strength at time of shipment of not less than 4,000psi, and a 28-day compressive strength of not less than 7,000psi. The concrete chloride content, including all ingredients, shall be 0.4 pounds per cubic yard or less. All poles shall be capable of withstanding a single point pickup while laying in a horizontal position when being lifted at a point 30% of the overall length down from the tip of the pole. GROUNDING: A standard ground wire in the hand hole shall be securely bonded to a continuous steel bar running the length of the pole. The ground wire in the hand hole shall be a #6 stranded copper ground wire. The length of the #6 stranded ground wire shall be of sufficient length so that it will be able to be extended out of the hand hole by at least 6 inches so connections can be made. Material shall comply with the most recent revision of the following ASTM Standards: CEMENT: Portland cement shall conform to the current specifications for “Portland Cement” (ASTM Designation C 150). Cement shall be stored in a dry, well-ventilated location protected from weather. Color shall be Portland White. AGGREGATES: Crushed rock aggregates shall meet current requirements of “Specification for Concrete Aggregates” (ASTM Designation C33). WATER: Water used in mixing concrete shall be clean and free from a deleterious amount of silt, oil, acids, alkalies or organic materials. STEEL: High-tensile prestressing wire shall conform to the current specifications for “Uncoated Seven–Wire Stress-Relieved Strand for Prestressed Concrete “(ASTM Designation A416), Grade 250 or ASTM A421. The strands shall be protected from physical damage or deterioration. RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 6 of 13 BAR: Bars for reinforcement shall conform to “Deformed Billet Steel Bars for Concrete Reinforcement” (ASTM Designation A615). WIRE: Wires for reinforcement shall conform to “Cold-Drawn Steel Wire for Concrete Reinforcement” (ASTM Designation A615). PLATE STEEL: Plate steel shall conform to “Structural Steel” (ATSM Designation A36). CURE: The primary cure time shall be of such length that sufficient compression strength of concrete is attained to prevent slippage of the prestressing cables. The cure method shall prevent loss of moisture in the standard. Upon removal of the standard from the mold, it shall be protected from the sun and wind for a period 48 hours for proper curing. The standards shall receive an additional air cure time of 15 days before shipment and installation. PRESTRESSING: After concrete has attained the required compression strength, the high– tensile prestresssing strand shall be released so that its tension is a maximum of 70% of its ultimate strength at time of stress transfer. SURFACE TREATMENT: The surface may be exposed from the mold after sufficient concrete curing and the resulting surface shall be uniform in lines and surface texture. Seam marks from concrete mold shall be removed and pole inspected for any voids or imperfections. BONDING: Reinforcing steel, strand, wire, and studs bolts, anchor lugs or plates shall all be electrically bonded. Arms shall be bonded through the use of this electrical bond and be accessible to the handhold ground wire. TESTING: Test shall be made and records shall be maintained in accordance with the requirements of Prestressed Concrete Institute MNL-116, “Manual for Quality Control for Plants and Production of Precast Concrete Products”. HARDWARE: All hand hole fasteners must be stainless steel ¼” – 20 x ¾” Allen (Hex) pan head bolt-3/4” long, hot dip galvanized as per ASTM A153 or zinc alloy as per AC41A. All structural steel shall be hot dip galvanized in accordance with ASTM A123 and shall conform to ASTM A36. TECHNICAL SPECIFICATIONS FOR 20-FOOT PRE-STRESSED EXPOSED AGGREGATE CONCRETE STREETLIGHT POLES: The 20-foot Pre-stressed Concrete Streetlight Poles – Waterford Series shall meet or exceed the latest applicable ASTM standards. The 20-foot Pre-stressed Concrete Streetlight Poles – Waterford Series shall conform to the latest revisions of ASTM C105, ASTM C494; ASTM C33 or C330, ASTM A615; ASTM A82; ASTM A416 standards. RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 7 of 13 American Concrete Institute Standard “Building Code Requirements for Reinforce for Reinforce Concrete” (ACI 318 – Latest Edition). The Prestressed Concrete Institute “Guide for Design of Prestressed Concrete Poles”. The manufacturer is responsible for poof of compliance with the latest version of the ASTM standards. DESIGN: A registered engineer experienced in concrete pole design shall perform all pole design and structural calculations. The poles shall be designed with an overall length and strengths as specified in the bid proposal. All poles shall be pre-stressed concrete and suitable for direct embedment into the ground without special foundations. MATERIAL: a). Concrete used in poles shall have a compressive strength at transfer of not less than 4,000 PSI, and a 28-day compressive strength of not less than 7,000 PSI, unless otherwise specified. b). Low Alkali Cement; Cement for concrete shall be Low Alkali Type I/II. c). Chloride Content of the concrete mix, including all ingredients, shall be 0.4 pounds per cubic yard, or less. d). Corrosion Resistance: All inserts or attachments, if required, shall be of non-corrosive material or galvanized. STRENGTH REQUIRMENTS: Pole shall be design for wind pressures determined in accordance with ASCE 7-02 for a 3-second gust wind speed of 140 mph. The rated strength is that load which, if applied, in a direction perpendicular to the pole axis two feet below the pole tip and with the bottom of the pole (ten percent of its length plus two feet from the butt) held firm, will produce the first sign of a hairline crack. The ultimate strength is the load at which point failure occurs. All poles shall be capable of withstanding single point pickup from the horizontal position when lifting from a point 30% of the overall length down from the tip. FINISH: The finish will be exposed river rock aggregate with brown dye added to the concrete (not painted or sprayed on), similar to the Lonestar Prestress Mfg., Inc.’s San Jacinto Brown finish. After poles are removed from the molds, all surfaces are to be water blasted to expose the aggregate. All small cavities shall be cleaned, saturated with water and then filled with mortar. A small cavity is defined as one larger than 1/4 inch but smaller than 3/4 inch in diameter, and less than 3/8 inch deep. Larger non-structural cavities and spalls shall be repaired by opening the side of the damage area on a 1 to 1 slope using a mechanical grinder, cleaning thoroughly and filling with a high-strength non–shrink concrete repair material. SHAPE AND LENGTH: Poles shall be squared in cross-section, with chamfered corners, and shall have a standard taper of 0.162 inches per foot. Cross-sectional dimensions shall not deviate by more than 3/8 inch. The allowable tolerance for overall length shall be +3 inches and –2 inches. The width of the bottom face of the pole (as it is cast) may be less than the top face. RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 8 of 13 SEALING STEEL STRANDS: The end of each steel-reinforcing strand (in the top and butt) shall be burned back to a minimum depth of ½ inch. The holes left by the removal of the strand shall be thoroughly cleaned of any residue. The holes shall then be completely filled with non- shrink grout and smoothed evenly with tip or butt surface. COVER: The pre-stressing strands shall have a minimum concrete cover of 1 inch. CENTERLINE AXIS: The centerline axis along the faces of the pole shall be clear of embedded steel except for stirrups, spiral reinforcement and fabrication devices, so that ¾ inch diameter holes may be drilled without interference from the strands. SWEEP: Sweep is the deviation of a pole from straightness. A straight line joining the edge of the pole at the butt and the edge of the pole at the top shall not be distant from the surface of the pole at any point by more than 3/8 inch for each ten feet of length. HOLE TOLERANCES: Poles shall be drilled in accordance with approved drawings. The location of the holes shall not deviate by more than 3/8 inch. The distance between equipment mounting holes shall not deviate by more than ¼ inch. Holes drilled after removal from molds shall be drilled from both sides of the poles and shall be uniform in entrance and exit. Holes drilled from opposing sides of the pole must be in the same plane and be centered on both faces. Field drilling shall be permitted on the centerline of either axis. PVC INTERNAL RACEWAY: A PVC conduit for installation of a secondary voltage wire will be cast with the 20ft Pre-stressed Exposed Aggregate Concrete Streetlight Poles – Waterford Series. The conductor entrance will be 24” from the butt of the pole. The PVC conduit shall be a minimum of 1”inch from the entrance to the hand hole box. From the hand hole box to the tenon pipe, the PVC conduit shall a minimum of ½”. The PVC conduit shall be off-centered to allow centerline drilling if necessary. The entrance outlets are to be at 45-degree angles. The conductor entrance and hand hole box are to be on the same side of the pole. HANDHOLE BOX: Each pole shall come with a 3 inch by 8 inch by 6 inch deep, recessed handhold box with a 4 inch by 12 inch aluminum cover. One, 1-inch diameter raceway shall enter the box from below the pole and one 1/2 inch raceway will leave the box from the top. The top raceway will connect the box to the tenon pipe at the pole top. The bottom raceways will enter the pole 2 feet from the pole butt. The handhole shall be centered 6 feet from the pole butt as shown in the Appendix. Handhole shall be large enough to adequately house all wiring, possible fusing and grounding connections. The hand hole box and the conductor entrance are to be on the same side of the pole. CORNERS: All corners shall be ¾” chamfered. BIRTHMARK: All poles shall be permanent marked legibly and permanently on the pole face with a metal tag affixed thereto. The metal tag for the face of the pole shall be round, noncorrosive, and tight-fitting and recessed 1/4 inch. Mounting height shall be above the ground RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 9 of 13 line will be specified on the approved drawing. The metal tag shall have the following information: 1. The supplier's code or trademark. 2. Class numeral and numerals showing the length of the pole. 3. Date 4. Weight RECESSED: On the face of the pole there shall be a recessed area 5 ½” inches by 1 ¾” inches for a DME specified pole tag to be mounted. TENON PIPE: The hot dipped galvanized tenon pipe shall be, 3”x2-3/4” after weld attachment and 2-3/8”O.D. x 2-1/2” located on the tip of the pole. Per attached drawing. INSERTS: The inserts shall be 3/8” bolt 1 ½” insert per attached drawing. The inserts shall mount stop sign and street name signs. Per attached drawing. APPROVED MANUFACTURERS: Lonestar Prestress Mtg., Inc. CPI Concrete Products For aesthetic and operational reasons, all of the concrete poles of both street pole types shall be the same design as previously utilized on Denton Municipal Electric’s electric distribution system and will only be accepted from the manufacturers listed above. RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 10 of 13 New 8 foot long tapered aluminum streetlight arm bracket RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 11 of 13 Typical 20 ft long (San Jacinto Brown finish) concrete streetlight pole RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 12 of 13 (Exposed aggregate finish) RFP #6507 EXHIBIT 3 SCOPE OF WORK SUPPLY OF CONCRETE STREET LIGHT POLES RFP 6507 – Exhibit 3 Page 13 of 13 Close-up view of exposed aggregate surface on 20 foot pole and tag provisions