7029 - Construction of Traffic Signals, 4.Drawings/ PlansTABLE OF CONTENTS
General Notes
1.1 Definitons
1.2 Instructions
1.3 City’s responsibility
1.4 Furnishings
1.5 Excavation/Trenching/Boring
1.6 Remediation
1.7 Site Obstruction(s)
1.8 Traffic Control
1.9 Item(s) to be Removed/Modified
Traffic Signal Specifications
Part 1 - General
1.1 Summary
1.2 Price and Payment Procedures
1.3 References
1.4 Administrative Requirements
1.5 Submittals
1.6 Action Submittals/Informational Submittals
1.7 Delivery, Storage, and Handling
1.8 Warranty
1.9 Quality Assurance
Part 2 - Products
2.1 Products to be Furnished from the City
2.2 Assemblies, Equipment, Product Types, and Materials
2.3 Source Quality Control
Part 3 - Execution
3.1 Examination
3.2 Preparation
3.3 Installation
3.4 Repair
3.5 Field Quality Control
3.6 System Startup
3.7 Closeout Activities
3.8 Protection
3.9 Maintenance
3.10 Cleaning
GENERAL NOTES
DEFINITONS
Engineer: The term as used herein shall be the Engineer of record as noted on the applicable referenced design plan(s) and can, in lieu of or in addition to, include his/her duly appointed
representative, as noticed by said Engineer and as may apply thereof.
Contractor: The term as used here in and for the purposes of these notes shall include the: Primary contractor and/or sub-contractor(s) and/or representative(s) thereof and/or agent(s)
thereof and/or person(s) acting on the behalf thereof and/or who takes responsibility, in part or in whole, for any or all of the work required for and as it pertains to the completion
of the system as referenced.
System: The term as used herein may include, but is not limited to any and all ancillary item(s), associated appurtenance(s), software(s), firmware(s) and hardware(s), as well as their
related component(s) and/or part(s) and/or any portion thereof, in part or in whole, as referenced, and as may apply to:
All applicable traffic control signal related item(s), which may include, but is not limited to:
All concrete and, if required, reinforcing steel for the signal controller cabinet’s foundation and service pad, signal pole foundations, electrical meter pedestal’s foundation and service
pad and ground box(es);
The controller assembly (including but not limited to the signal controller, controller cabinet (complete), applicable detectors, conflict monitor and card rack;
Signal pole assemblies;
Vehicle and pedestrian signal indications;
Video detection system (VIVDS);
Presence and advance radar detection systems;
Radio control equipment;
Emergency preemption equipment;
CCTV equipment,
Pedestrian push buttons;
Electrical meter pedestal and, if required, pole(s);
Conduit
Ground boxes;
Signal cable/wire;
LED lamps in all signal faces;
Illuminated signing (ILSN);
Fiber communication;
Any and all other attached and/or utilized devices.
For developed related installation, the furnishing and installation of the system shall also consist of the contractor installing all programming items (which may include, but is not
limited to: timing, phasing and pre-emption for the signal controller, radar, VIVDS and any other component needing programming and as may apply) by the City for the proper and complete
functioning of the system.
For Texas Department of Transportation (TxDOT) related phased construction, the contractor shall provide timely updates of all related traffic control signal timing and/or phasing within
the limits of construction as phasing and/or traffic circulation changes.
And may also consist of any and all accessories including, but is not limited to:
Pavement markings;
Sign(s), other than illuminated;
Sign post(s);
Sidewalk;
ADA Ramps;
Traffic control;
Drainage related item(s);
Curb and gutter;
Pavement related item(s);
Utilities;
Landscaping;
Other items as may be required.
Work: The term as used herein shall consist of, but not be limited to, any and all procedure(s), method(s), process(s), technique(s) and/or the like required of an as they relate to:
The construction/reconstruction; installation/reinstallation; assembly/disassembly/reassembly; modification; repair; replacement; removal; programming/reprogramming/deprogramming; adjusting/readjust
ing; remediation and/or the like, in part or in whole by the contractor, in accordance with and/or as applies to accepted practices of the industry and/or as dictated by the manufacturer
of an item(s), such that the system, as referenced, is complete and done within a reasonable amount of time and as is necessary for the proper operation of the system, in its entirety,
and to the satisfaction of the Engineer and the City.
Unless specifically noted otherwise, the use of the term “City” shall mean the City’s Traffic Operations Manager and/or the Field Service Supervisor, phone number: 940-349-8462 and/or
their designated representative(s) or replacement(s).
INSTRUCTIONS
The non-compliance and/or disregard of the contractor in providing the work or any system component(s) necessary for the completion of the system, as referenced, can mean the rejection
by the City, or any and/or all item(s) (in part and/or in whole) and the withholding or non-payment of any associated monies thereof. In addition, the cost(s) associated with the completion
of any work and/or the supplying of any components(s) (required of this project as referenced, but not done by the contractor) by any other entity will be charged to the contractor,
including administrative fees. Any said charges not paid in full to the City by the Contractor may restrict said contractor from any further work within the City until said charges
are paid in full to the City.
All general practices, policy(ies) procedure(s), schematics(s), specification(s), standard(s) and the like established by the City and/or those used by the City from other sources are
constantly being updated. The Engineer and/or contractor shall obtain the most current document(s) and/or confirm that the document(s) that they are in possession of contain the most
current requirement(s) and/or, when not available in writing, receive verbal instruction(s) before proceeding with the design and/or ordering items and/or performing the work required
for any item(s) for a City system.
The contractor will only be allowed to work on the project during a standard City working weekday, during daylight hours (Typically: Monday – Friday, 7 AM – 3:30 PM) or as approved by
the City in advance of any work being performed. It should be noted that the City has a noise ordinance which will be complied with in considering day(s)/time(s) of work outside those
noted herein.
The location of traffic control signal’s:
Mast arm vertical pole foundations;
Controller cabinet foundation;
Conduits;
In pavement detectors, if required;
Ground boxes;
Electrical meter pedestal;
Electrical service pol(s):
And the like that are in contact with, are within or are under the ground, are approximate and shown as diagrammatic only on the engineering design plan(s) and may be adjusted by the
Engineer to accommodate field conditions. The contractor shall give the Engineer 48 hours notice of his/her intention to establish the final location of any said noted item(s) so as
to afford the Engineer the ability to approve the location(s) prior to work commencing.
Although the engineering design plan(s) approximately conform to the indicated scale, the positional relation of some system components and equipment may have been distorted for purposes
of clarity.
Any obstructions to existing drainage due to the contractor’s operations will be removed by the contractor, as required by the City, and at the contractor’s expense.
Any damage, in part of in while, to any existing facility, utility, street furniture or the like, that is not a part of the required work, as referenced, shall be repaired or replaced,
as directed by and to the City’s satisfaction, by the contractor and at the contractor’s expense.
All existing public and private facilities (such as, but not limited to, sprinkler system, parking lot, retaining wall, landscaping bus facility, drainage facility, driveway, sidewalk,
utility and the like) in part or in whole, damaged by the contractor, shall be repaired/replaced within 48 hours of written notice to proceed by City.
No trees or shrubbery shall be cut or landscaping disturbed except upon the specific authority of the Engineer.
For each signal appurtenance, in part or in whole, that will be a part of or adjoining to a sidewalk or a proposed sidewalk, the ground around the appurtenance shall be graded in such
a manner that the top of the appurtenance is at the same elevation as the top of the sidewalks (or the proposed sidewalk) and such that all water runs away from the signal appurtenance.
The traffic control signal installation shall be wired to operate in accordance with the phase diagram(s) as per the approved design plan(s).
Time intervals for the various phases of the traffic control signal shall be adjusted and set by the contractor as directed by the City.
CITY’S RESPONSIBILITY
Except for those duties specially noted herein as being of the City, The City takes no responsibility in causing any work to be done and/or component of the system to function properly
so as to bring about the final acceptance of the system by the City.
FURNISHINGS
The contractor shall furnish all items (i.e. material and equipment) unless specifically referenced otherwise on the Drawings. In the event of City supplied items, Contractor’s bid price
to install only shall include the following:
Schedule pickup of items from the City
Pickup and transport items from the City to the jobsite
Precautions to ensure items are not damaged during transportation
Full responsibility for City items upon receiving said items
Unless otherwise referenced, all items required to be furnished by the contractor shall be new and complete (in its entirety and necessary for the proper functioning of the system).
Any and all additional or extra parts/components, manufacturer’s diagram(s), schematics, manuals, warranty material, instructional material, document(s), software cd discs (used for
the purposes of programming, testing and/or diagnostic(s)) for the related equipment, tools and the like that is supplied by the manufacturer with any item that is furnished by the
contractor for the system as referenced shall be relinquished to the City prior to acceptance of the system by the City.
EXCAVATION/TRENCHING/BORING
When installing a component of the system under a roadway, boring will be required, unless an alternate for each incident is approved by the City prior to any work being performed.
When installing a component of the system under surfaced parking, shoulders, hard-surfaced medians, driveways, sidewalks and/or the like, where possible, excavate the area or, when not
possible (as determined by the City), then a City approved alternate method.
When a trench is necessary that requires the removal of a hard surface for the installation of a component of the system:
When sawing through surfaced parking, shoulders, medians, driveways, sidewalks and/or the like, the contractor shall properly mark the limits of the area to be sawed, which shall be
approved by the City prior to commencing any labor associated with sawing;
Sawing shall provide a smooth, flat vertical surface with a minimum of spoils at the face of the material not being removed;
The material within the limits of the sawed area will be broken and removed in such a manner as to not damage the material not being removed, including any sawed face;
Any base material and/or hard surface to be replaced, that is not within the final limits of a component of the system, shall be done so with a similar material, approved by the City.
The material shall have, at a minimum, the equivalent density/ strength/ depth and be equal to or better in appearance and quality than the original material (irrespective of the current
condition).
Where concrete is to be replaced and there are joints in reasonable proximity of the area to be sawed, the work area shall extend to the nearest joint which, shall be sawed.
Where reinforcing-bar is removed, reinforcing-bar will be replaced so as to be equal to or greater than that removed and installed, including the doweling of the reinforcing-bar into
the existing/remaining material, in a manner acceptable to the City.
All material removed shall be properly disposed of by the contractor.
Labor for removing material will not be paid for directly, but will be considered subsidiary to installation of the material
Replacement of:
The base; and/or
Surface material; and/or
Any reinforcing-bar(s),
REMEDIATION
Any location (including, but not limited to: the limits of the construction/working area(s); storage area(s), vehicle maneuvering area(s) and other area(s) related to the construction,
as the City deems appropriate) disturbed as a result of the contractor’s work shall be restored to a condition of similar likeness to the immediate surrounding area and/or as directed
by the City and in a time agreed upon by the City.
SITE OBSTRUCTION(S)
The contractor shall be aware of all site related pedestrian and vehicle pathway(s)/ lane(s)/ travel way(s) or the like and shall restrict such movements to a minimum and only when necessary
during the work-day.
Each day before work is suspended, the contractor shall clear all item(s) from all pedestrian and vehicle pathway(s)/ lane(s)/ travel way(s) or the like, in such a manner so as to not
impede such movements until work resumes, except those restriction(s) for which there is a City approved traffic control plan for which a period of time is stipulated by the contractor
and approved by the City.
TRAFFIC CONTROL
The contractor shall submit a traffic control plan to the City for approval for each incident where the work restricts a pedestrian and/or vehicle pathway(s)/ lane(s)/ travel way(s)
or the like that impedes any such movement(s) in any manner.
ITEM(S) TO BE REMOVED/MODIFIED
Any existing item(s) that is referenced to be removed or modified, in part or in whole, and/or in excess as a result of any work that is performed shall be delivered to the City or,
when so directed by the City, disposed of properly.
Any structure associated with an existing system and referenced as being removed, in part or in whole:
Greater than 24 inches in depth below the immediate ground surface will be removed to a minimum depth of 24 inches below the surrounding ground level;
Equal to or less than 24 inches in depth below the immediate ground surface will be removed in its entirety.
TRAFFIC SIGNAL SPECIFICATIONS
GENERAL
SUMMARY
Section Includes:
LED Traffic Signal Head Assemblies
LED Countdown Pedestrian Signal Head Assemblies
Accessible Pedestrian Push Button Station Assembly
Radar Detection Equipment and Cable
Emergency Vehicle Preemption Equipment and Cable
Battery Back-up (BBU) System for Signal Cabinets
Tray Cable
Multi-conductor Cable
Power Lead-in Cable
Grounding Conductors
Ground Rod
Ground Boxes
Conduit
Traffic Signal Structures
Zinc Coated Steel Wire
Strain Pole
Timber Pole
Foundations
Electrical Meter Pedestal
ILSN Sign
Signal Controller
Controller Cabinet Assembly
Luminaire Head
CCTV
Wireless Radio System
Back Plates
Cast-in-Place Concrete
Cast-in-place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures and finishes, for the following:
Piers
Footings
Slabs-on-grade
Foundation walls
Retaining walls (non TxDOT)
Suspended slabs
Blocking
Cast-in-place manholes
Concrete vaults for meters and valves
Concrete encasement of utility lines
Substitution Procedures
The City of Denton preferred traffic signal products and manufactures are identified. No substitution products are allowed.
Deviations from this City of Denton Standard Specification
None.
Related Specification Sections include, but are not necessarily limited to:
Division 0 – Bidding Requirements, Contract Forms and Conditions of the Contract
Division 1 – General Requirements
NCTCOG Standard Specification for Public Works Construction, 4th Edition, Item 203
NCTCOG Standard Specification for Public Works Construction, 4th Edition, Item 504
PRICE AND PAYMENT PROCEDURES
Measurement and Payment
LED Traffic Signal Head Assemblies
Furnish and Install LED Traffic Signal Head Assemblies
Measurement
Measurement for this Item shall be per each LED traffic signal head assembly installed.
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per each “Signal Head Assembly” installed.
The price bid for shall include:
Furnishing and installing LED Traffic Signal Head Assembly and appurtenances including hinge pins, lens clips, locking devices, and gaskets
Housing and doors
Detachable visors
LED lamp unit
Louvers
Louvered back plate for signal heads with mounting hardware (self-tapping screws)
Mounting hardware
Aluminum, vented one-piece, black colored back plates and mounting hardware
Cable inside the pole will be paid for separately
Remove LED Traffic Signal Head Assemblies
Measurement
Measurement for this Item shall be per each LED traffic signal head assembly removed.
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “Signal Head Assembly” removed:
The Price shall include:
Removal of LED Traffic Signal Head Assembly
Removal of cable inside the pole will be paid for separately
LED Countdown Pedestrian Signal Head Assemblies
Furnish and Install LED Countdown Pedestrian Signal Head Assemblies
Measurement
Measurement for this Item shall be per each pedestrian signal section
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per each “Ped Signal Section” installed.
The price bid for “Ped Signal Section” shall include:
Furnishing, assembling, and installing the pedestrian signal sections
Housing units
LED countdown pedestrian units
Mounting attachments and completing wiring connections
Cable inside the pole will be paid for separately
Remove LED Countdown Pedestrian Signal Head Assemblies
Measurement
Measurement for this Item shall be per each pedestrian signal section or each pedestrian signal retrofit module removed.
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “Ped Signal Section” removed:
The Price shall include:
Removal of pedestrian signal section
Removal of cable inside the pole will be paid for separately
Accessible Pedestrian Push Button Station Assembly
Furnish and Install Accessible Pedestrian Push Button Station Assembly
Measurement
Measurement for this Item shall be per each accessible pedestrian push button station installed.
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per each “Accessible Pedestrian Push Button Station Assembly” unit of
the type specified.
Various mounting methods
The price bid shall include:
Furnishing, installing, and testing the Accessible Pedestrian Push Button Station
Mounting hardware
Sign adapter
Pushbutton stations
Central control units
Vibrotactile arrow with high visual contrast
Wiring harness
Voice message setup
Configuration devices or software
R10-3e (L/R) signs
The signal conductor cable from the signal cabinet to the pushbutton station shall be paid for under “Multi-conductor Cable”
Remove Accessible Pedestrian Signal
Measurement
Measurement for this Item shall be per each accessible pedestrian signal station removed.
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “Accessible Pedestrian Signal” removed.
The price bid shall include:
Removal of Pedestrian Push Button Assemblies
Removal of cable inside the pole
Radar Detection System and Cable
Furnish and Install Radar Detection System
Measurement
Measurement for this Item shall be per each Radar Detection Device furnished and installed.
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per each “Furnish/Install Radar Detection System” installed for:
Various types
The price bid shall include:
Furnishing, assembling and installing Radar Detection Device
Cabinet interface device
Splice boxes
Set-up and diagnostic software including programming and testing of all detection zones per signal plans.
Circuits
Mounting hardware
Cable will be paid for separately
Furnish and Install Radar Detection Cable
Measurement
Measurement for this Item shall be per linear foot of radar detection cable furnished and installed.
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per linear foot “Furnish/Install Radar Detection Cable” installed.
The price bid shall include:
Furnishing and installing radar detection cable
Making all connections to radar detection detectors and back panels
Remove Radar Detection System
Measurement
Measurement for this Item shall be per each Radar Detection System removed.
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per each “Radar Detection System” removed:
Various types
The price bid shall include:
Removal of Radar Detection Device
Removal of Cabinet interface device
Removal of cable
Emergency Vehicle Preemption Equipment and Cable
Furnish and Install Preemption Detector
Measurement
Measurement for this Item shall be per each Preemption Detector furnished and installed.
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per each “Furnish/Install Preempt Detector” for:
Various types
The price bid shall include:
Furnishing, installing and testing preemption detectors
Card rack (if not available in traffic signal cabinet)
Phase selector
Mounting hardware
Cable inside the pole will be paid for separately
Furnish and Install Preemption Cable
Measurement
Measurement for this Item shall be per linear foot of preemption cable furnished and installed.
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per linear foot “Furnish/Install Preemption Cable” installed.
The price bid shall include:
Furnishing and installing preemption cable
Making all connections to preemption detectors, phase selectors, and controller
Remove Preemption Detector
Measurement
Measurement for this Item shall be per each Preemption Detector removed.
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per each “Preempt Detector” removed:
Various types
The price bid shall include:
Removal of preemption detectors
Removal of card rack (if not installed by cabinet manufacturer)
Removal of preemption Cable
Battery Back-Up (BBU) System for Signal Cabinets
Furnish and Install BBU System for Signal Cabinet
Measurement
Measurement for this Item shall be per each BBU System component furnished and installed.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Furnish/Install BBU System” for:
Various components
Various types
The price bid shall include:
Furnishing, installing and testing the BBU system
Inverter/charger
Manual bypass switch
Integrated power transfer switch or automatic bypass switch
Batteries
Self-contained external mounted cabinet
Mounting hardware
Wiring, and all necessary hardware and software
Tray Cable
Furnish and Install Tray Cable
Measurement
Measurement for this Item shall be per linear foot.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per linear foot of “Tray
Cable” installed for:
Various types
Various sizes
The price bid shall include:
Furnishing and installing Tray Cable
Remove Tray Cable
Measurement
Measurement for this Item shall be per linear foot.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per linear foot of “Tray
Cable” removed:
Various types
Various sizes
The price bid shall include:
Removal of Tray Cable
Multi-conductor Cable
Furnish and Install Multi-conductor Cable
Measurement
Measurement for this Item shall be per linear foot.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per linear foot of “Multi-conductor
Cable” installed for:
Various types
Various sizes
The price bid shall include:
Furnishing and installing Multi-conductor Cable
Remove Multi-conductor Cable
Measurement
Measurement for this Item shall be per linear foot.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per linear foot of “Multi-conductor
Cable” removed:
Various types
Various sizes
The price bid shall include:
Removal of Multi-conductor Cable
Power Lead-in Cable
Measurement
Measurement for this Item shall be per linear foot of power lead-in cable installed.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per linear foot of “Insulated
Elec Condr” installed for:
Various types
Various sizes
The price bid shall include:
Furnishing and installing Power Lead-in Cable
Grounding Conductors
Measurement
Measurement for this Item shall be per linear foot.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per linear foot of “Bare
Elec Condr” installed for:
Various types
Various sizes
The price bid shall include:
Furnishing and installing Grounding Conductors
Ground Rod
Measurement
This Item is considered subsidiary to the various Traffic Signal Structures being installed.
Payment
The work performed and the materials furnished in accordance with this Item are subsidiary to various Traffic Signal Structures being installed and shall be subsidiary to the unit price
bid per various Traffic Signal Structures being installed, and no other compensation will be allowed.
Ground Boxes
Furnish and Install Ground Boxes
Measurement
Measurement for this Item shall be per each.
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per each “Ground Box” installed for:
Various sizes
Various types
The price bid shall include:
Furnishing and installing Ground Box
Excavation and backfill
Enclosures
Covers
Bolts
Gravel
Concrete apron when required
Remove Ground Boxes
Measurement
Measurement for this Item shall be per each.
Payment
The work performed and materials furnished in accordance with this Item shall be paid for at the unit price bid per each “Ground Box” removed for:
Various sizes
Various types
The price bid shall include:
Removing Ground Box
Excavation and backfill
Conduit
Furnish and Install Conduit
Measurement
Measurement for this Item shall be per linear foot.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per linear foot of “Conduit”
installed for:
Various types
Various sizes
The price bid shall include:
Furnishing and installing Conduit
Hanging
Strapping
Jacking
Boring
Tunneling
Trenching
Furnishing, placement and compaction of backfill
Encasing in steel or concrete
Replacing pavement structure
Sod
Riprap
Curbs
Other surfaces
Marking location of conduit (when required)
Furnishing and installing fittings
Junction boxes
Expansion joints
Materials
Equipment
Labor
Tools
Incidentals
Remove Conduit
Measurement
Measurement for this Item shall be per linear foot.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per linear foot of “Conduit”
removed for:
Various types
Various sizes
The price bid shall include:
Removing Conduit
Excavation and backfill as required
Traffic Signal Structures
Furnish and Install Pedestal and Push Button Pole Assembly
Measurement
Measurement for this Item shall be per each assembly furnished and installed.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Furnish/Install Ped or Push Button Pole Assembly” furnished and
installed for:
Various types
Various sizes
The price bid shall include:
Excavation and backfill
Furnishing and installing each Pedestal or Push Button Pole Assembly
Furnishing, placement and compaction of backfill
Anchor bolts
Clean-up
Furnish and Install Signal Pole – Vertical Mast Arm Pole
Measurement
Measurement for this Item shall be per each signal pole vertical mast arm pole furnished and installed.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Furnish/Install Signal Pole – Vertical Mast Arm Pole” installed
for:
Various types
The price bid shall include:
Excavation and backfill
Furnishing and installing each Signal Pole – Vertical Mast Arm Pole
Furnishing and installing vertical luminaire section, if specified
Installing luminaire arm, fixture, and lamp if specified
LED fixture shall be paid for separately
Erecting assembly on concrete foundation
Furnishing and placing anchor bolts, nuts, washers, and templates
Furnish and Install Mast Arm
Measurement
Measurement for this Item shall be per each Mast Arm furnished and installed.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Furnish/Install Mast Arm” furnished and installed for:
Various length intervals
Various types
The price bid shall include:
Furnishing, assembling and installing Mast Arm
Mounting equipment
Vibration dampers
Clean-up
Furnish and Install Luminaire Arm
Measurement
Measurement for this Item shall be per each Luminaire Arm furnished and installed.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Furnish/Install Luminaire Arm” furnished and installed for:
Various lengths
The price bid shall include:
Furnishing, assembling and installing Luminaire Arm
Mounting equipment
Clean-up
Furnish and Install ILSN Arm
Measurement
Measurement for this Item shall be per each ILSN Arm furnished and installed.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Furnish/Install ILSN Arm” furnished and installed”.
The price bid shall include:
Furnishing, assembling and installing ILSN Arm
Mounting equipment
Clean-up
Remove Pedestal and Push Button Pole Assembly
Measurement
Measurement for this Item shall be per each Pedestal or Push Button Pole Assembly removed.
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “Remove Ped or Push Button Pole Assembly” removed
The price bid shall include:
Removal of Pedestal or Push Button Pole Assembly
Remove Signal Poles
Measurement
Measurement for this Item shall be per each signal pole removed.
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “Remove Signal Pole” removed
The price bid shall include:
Removal of Signal Pole Assembly
Removal of luminaire arm, fixture, and lamp if specified
Remove Mast Arm
Measurement
Measurement for this Item shall be per each Mast Arm removed.
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “Remove Mast Arm” removed:
Various length intervals
Various types
The price bid shall include:
Removal of Mast Arm
Removal of Luminaire arm, if specified
Removal of Vibration dampers
Clean-up
Zinc Coated Steel Wire
Furnish and Install Zinc Coated Steel Wire
Measurement
Measurement for this Item shall be per linear foot.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per linear foot of “Zinc
Coated Steel Wire” installed for:
Various types
Various sizes
The price bid shall include:
Furnishing and installing Zinc Coated Cable
Testing wire strands
Materials
Equipment
Labor
Tools
Incidentals
Remove Zinc Coated Steel Wire
Measurement
Measurement for this Item shall be per linear foot.
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per linear foot of “Zinc Coated Steel Wire” removed.
Various types
Various sizes
Strain Pole
Furnish and Install Strain Pole
Measurement
Measurement for this Item shall be per pole.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per each of “Strain Pole”
installed for:
Various types
Various sizes
The price bid shall include:
Furnishing and installing Strain Pole
Remove Strain Pole
Measurement
Measurement for this Item shall be per pole.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per each of “Strain Pole”
removed:
Various types
Various sizes
The price bid shall include:
Removal of Strain Pole
Timber Pole
Furnish and Install Timber Pole
Measurement
Measurement for this Item shall be per pole.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per pole of “Timber Pole”
installed for:
Various types
Various sizes
The price bid shall include:
Furnishing and installing Timber Pole
Remove Timber Pole
Measurement
Measurement for this Item shall be per pole.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per each of “Timber Pole”
removed:
Various types
Various sizes
The price bid shall include:
Removal of Timber Pole
Foundations
Furnish and Install Foundations
Measurement
Measurement for this Item shall be per linear foot of each type.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Foundation” installed for:
Various types
Various sizes
The price bid shall include:
Coordination and notification
Exploratory excavation (as needed)
Excavation
Disposal of excess material
Hauling
Protection of the excavation
Forms
Reinforcing steel
Grounding rods
Concrete
Installing Foundation
Clean-up
Testing
Remove Foundations
Measurement
Measurement for this Item shall be per linear foot of each type.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Foundation” removed:
Various types
Various sizes
The price bid shall include:
Removing the foundations 2’ below grade
Storing the components to be reused or salvaged
Disposal of unsalvageable material
Backfilling and surface placement
Loading and hauling
Equipment, materials, tools, labor, and incidentals
Electrical Meter Pedestal
Furnish and Install Electrical Meter
Measurement
Measurement for this Item shall be per each type.
Payment
The work performed and the materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Electrical Meter” installed for:
Various types
The Price shall include:
Furnish and installing the electrical meter
Concrete Pad
Installing foundation
Clean-up
Labor
Tools
Incidentals
Remove Electrical Meter
Measurement
Measurement for this Item shall be per each type.
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “Electrical Meter” removed.
Various types
The Price shall include:
Removal of electrical meter
Removal of foundation
Backfill
Labor
Tools
Incidentals
ILSN Sign
Furnish and Install ILSN Sign
Measurement
Measurement for this Item shall be per each sign.
Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid per each “ILSN Sign” installed
for:
Various types
Various sizes
The price bid shall include:
Furnishing and installing ILSN Sign
Wiring
Testing
Troubleshooting
Remove ILSN Sign
Measurement
Measurement for this Item shall be per each sign removed
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “ILSN Sign” removed:
Various types
Various sizes
The Price shall include:
Removal of the ILSN
Labor
Tools
Incidentals
Controller Cabinet Assembly
Furnish and Install Controller Cabinet Assembly
Measurement
Measurement for this Item shall be per each assembly installed.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Furnish/Install Controller & Cabinet Assembly” installed for:
Various mounting methods
Various types
The price bid shall include:
Taking precautions to ensure material is not damaged during transportation
Installing the controller cabinet assembly on the foundation or support
Furnishing and installing the controller cabinet break-a-way foundation
Furnishing and installing the signal controller
Power supply
Conflict monitor
Load switches
Conduit within 6” of foundation
Grounding rod
Wiring
Cable within 6” of foundation
Concrete foundation pad
Terminating wiring
Testing
Troubleshooting
Remove Controller Cabinet Assembly
Measurement
Measurement for this Item shall be per each assembly removed
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “Controller & Cabinet” removed:
Various types
The Price shall include:
Removing the various cabinet assemblies and components
Removing the foundations 2’ below grade
Storing the components to be reused or salvaged
Disposal of unsalvageable material
Backfilling and surface placement
Loading and hauling
Equipment, materials, tools, labor, and incidentals
Luminaire Head
Furnish and Install Luminaire Head
Measurement
Measurement for this Item shall be per each luminaire head furnished and installed.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Luminaire Head” furnished and installed.
The price bid shall include:
Furnishing, assembling, and installing the luminaire head assembly
Mounting attachments and completing wiring connections
Cable inside the pole will be paid for separately
Remove Luminaire Head
Measurement
Measurement for this Item shall be per each luminaire head removed
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “Luminaire Head” removed:
Various types
The Price shall include:
Removing the luminaire head
Loading and hauling
Equipment, materials, tools, labor, and incidentals
CCTV
Furnish and Install CCTV
Measurement
Measurement for this Item shall be per each PTZ camera furnished and installed.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “CCTV Camera” installed for:
Various types
The price bid shall include:
Furnish and installing the CCTV Camera
Mounting hardware
Wiring (CAT5E)
Labor
Tools
Incidentals
Remove CCTV
Measurement
Measurement for this Item shall be per each CCTV camera removed
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “CCTV Camera” installed for:
Various types
The Price shall include:
Removal of the CCTV Camera
Labor
Tools
Incidentals
VIVD
Furnish and Install VIVD
Measurement
Measurement for this Item shall be per each VIVD camera furnished and installed.
Payment
The work performed and materials furnished in accordance to this Item shall be paid for at the unit price bid per each “VIVDCamera” installed for:
Various types
The price bid shall include:
Furnishing, assembling and installing VIVD Camera
Cabinet interface device
Splice boxes
Set-up and diagnostic software including programming and testing of all detection zones per signal plans.
Mounting hardware
Labor
Tools
Incidentals
Cable will be paid for separately
Remove VIVD
Measurement
Measurement for this Item shall be per each VIVD camera removed
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “VIVD Camera” installed for:
Various types
The Price shall include:
Removal of the VIVD Camera
Labor
Tools
Incidentals
Wireless Radio System
Furnish and Install Wireless Radio System
Measurement
Measurement for this Item shall be per each Wireless Radio System furnished and installed.
Payment
The work performed and the materials furnished in accordance to this Item shall be paid for at the unit price bid per each “Wireless Radio System” furnished and installed for:
Various types
The Price shall include:
Furnish and installing the Wireless Radio System
Mounting hardware
Wiring (CAT5E)
Labor
Tools
Incidentals
Remove Wireless Radio System
Measurement
Measurement for this Item shall be per each Wireless Radio System removed
Payment
The work performed in accordance to this Item shall be paid for at the unit price bid per each “Wireless Radio System” removed:
Various types
The Price shall include:
Removal of the Wireless Radio System
Labor
Tools
Incidentals
Cast-in-Place Concrete
Measurement
This Item is considered subsidiary to the structure or Items being placed.
Payment
The work performed and the materials furnished in accordance with this Item are subsidiary to the structure or Items being placed and no other compensation will be allowed.
REFERENCES
Abbreviations and Acronyms
VIVDS: Video imaging vehicle detection system
BBU: Battery back-up system
LED: light emitting diode
APS: Accessible Pedestrian Signal
Definitions
Battery Back-Up (BBU) System
Automatic Bypass Relay
A unit connected between the inverter/charger, and the load, which can automatically switch power to the controller cabinet service panel from inverter output power to utility line power,
in the event of an inverter failure.
Battery Back-Up System (BBU System)
The battery back-up system includes but is not limited to a manual bypass switch, automatic bypass switch or power transfer switch, inverter/charger, batteries, wiring, external cabinet
and all necessary hardware for system operation.
Battery Back-Up System Software (BBU System software)
All software associated with operation, programming and functional requirements of the BBU system.
Battery Monitoring Device
The device which monitors battery temperatures and charge rate of the batteries used in the BBU system. Shall be an ambient sensor internal to the inverter/charger.
Batteries
Standard 12V batteries wired in series with a cumulative minimum rated capacity of 210 amp-hours.
Boost
When enabled, the BBU inverter/charger shall automatically switch into this mode to raise the utility line voltage when it drops below a preset limit. The limit may be user defined
or use manufacturer default settings (typically 100V AC).
Buck
When enabled, the unit shall automatically switch into this mode to reduce the utility line voltage when it rises above a preset limit. The limit may be user defined or use manufacturer
default settings (typically 135V AC).
External Cabinet
The structure which houses the complete system components for the BBU System.
Inverter/Charger
The unit which converts the DC voltage input into 120 VAC output for the traffic signal cabinet to operate. As a minimum the inverter/charger shall be rated for 1400 VA, 1000 watts.
Inverter Line Voltage
The power supplied from the BBU system to the traffic signal cabinet from the BBU System inverter.
Manual Bypass
Manual switch that allows user to bypass BBU power to service system equipment. Manual bypass switch switches utility line power directly to cabinet.
Signal Operation Mode
A signalized intersection generating a 700W load when running in normal operation.
Signal Flash Mode
A signalized intersection generating a 300W load when running in the flash mode of operation.
Utility Line Voltage
The 120V AC power supplied to the BBU system
Back Plate
A thin strip of material extending outward from all sides of a signal head.
Cast-in-Place Concrete
Cementitious Materials
Portland cement alone or in combination with 1 or more of the following:
Blended hydraulic cement
Fly ash
Other pozzolans
Ground granulated blast-furnace slag
Silica fume
Subject to compliance with the requirements of this specification
Reference Standards
Reference standards cited in this Specification refer to the current reference standard published at the time of the latest revision date logged at the end of this Specification, unless
a date is specifically cited.
American Standard Testing Materials (ASTM)
ASTM B85-57T – “Standard Specification for Aluminum-Alloy Die Castings”
ASTM B26-57T – “Standard Specification for Aluminum-Alloy Sand Castings”
ASTM B-209-57T – “Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate”
ASTM D-1535 – “Standard Practice for Specifying Color by the Munsell System”
ASTM B-033 – “Standard Specification for Tinned Soft or Annealed Copper Wire for Electrical Purposes”
ASTM B-8 – “Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft”
ASTM A3250-N – “High Strength Galvanized Steel Bolts”
ASTM A490-N – “High Strength Galvanized Steel Bolts”
ASTM A123 – “Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products”
ASTM A153 – “Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware”
A36, Standard Specification for Carbon Structural Steel.
A153, Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware.
A193, Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service and Other Special Purpose Applications.
A615, Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement.
A706, Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement.
C31, Standard Practice for Making and Curing Concrete Test Specimens in the Field.
C33, Standard Specification for Concrete Aggregates.
C39, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.
C42, Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete.
C94, Standard Specification for Ready-Mixed Concrete.
C109, Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-inch or {50-milimeter] Cube Specimens)
C143, Standard Test Method for Slump of Hydraulic-Cement Concrete.
C171, Standard Specification for Sheet Materials for Curing Concrete.
C150, Standard Specification for Portland Cement.
C172, Standard Practice for Sampling Freshly Mixed Concrete.
C219, Standard Terminology Relating to Hydraulic Cement.
C231, Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method.
C260, Standard Specification for Air-Entraining Admixtures for Concrete.
C309, Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete.
C494, Standard Specification for Chemical Admixtures for Concrete.
C618, Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete.
C881, Standard Specification for Epoxy-Resin-Base Bonding Systems for Concrete.
C989, Standard Specification for Ground Granulated Blast-Furnace Slag for Use in Concrete and Mortars.
C1017, Standard Specification for Chemical Admixtures for Use in Producing Flowing Concrete.
C1059, Standard Specification for Latex Agents for Bonding Fresh to Hardened Concrete.
C1064, Standard Test Method for Temperature of Freshly Mixed Hydraulic-Cement Concrete.
C1240, Standard Specification for Silica Fume Used in Cementitious Mixtures.
E1155, Standard Test Method for Determining FF Floor Flatness and FL Floor Levelness Numbers.
F436, Standard Specification for Hardened Steel Washers.
Texas Manual on Uniform Control Devices (TMUTCD) (latest edition)
Federal Aviation Administration (FAA)
FAA L-802-B
Institute of Transportation Engineers (ITE):
Vehicle Traffic Control Signal Head – Light Emitting Diode (LED) Circular Signal Supplemental (VTCSH), adopted June 2005.
Vehicle Traffic Control Signal Head Part 3: Light Emitting Diode (LED) Arrow Traffic Signal Modules.
Equipment and Materials Standards, Vehicle Traffic Control Signal Heads (VTCSH) Part 2: LED Vehicle Signal Modules.
PTCSI LED Signal Modules Draft Version of February 2009
Luminous intensity, uniformity and viewing angles
ChromatiCity
Underwriter’s Laboratory Incorporate (UL)
Standard UL-651 – “Schedule 40 and 80 Rigid PVC Conduit and Fittings”
Standard UL-514B – “Conduit, Tubing, and Cable Fittings
American Standards Institute (ANSI)/Institute of Electrical and Electronics Engineers (IEEE)
Section 6.1.2 ANSI/IEEE C62.41.2 – 2002, 3KV, 2 Ω
Section 6.1.1 ANSI/IEEE C62.41.2 – 2002, 6KV, 30Ω
Transient suppression
MIL-STD-883
Test Method 2007
Mechanical vibration
MIL-STD-810F
Procedure 1, Rain & Blowing Rain
Moisture resistance
National Electrical Manufacturer’s Association (NEMA)
Section 2.1.6 NEMA TS 2-2003
Section 2.1.8 NEMA TS 2-2003
Transient voltage protection
Controller compatibility
Federal Communications Commission (FCC)
Title 47 Sec 15 Sub. B
Electronic noise
International Municipal Signal Association (IMSA)
IMSA 5-1
IMSA 7-1
IMSA 19-1
IMSA 20-1
National Fire Protection Association (NFPA) / National Electric Code (NEC)
NFPA 70
Wiring
International Electrotechnical Commission (IEC)
Section 8.2 IEC 1000-4-5
Section 8.0 IEC 1000-4-12
Transient suppression
American Association of State Highway and Transportation (AASHTO):
M182, Burlap Cloth Made from Jute or Kenaf.
American Concrete Institute (ACI):
ACI 117 Specification for Tolerances for Concrete Construction and Materials
ACI 301 Specifications for Structural Concrete
ACI 305.1 Specification for Hot Weather Concreting
ACI 306.1 Standard Specification for Cold Weather Concreting
ACI 308.1 Standard Specification for Curing Concrete
ACI 318 Building Code Requirements for Structural Concrete
ACI 347 Guide to Formwork for Concrete
American Institute of Steel Construction (AISC):
303, Code of Standard Practice for Steel Buildings and Bridges.
American Welding Society (AWS).
D1.1, Structural Welding Code - Steel.
D1.4, Structural Welding Code - Reinforcing Steel.
Concrete Reinforcing Steel Institute (CRSI)
Manual of Standard Practice
Texas Department of Transportation
Standard Specification for Construction and Maintenance of Highways, Streets and Bridges (latest edition)
North Central Texas Council of Governments (NCTCOG)
Standard Specifications for Public Works Construction, 4th Edition
ADMINISTRATIVE REQUIREMENTS
Coordination
City must approve any deviation from Specification ten (10) working days prior to installation.
Preinstallation Field Inspection Meetings
48 hours’ Notice of Intention to establish final location of any foundations, bases, conduit, and detectors.
48 hours’ notice to Texas811, City of Denton Water/Sewer/Street Lights/Storm Drains (940-349-8200), and City of Denton Traffic Signals/Signs/Markings (940-349-8462).
Scheduling
48 hours advanced approval for existing traffic signal turn off of flash operation.
48 hours advanced notice of placing traffic signal into operation.
If there is equipment provided by the City, 3 Working Days’ notice for City provided equipment pick-up is required.
Cast-in-Place Concrete – Work Included
Design, fabrication, erection and stripping of formwork for cast in place concrete including shoring, reshoring, falsework, bracing, proprietary forming systems, prefabricated forms,
void forms, permanent metal forms, bulkheads, keys, blockouts, sleeves, pockets and accessories.
Erection shall include installation in formwork of items furnished by other trades.
Furnish all labor and materials required to fabricate, deliver and install reinforcement and embedded metal assemblies for cast in place concrete, including steel bars, welded steel
wire fabric, ties, supports and sleeves.
Furnish all labor and materials required to perform the following:
Cast-in-place concrete
Concrete mix designs
Grouting
All submittals shall be approved by the City prior to delivery and/or fabrication for specials.
SUBMITTALS
Submittals shall be in accordance with Section 01 33 00.
All submittals shall be approved by the City prior to delivery and/or fabrication for specials.
ACTION SUBMITTALS/INFORMATIONAL SUBMITTALS
Product Data Sheets are required for:
Traffic signal housing, louvered back plates, visors, louvers, LED lamps, and mounting hardware
Pedestrian signal housing, LED lamps, and mounting hardware
Accessible Pedestrian Signals
Conduit
Battery back-up systems
Multi-conductor cable
Power lead-in cable
Ground boxes
Grounding conductor
Grounding rod
Concrete
Design Mixtures
For each concrete mixture submit proposed mix designs in accordance with ACI 318, chapter 5.
Submit each proposed mix design with a record of past performance.
Submit alternate design mixtures when characteristics of materials, Project conditions, weather, test results or other circumstances warrant adjustments.
Indicate amounts of mixing water to be withheld for later addition at Project site.
Include this quantity on delivery ticket.
Steel Reinforcement Submittals for Information
Mill test certificates of supplied concrete reinforcing, indicating physical and chemical analysis.
Vibration dampers
Standard and Decorative Traffic Signal Structures
Miscellaneous items supplied
DELIVERY, STORAGE, AND HANDLING
Storage and Handling Requirements
Parts shall be properly protected so that no damage or deterioration occurs during a prolonged delay from the time of shipment until installation.
Exposed anchor bolts shall be protected until pole shaft is installed.
Finished iron or steel surfaces not painted shall be properly protected to prevent rust and corrosion.
Prevent plastic and similar brittle items from being exposed to direct sunlight and extremes in temperature.
The Contractor shall secure and maintain a location to store the material in accordance with Section 01 50 00.
Delivery and Acceptance
Inspect all City furnished materials prior to taking possession. Any damages after taking possession shall be the responsibility of the Contractor.
Arrange pick up all City furnished materials and deliver them to the Site.
Cast-in-Place Concrete
Steel Reinforcement
Deliver, store, and handle steel reinforcement to prevent bending and damage.
Avoid damaging coatings on steel reinforcement.
Waterstops
Store waterstops under cover to protect from moisture, sunlight, dirt, oil and other contaminants.
WARRANTY
Manufacturer Warranty
Manufacturer’s warranty shall be in accordance with City of Denton requirements which includes the contractor providing a list of materials provided, serial numbers, and end of warranty
dates.
A 2 year warranty shall be required on all equipment furnished by the Contractor.
A 5 year unconditional warranty shall be required on all batteries for the battery back-up systems furnished by the Contractor.
A 5 year warranty shall be required on all APS units.
Extended Correction Period
Contractor responsible for correcting any substandard workmanship and/or materials for 24 months from the date the signal is accepted by the City.
QUALITY ASSURANCE
Cast-in-Place Concrete
Manufacturer Qualifications
A firm experienced in manufacturing ready-mixed concrete products and that complies with ASTM C94 requirements for production facilities and equipment
Manufacturer certified according to NRMCA's "Certification of Ready Mixed Concrete Production Facilities”
Source Limitations
Obtain each type or class of cementitious material of the same brand from the same manufacturer's plant, obtain aggregate from 1 source and obtain admixtures through 1 source from a
single manufacturer.
ACI Publications
Comply with the following unless modified by requirements in the Contract Documents:
ACI 301 Sections 1 through 5
ACI 117
Concrete Testing Service
Engage a qualified independent testing agency to perform material evaluation tests.
PRODUCTS
PRODUCTS TO BE FURNISHED FROM THE CITY
Refer to Drawings and Contract Documents to determine if any Items are to be purchased by the City and installed by the Contractor.
ASSEMBLIES, EQUIPMENT, PRODUCT TYPES, AND MATERIALS
Manufacturers
The manufacturer must comply with this Specification and related Specifications.
Any equipment, product type, or material that is not listed in this Specification or in TxDOT’s Material Producer List is considered a substitution and shall be submitted in accordance
with Section 01 25 00 and not installed until approved.
http://www.txdot.gov/inside-txdot/division/construction/producer-list.html
If more than 1 unit of a given bid item is required, then the Contractor shall ensure that all units are the product of 1 manufacturer, unless otherwise directed by the Traffic Management
Manager or designee. No mix or matching will be allowed.
In other Part 2 articles where titles below introduce lists, the following requirements apply to product selection:
Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, products specified.
Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, manufacturers
specified.
Description
Regulatory Requirements
Traffic signal shall meet or exceed standards set forth by the most current version of the Texas Manual on Uniform Traffic Control Devices (TMUTCD), National Electric Code (NEC), Institute
of Transportation Engineers (ITE), American Society for Testing and Materials (ASTM), American Standards Institute (ANSI), and National Electrical Manufacturer’s Association (NEMA).
It is the Contractor's responsibility to furnish all materials necessary to complete each traffic signal installation, whether the item is specifically mentioned or not. All unspecified
materials (i.e., electrical tape, bolts, and nuts, etc.) shall meet the requirements of the National Electrical Code.
All materials supplied by the Contractor shall be of new, un-depreciated stock.
Traffic Signal Materials
LED Traffic Signal Head Assemblies
Vehicle Signal Housings
The product bid shall be manufactured by the following manufacturer:
Econolite
All traffic signal housings shall be standard size with 12 inch LED lenses.
Traffic signal housings shall be black polycarbonate.
All miscellaneous parts such as hinge pins, lens clips, locking devices, etc. shall be made of a non-corrosive material.
The housing of the signal heads shall be constructed of interchangeable sections.
All exterior mating surfaces shall be flat to assure waterproof and dust-proof assembly of sections.
The top and bottom of the sections will have an opening approximately 2 inches in diameter to permit the entrance of 1 ½ inch pipe nipples.
Each section shall have serrated openings or equivalent, for providing a positive and locked positioning of signal sections when used with serrated mast arm or span wire mounting brackets.
The door and lens housing shall be equipped with a watertight and dust-tight molded neoprene gasket.
The door of each signal section shall be attached to the housing in a watertight and dust-proof manner.
Non-corrosive hinge pins and 2 wing screws will be furnished on each door for opening and closing without the use of special tools.
These hinges and screws shall be of such design as to allow even gasket pressure.
Each signal head section shall be furnished with a detachable tunnel type visor, black in color, unless otherwise specified.
Visors shall be a minimum of 10 inches in length (depth) for 12 inch signals (tunnel type).
Visors shall be attached to the door assemblies in a manner that facilitates field removal and installation.
Visors shall be Poly-tunnel visor (1-piece)
Traffic signal housing shall be furnished with LED inserts that comply with this Specification and shall be in the standard red, amber and green configuration as specified by the most
current version of the TMUTCD.
A screw down type terminal block shall be provided with each signal head for facilitating field wiring.
The pigtail leads from the lamp receptacles shall be connected to a common terminal block within the head assembly.
Each terminal block will be at least a 6 position, 12 terminal strip securely fastened at both ends to the signal housing.
The housing and outside surface of the visors shall be black in color only.
The inside surface of visors shall be a “Dull” or “Flat-black” color.
LED Traffic Signal Lamp Unit
All vehicle signal lamps shall be LED.
The product bid shall be manufactured by one the following manufacturers:
Duralight
Duralight 07 High Flux Models
JXC-300 (circular)
JXJ-300 (arrow)
The equipment shall conform to the applicable requirements of: the Underwriter’s Laboratory Incorporate (UL), the American Society for Testing and Materials (ASTM), the American Standards
Institute (ANSI), the National Electrical Manufacturer’s Association (NEMA), and other applicable standards and specifications.
If proper orientation of the LED unit is required for optimum performance, a clear, durable and unmistakable marking shall be provided on each lens as to its proper orientation (top
or bottom).
The manufacturer’s name, serial number and other necessary identification shall be permanently marked on the backside of the LED traffic signal lamp unit. A label shall be placed on
the unit certifying compliance to ITE standards.
Documentation Requirements
Each LED traffic signal lamp unit shall be provided with the following documentation:
Complete and accurate installation wiring guide
Contact name, address, and telephone number for the representative, manufacturer, or distributor for warranty repair.
A copy of a test report certified by an independent laboratory that the LED traffic signal lamp model submitted meets all the requirements of these Specifications in accordance with
ITE VTSCH Part 2.
Schematic diagram for each unit, along with any necessary installation instructions
For each unit submitted, the manufacturer name, brand and model number of LEDs used shall be provided, along with the LED manufacturer’s recommended drive current and degradation curves.
Warranty information from manufacturer
Quality assurance testing documentation
Signal Head Louvers
Louvers shall be provided for those signal sections indicated in the Drawings.
All louvers shall be of such design as to provide visibility of the lens for the intended lane of traffic as indicated by the Drawings and block visibility to all other lanes.
Back Plates
Material
Aluminum,
One-piece
Finishes
Aluminum: powder coat
Color(s)
Face: flat black
Back: flat black
Plates shall be vented
Mounting Hardware
For steel poles:
PELCO 3-Section Astrobrac Assembly:
144 Inch Cable and Gusseted Tube #AS-0125-3-144
PELCO 4-Section Astrobrac Assembly:
144 Inch Cable and Gusseted Tube #AS-0125-4-144
PELCO 5-Section Astrobrac Assembly:
144 Inch Cable and Gusseted Tube #AS-0125-5-144
PELCO 5-Section Astrobrac Cluster Assembly:
144 Inch Cable and Gusseted Tube #AS-0138-2-144
For a span wire’s bottom tether (City requirement):
PELCO 3-Section horizontal span wire assembly:
#SP-3058-TX-3-ALO
PELCO 4-Section horizontal span wire assembly:
#SP-3058-TX-4-ALO
PELCO 5-Section horizontal span wire assembly:
#SP-3058-TX-5-ALO
Each bracket shall be complete with all necessary bolts, washers, gaskets, etc. to allow assembly of the signal to the bracket and the bracket to the mast arm.
LED Countdown Pedestrian Signal Head Assemblies
General
Furnish a single, self-contained module, as defined in TxDOT DMS-11130, Pedestrian Signal Heads. Ensure that installation does not require special tools.
Provide LED’s rated for 100,000 hours of continuous operation over a temperature range of -40°C to +74°C.
Ensure modules are rated for a minimum life of 60 months.
Ensure modules meet all parameters of this specification throughout this 60-month period.
Housing
The product bid shall be manufactured by the following manufacturers:
McCain Traffic Supply
Housing units shall be new and unweathered.
Housing shall be in accordance with TxDOT DMS-11130.
The housing shall be black, polycarbonate, clam shell type.
The approximate size of housing (including body, door, and ears) shall be 16.0 inches H x 18.75 inches W x 8 inches D.
All necessary hardware shall be provided with housing.
Mounting hardware
Mounting hardware shall be the clamshell mount type #4805 manufactured by McCain.
Module
All pedestrian signal lamps shall be LED.
The product bid shall be manufactured by the following manufacturers:
Duralite
Countdown Model JXM-400VIEIL
Modules shall comply with TxDOT DMS-11130.
Electrical
General
Furnish modules that are operationally compatible with traffic signal controllers, cabinets and accessories manufactured to City specifications.
Accessible Pedestrian Push Button Station Assembly
The product bid shall be manufactured by the following manufacturers:
Polara APS-INAV
Audible/Tactile Pedestrian Push Button
Black base/black lid
9 inch X 15 inch instructional sign
Radar Detection Equipment and Cable
Radar presence detection
The product bid shall be manufactured by the following manufacturers:
SmartSensor Matrix by Wavetronix
Radar advanced detection
The product bid shall be manufactured by the following manufacturers:
SmartSensor Advance™ by Wavetronix
Radar Detection Cable
The product bid shall be manufactured by the following manufacturers:
SmartSensor 6-conductor cable by Wavetronix
The cable length shall not exceed 2000 feet for the operational baud rate of RS-485 communications (9.6 Kbps).
If 12 VDC is being supplied for the detector then the cable length shall not exceed 90 feet.
If 24 VDC is being supplied for the detector then the cable length shall not exceed 500 feet.
Emergency Vehicle Preemption Equipment and Cable
The product bid shall be manufactured by the following manufacturers:
Global Traffic Technologies – Opticom™
Provide new, corrosion resistant materials.
Equipment shall be compatible with City of Denton equipment.
Emergency Preemption Phase Selector
Shall be a plug-in two channel (762) or four channel (764), dual priority, encoded signal device.
A card rack shall be supplied, if not already present in cabinet by manufacture, with every Emergency Preemption Phase Selector.
Emergency Preemption Detector
Furnish Emergency Preemption Detector that shall seamlessly operate with the vehicle emitters used in the project area.
721 – Single channel dual indication for a roadway that has a single leg approach (typically the single leg of a “T” and/or for a one-way roadway and/or the like)
722 – Dual channel duel indication for a roadway that has dual leg approaches.
Emergency Preemption Detector Cable
Shall be Model 138 Opticom™ cable, or approved equivalent, and shall be compatible with all other equipment used in this specification.
Battery back-up (BBU) System for Signal Cabinets
The product bid shall be manufactured by the following manufacturers:
Alpha Systems FXM 2000, external cabinet, 4 battery system
Batteries
Provide batteries from the same manufacturer/vendor of the BBU system.
All external cabinets shall be NEMA 3R rated.
Documentation
Cabinet wiring diagrams and equipment manuals must be provided for each cabinet.
Detailed directions/instructions for installation, programming and maintenance for each BBU unit must be included.
Tray Cable
General Requirements. Provide new materials that are listed for the intended use. Comply with the applicable provisions of the National Electrical Code (NEC®) and National Electrical
Manufacturers Association (NEMA) standards. Provide UL® listed components. When UL® is referenced, consider materials certified by any current Nationally Recognized Testing Laboratory
(NRTL) as shown on the Occupational Safety and Health Administration (OSHA) website. Faulty fabrication or poor workmanship in materials, equipment, or installation will be justification
for rejection. Provide manufacturer’s warranties or guarantees when offered as a customary trade practice. Provide round tray cable with non-hygroscopic filler suitable for direct earth
burial in wet location, for installation outdoors in conduit, or as an aerial cable supported by a messenger where sunlight-resistant rating is required. Clearly and durably mark the
outer surface of the jacket by permanent printing to show the insulation type, rating, and manufacturer. Apply markings at 2-ft. maximum intervals.
Conductors. Provide new three or four individually insulated soft annealed copper conductors in accordance with ASTM B 3 and as required by the plans. Meet UL® Subject 1277 and NEC®
articles pertaining to “Cable Trays” and “Power and Control Cable Type TC” requirements. Provide tray cable rated for a minimum of 600 V, 90°C dry and 75°C wet, unless other insulation
type or rating is specifically shown on the plans. Meet the requirements of the 70,000-btu “Cable Tray Propagation Test” per IEEE®-383 and show reserve capabilities by also passing
the 210,000-btu flame test. Ensure the cable meets the following requirements.
Provide individually insulated conductors with XHHW insulation and an overall polyvinyl chloride (PVC) jacket.
Clearly and durably mark the outer surface of the jacket at 2-ft. maximum intervals by indent printing to show the insulation type, rating, and manufacturer.
Assemble round conductors and provide non-hygroscopic filler to prevent flattening of cable.
Ensure cable is suitable for use outdoors, under exposure to ultraviolet light, and in wet locations.
Insulation. Provide black, white, and green conductor insulation or black, red, and green conductor insulation, as directed by the Engineer, for three-conductor tray cable. Provide black,
red, white, and green conductor insulation, as directed by the Engineer, for four-conductor tray cable.
Multi-conductor Cable
All traffic signal cable conductors for both vehicle and pedestrian heads shall be multi-conductor capable of operating at 600 volts maximum, and suitable for use at conductor temperatures
not exceeding 75 degrees C (167 degrees F).
Multi-conductor cable shall be either stranded IMSA 19-1 or 20-1, #14 AWG, stranded copper wire.
The copper wire (before insulating) shall meet the requirements of the latest American Society for Testing and Materials (ASTM) standards for uncoated wire.
Ensure fillers are non-metallic, moisture resistant, non-wicking material.
Supply cables that clearly show the name of the manufacturer and the IMSA specification number applied at approximate 2 foot intervals to the outer surface of the jacket by indent printing.
All proprietary equipment cabling shall be manufacturer supplied and properly installed by the contractor in compliance with the manufacturer.
All electrical connectors for breakaway poles shall be breakaway (Buchannan 65U, Bussman HEBW Littlefuse LEF, or equal). All electrical connections for neutrals shall be breakaway, shall
have a white color marking, and shall have permanently installed solid neutral Buchannan 20U Bussman HET Littlefuse LET, or equal. Breakaway fuse holders shall be 1-pole or 2-pole,
watertight, breakaway, in-line fused connector designed for used with breakaway pole bases that meet the following requirements:
Are UL listed, 600-V-rated
Prevent energized parts from being exposed after breaking away,
Have breakaway connector boots that fit multiple wire sizes (may be dual wire “feed-in-feed-out type,”)
Have neutral connectors marked white
Power lead-in cable
Power lead-in cable shall be stranded RHW copper wire and suitable for A/C electric service.
The cable shall be capable of operating at 600 volts maximum and suitable for use at conductor temperatures not exceeding 167 degrees Fahrenheit (75 degrees Celsius).
Material and construction shall be in accordance with the applicable requirements of IMSA and NEC standards.
Conductors shall be stranded, anneal coated copper.
Copper wire before insulating or stranding, shall meet the requirements of the latest edition of ASTM B-033 (for coated wire).
Stranding shall be class B, in accordance with the latest edition of ASTM B-8.
Insulation shall be THHN and comply with Federal Specification A-A-59544 and all applicable ASTM standards.
Grounding Conductor
The grounding conductor shall be a #6 AWG solid copper wire.
The conductor shall be bonded to all ground rods.
Ground Rod
Ground rod electrodes shall be copper-bonded steel being at least 5/8 inch in diameter.
All ground rods shall be a minimum of 8 feet.
All ground rods shall be a minimum of 6 feet in ground.
Ground Boxes
Traffic Signal Ground boxes shall be as follows:
Martin Enterprises or equivalent, size 24x36x24 (TxDOT Type D)
Provide fabricated precast polymer concrete ground boxes in accordance with TxDOT DMS-11070, “Ground Boxes”
Ground boxes shall have bolted down covers.
Cast iron covers are not allowed
Covers will clearly contain the words “TRAFFIC SIGNAL”.
Fiber Ground Boxes shall be as follows:
Martin Enterprises or equivalent, size 24x36x36 (TxDOT ITS)
Provide fabricated precast polymer concrete ground boxes in accordance with TxDOT DMS-11070, “Ground Boxes”
Ground boxes shall have bolted down covers.
Cast iron covers are not allowed
Covers will clearly contain the words “DANGER HIGH VOLTAGE TRAFFIC MANAGEMENT”.
Conduit
All conduits shall be PVC Schedule 40 unless otherwise noted.
Provide new materials that comply with the details shown on the plans, the requirements of this item, and TxDOT DMS-11030, “Conduit”.
Where specified on the plans, provide.:
Rigid Metal Conduit (RMC)
Intermediate Metal Conduit (IMC)
Electrical Metallic Tubing (EMT)
Polyvinyl Chloride (PVC) conduit
High Density Polyethylene (HDPE) conduit
Liquidtight Flexible Metal Conduit (LFMC)
Liquidtight Flexible Nonmetallic Conduit (LFNC)
Provide other types of conduit not on the MPL that comply with the details shown on the plans and the NEC. Fabricate fittings such as junction boxes and expansion joints from a material
similar to the connecting conduit, unless otherwise shown on the plans. Use watertight fittings. Do not use set screw and pressure-cast fittings. Steel compression fittings are permissible.
When using HDPE conduit, provide fittings that are UL listed as electrical conduit connectors or thermally fused using an electrically heated wound wire resistance welding method.
Traffic Signal Structures
Design
Traffic Signal Poles shall be City of Denton Standard per City of Denton TS Series, Revision E.
If TxDOT Structures are called out on plans, they shall be per the latest TxDOT Standards for 80 MPH wind zone applications.
Markings
All pole shafts and mast arms for this project shall be marked with the identification numbers from the drawings to facilitate assembly of these items in the field.
For Projects with multiple intersections, the pole shafts and mast arms shall be identified by intersection.
Vibration dampers
Steel mast arms ranging above 28 feet in length shall be provided with aluminum vibration dampers.
Structure Finish
Standard
The traffic signal poles and mast arms shall be galvanized in accordance to ASTM A123. Each component must be completely coated in a single dip. No double dipping will be allowed.
All miscellaneous hardware shall be galvanized per ASTM A153.
Decorative
As shown in the plans.
Luminaire Arm
Luminaire arms shall be fabricated in accordance with the Drawings.
Pedestal Structures
Pedestal structures for mounting pedestrian signals or median-mount traffic signals shall be furnished with a transformer base, pole cap, and all necessary hardware for proper installation.
Height of pole shall be set in the Drawings, but shall not exceed 15 feet.
All other hardware necessary for complete installation of traffic signal structures, i.e., simplex plates, pole caps, transformer bases, anchor bolts, etc. shall be hot dipped galvanized
and conform to the design, dimension, and strength requirements of said items as indicated on the Drawings.
All hardware shall be packed on a per pole basis.
Zinc Coated Steel Wire
Provide new materials in accordance with ASTM A475, Utilities Grade or better, class A coating. These requirements include, but are not limited to the properties given in Table 1. Furnish
7 wires per strand.
Table 1
Dimensions and Properties
Nominal Diameter of Strand
Nominal Diameter of Coated Wires
Approx.
Weight per 1,000 ft.
Minimum Breaking Strength
Minimum Zinc Coating Wt.
Class A
(in.)
(in.)
(lb.)
(lb.)
(oz./sq. ft.)
3/16
0.065
80
2,400
0.50
1/4
0.080
121
4,750
0.60
9/32
0.093
164
4,600
0.70
5/16
0.109
225
6,000
0.80
3/8
0.120
273
11,500
0.85
7/16
0.145
399
18,000
0.90
1/2
0.165
517
25,000
0.90
Supply new material. Remove drips, runs, sharp points, voids, and damage from the zinc coating. Samples from each roll of each diameter of strand will be taken. Replace strands failing
to meet the requirements of this item.
Strain Pole
Design
Strain Poles shall be per the latest version of TxDOT Standards for Traffic Signal Support Structures – Train Pole Assemblies (100 mph Design Speed).
Timber Pole
Use new treated southern pine timber poles in accordance with ANSI O5.1, Specifications and Dimensions for Wood Poles, and the additional requirements of this Item. Use ANSI Class 1,
50’ creosote poles for all wood signal poles unless otherwise shown on the plans.
Ensure poles are free from pith holes at the tops and butts. Do not use poles that have a trimmed scar with a depth greater than 2 in., if the diameter is 10 in. or less, or 1/5 the
pole diameter at the scar location, if the diameter is more than 10 in. Provide poles that do not deviate from straightness by more than 1 in. for each 10 ft. of length. A pole may
only have sweep in one plane and one direction (single sweep), provided a straight line joining the midpoint of the pole at the butt and the midpoint of the pole at the top does not
at any intermediate point pass through the external surface of the pole. Timber poles with more than one complete twist of spiral grain are not acceptable.
Butt slivering due to felling is permitted if the distance from the outside circumference is at least 1/4 of the butt diameter and the height is not more than 1 ft. Use preservative
treatment in accordance with AWPA U1, Commodity Specification D. Furnish poles with a minimum net retention of preservative treatment in accordance with Table 1.
Mark all poles by branding in accordance with Table 2.
Table 1
Retention of Preservative Treatment
Treatment
Minimum Retention
Creosote
9.0 lb./ft.3
Pentachlorophenol
0.45 lb./ft.3
CCA
0.6 lb./ft.3
Table 2
Timber Pole Markings
Marking
Description of Marking
PTC
Supplier’s code or trademark (for example, Pole Treating Company).
F-01
Plant location and year of treatment (for example, Forestville, 2001).
SPC
Species and preservative code (for example, southern pine, creosote).
5-35
Class-length (for example, Class 5, 35 ft. pole).
Place the bottom of the brand squarely on the face of the pole 10 ft. (plus or minus 2 in.) from the butt.
Furnish a treatment certification with every shipment of treated timber poles that includes:
Name of the treating company,
Location of treating plant,
Applicable product standard (AWPA U1),
Charge Number,
Date of treatment,
Contents of charge (poles),
Preservative treatment, and
Actual preservative retention values.
Foundations
All foundations shall be built in accordance with Item “Cast-in-Place Concrete” and the requirements stated in the Drawings.
Electrical Meter Pedestal
Electrical meter pedestals shall be as follows:
TxDOT TYD (120/240)070(NS)SS( E)PS(U) 12 circuit
Stainless Steel in color
Installed power service equipment shall meet the following requirements:
The contractor will be required to pay any power hook up costs not typically associated with those typically provided by standard Denton Municipal Electric fees to the City
ILSN Sign
The product bid shall be manufactured by the following manufacturers:
Southern Manufacturing
Thin LED Street Name Sign, 19”x72”, Double Sided
ILSN shall include block numbers and City logo, coordinate layout and design approval with Traffic Operations
Provide new materials that comply with the details shown on the plans and the requirements of this item.
Furnish and fabricate LED ILSN sign assemblies and associated mounting hardware from new materials that comply with this specification.
Do not begin work or purchase materials before the submittals are approved by the Engineer.
Ensure maximum weight of the sign does not exceed maximum capacity of ILSN support arms.
Mounting
Provide 2-per sign from Pelco
AB-0160-45
SE-0371-M2
SE-0611-M2
SE-4031-M2
SE-5048-SS
Controller Cabinet Assembly
The product bid shall be manufactured by the following manufacturers:
Henke Enterprises Inc.
Model #8P168T/Denton Special
The controller cabinet assembly shall include the following equipment:
Signal Controller – COBALT, TS2 Type 2, with data key receptacle
Signal Monitor – EDI MMU2-16LEip
EtherWan Hardened Managed Switch
EX73931-0VB, with (2)SFP/LC-20Km modules and power supply
Load switches
Conduit within 6” of foundation
Grounding rod
Cabinet Breakaway Foundation: A6001848X24TXDT (28”x47”x24”)
Luminaire Head
The product bid shall be manufactured by the following manufacturers:
Phillips RoadView
108W48LED4K-T-R3M, no photocell, Type 3 Distribution
CCTV
The product bid shall be manufactured by the following manufacturers:
Cohu
Rise 4260 IP
Wireless Radio System
The product bid shall be manufactured by the following manufacturers:
Encom
E-Lite 24/58 with integrated antenna
VIVDS
The product bid shall be manufactured by the following manufacturers:
Gridsmart
Dual camera, dual processor, with performance module
Cast-in-Place Concrete
Form-Facing Materials
Rough-Formed Finished Concrete
Plywood, lumber, metal or another approved material
Provide lumber dressed on at least 2 edges and 1 side for tight fit.
Chamfer Strips
Wood, metal, PVC or rubber strips
¾-inch x ¾-inch, minimum
Rustication Strips
Wood, metal, PVC or rubber strips
Kerfed for ease of form removal
Form-Release Agent
Commercially formulated form-release agent that will not bond with, stain or adversely affect concrete surfaces
Shall not impair subsequent treatments of concrete surfaces
For steel form-facing materials, formulate with rust inhibitor.
Form Ties
Factory-fabricated, removable or snap-off metal or glass-fiber-reinforced plastic form ties designed to resist lateral pressure of fresh concrete on forms and to prevent spalling of
concrete on removal.
Furnish units that will leave no corrodible metal closer than 1 inch to the plane of exposed concrete surface.
Furnish ties that, when removed, will leave holes no larger than 1 inch in diameter in concrete surface.
Furnish ties with integral water-barrier plates to walls indicated to receive dampproofing or waterproofing.
Steel Reinforcement
Reinforcing Bars
ASTM A615, Grade 60, deformed
Reinforcement Accessories
Smooth Dowel Bars
ASTM A615, Grade 60, steel bars (smooth)
Cut bars true to length with ends square and free of burrs.
Bar Supports
Bolsters, chairs, spacers and other devices for spacing, supporting and fastening reinforcing bars and welded wire reinforcement in place
Manufacture bar supports from steel wire, plastic or precast concrete according to CRSI's "Manual of Standard Practice," of greater compressive strength than concrete and as follows:
For concrete surfaces exposed to view where legs of wire bar supports contact forms, use CRSI Class 1 plastic-protected steel wire or CRSI Class 2 stainless-steel bar supports.
For slabs-on-grade, provide sand plates, horizontal runners or precast concrete blocks on bottom where base material will not support chair legs or where vapor barrier has been specified.
Embedded Metal Assemblies
Steel Shapes and Plates: ASTM A36
Headed Studs: Heads welded by full-fusion process, as furnished by TRW Nelson Stud Welding Division or approved equal
Expansion Anchors
Available Products
Wej-it Bolt, Wej-it Corporation, Tulsa, Oklahoma
Kwik Bolt II, Hilti Fastening Systems, Tulsa, Oklahoma
Trubolt, Ramset Fastening Systems, Paris, Kentucky
Adhesive Anchors and Dowels
Adhesive anchors shall consist of threaded rods anchored with an adhesive system into hardened concrete or grout-filled masonry.
The adhesive system shall use a 2-component adhesive mix and shall be injected with a static mixing nozzle following manufacturer’s instructions.
The embedment depth of the rod shall provide a minimum allowable bond strength that is equal to the allowable yield capacity of the rod, unless otherwise specified.
Available Products
Hilti HIT HY 150 Max
Simpson Acrylic-Tie
Powers Fasteners AC 100+ Gold
Threaded Rods: ASTM A193
Nuts: ASTM A563 hex carbon steel
Washers: ASTM F436 hardened carbon steel
Finish: Hot-dip zinc coating, ASTM A153, Class C
Inserts
Provide metal inserts required for anchorage of materials or equipment to concrete construction where not supplied by other trades:
In vertical concrete surfaces for transfer of direct shear loads only, provide adjustable wedge inserts of malleable cast iron complete with bolts, nuts and washers.
Provide ¾-inch bolt size, unless otherwise indicated.
In horizontal concrete surfaces and whenever inserts are subject to tension forces, provide threaded inserts of malleable cast iron furnished with full depth bolts.
Provide ¾-inch bolt size, unless otherwise indicated.
Concrete Materials
Cementitious Material
Use the following cementitious materials, of the same type, brand, and source, throughout Project:
Portland Cement
ASTM C150, Type I/II, gray
Supplement with the following:
Fly Ash
ASTM C618, Class C or F
Ground Granulated Blast-Furnace Slag
ASTM C989, Grade 100 or 120.
Silica Fume
ASTM C1240, amorphous silica
Normal-Weight Aggregates
ASTM C33, Class 3S coarse aggregate or better, graded
Provide aggregates from a single source.
Maximum Coarse-Aggregate Size
¾-inch nominal
Fine Aggregate
Free of materials with deleterious reactivity to alkali in cement
Water
ASTM C94 and potable
Admixtures
Air-Entraining Admixture
ASTM C260
Chemical Admixtures
Provide admixtures certified by manufacturer to be compatible with other admixtures and that will not contribute water-soluble chloride ions exceeding those permitted in hardened concrete.
Do not use calcium chloride or admixtures containing calcium chloride.
Water-Reducing Admixture
ASTM C494, Type A
Retarding Admixture
ASTM C494, Type B
Water-Reducing and Retarding Admixture
ASTM C494, Type D
High-Range, Water-Reducing Admixture
ASTM C494, Type F
High-Range, Water-Reducing and Retarding Admixture
ASTM C494, Type G
Plasticizing and Retarding Admixture
ASTM C1017, Type II
Waterstops
Self-Expanding Butyl Strip Waterstops
Manufactured rectangular or trapezoidal strip, butyl rubber with sodium bentonite or other hydrophilic polymers, for adhesive bonding to concrete, ¾-inch x 1-inch.
Available Products
Colloid Environmental Technologies Company; Volclay Waterstop-RX
Concrete Sealants Inc.; Conseal CS-231
Greenstreak; Swellstop
Henry Company, Sealants Division; Hydro-Flex
JP Specialties, Inc.; Earthshield Type 20
Progress Unlimited, Inc.; Superstop
TCMiraDRI; Mirastop
Curing Materials
Absorptive Cover
AASHTO M182, Class 2, burlap cloth made from jute or kenaf, weighing approximately 9 ounces/square yard when dry
Moisture-Retaining Cover
ASTM C171, polyethylene film or white burlap-polyethylene sheet
Water
Potable
Clear, Waterborne, Membrane-Forming Curing Compound
ASTM C309, Type 1, Class B, dissipating
Available Products
Anti-Hydro International, Inc.; AH Curing Compound #2 DR WB
Burke by Edoco; Aqua Resin Cure
ChemMasters; Safe-Cure Clear
Conspec Marketing & Manufacturing Co., Inc., a Dayton Superior Company; W.B. Resin Cure
Dayton Superior Corporation; Day Chem Rez Cure (J-11-W)
Euclid Chemical Company (The); Kurez DR VOX
Kaufman Products, Inc.; Thinfilm 420
Lambert Corporation; Aqua Kure-Clear
L&M Construction Chemicals, Inc.; L&M Cure R
Meadows, W. R., Inc.; 1100 Clear
Nox-Crete Products Group, Kinsman Corporation; Resin Cure E
Symons Corporation, a Dayton Superior Company; Resi-Chem Clear Cure
Tamms Industries, Inc.; Horncure WB 30
Unitex; Hydro Cure 309
US Mix Products Company; US Spec Maxcure Resin Clear
Vexcon Chemicals, Inc.; Certi-Vex Enviocure 100
Related Materials
Bonding Agent
ASTM C1059, Type II, non-redispersible, acrylic emulsion or styrene butadiene
Epoxy Bonding Adhesive
ASTM C881, 2-component epoxy resin, capable of humid curing and bonding to damp surfaces, of class suitable for application temperature and of grade to suit requirements, and as follows:
Types I and II, non-load bearing
IV and V, load bearing, for bonding
Hardened or freshly mixed concrete to hardened concrete
Reglets
Fabricate reglets of not less than 0.0217-inch thick, galvanized steel sheet
Temporarily fill or cover face opening of reglet to prevent intrusion of concrete or debris.
Sleeves and Blockouts
Formed with galvanized metal, galvanized pipe, polyvinyl chloride pipe, fiber tubes or wood
Nails, Spikes, Lag Bolts, Through Bolts, Anchorages
Sized as required
Shall be of strength and character to maintain formwork in place while placing concrete
Repair Materials
Repair Underlayment
Cement-based, polymer-modified, self-leveling product that can be applied in thicknesses of 1/8 inch or greater
Do not feather.
Cement Binder
ASTM C150, portland cement or hydraulic or blended hydraulic cement as defined in ASTM C219
Primer
Product of underlayment manufacturer recommended for substrate, conditions, and application
Aggregate
Well-graded, washed gravel, 1/8 to 1/4 inch or coarse sand as recommended by underlayment manufacturer
Compressive Strength
Not less than 4100 psi at 28 days when tested according to ASTM C109/C109M
Repair Overlayment
Cement-based, polymer-modified, self-leveling product that can be applied in thicknesses of 1/8 inch or greater
Do not feather.
Cement Binder
ASTM C150, portland cement or hydraulic or blended hydraulic cement as defined in ASTM C219
Primer
Product of topping manufacturer recommended for substrate, conditions, and application
Aggregate
Well-graded, washed gravel, 1/8 to 1/4 inch or coarse sand as recommended by topping manufacturer
Compressive Strength
Not less than 5000 psi at 28 days when tested according to ASTM C109
Concrete Mixtures, General
Prepare design mixtures for each type and strength of concrete, proportioned on the basis of laboratory trial mixture or field test data, or both, according to ACI 301.
Required average strength above specified strength
Based on a record of past performance
Determination of required average strength above specified strength shall be based on the standard deviation record of the results of at least 30 consecutive strength tests in accordance
with ACI 318, Chapter 5.3 by the larger amount defined by formulas 5-1 and 5-2.
Based on laboratory trial mixtures
Proportions shall be selected on the basis of laboratory trial batches prepared in accordance with ACI 318, Chapter 5.3.3.2 to produce an average strength greater than the specified
strength f'c by the amount defined in table 5.3.2.2.
Proportions of ingredients for concrete mixes shall be determined by an independent testing laboratory or qualified concrete supplier.
For each proposed mixture, at least 3 compressive test cylinders shall be made and tested for strength at the specified age.
Additional cylinders may be made for testing for information at earlier ages.
Cementitious Materials
Limit percentage, by weight, of cementitious materials other than portland cement in concrete as follows, unless specified otherwise:
Fly Ash: 25 percent
Combined Fly Ash and Pozzolan: 25 percent
Ground Granulated Blast-Furnace Slag: 50 percent
Combined Fly Ash or Pozzolan and Ground Granulated Blast-Furnace Slag: 50 percent
Portland cement minimum, with fly ash or pozzolan not exceeding 25 percent
Silica Fume: 10 percent
Combined Fly Ash, Pozzolans, and Silica Fume: 35 percent with fly ash or pozzolans not exceeding 25 percent and silica fume not exceeding 10 percent
Combined Fly Ash or Pozzolans, Ground Granulated Blast-Furnace Slag, and Silica Fume: 50 percent with fly ash or pozzolans not exceeding 25 percent and silica fume not exceeding 10
percent
Limit water-soluble, chloride-ion content in hardened concrete to:
0.30 percent by weight of cement if concrete will have no exposure to chlorides (typical)
0.15 percent by weight if concrete will be exposed to chlorides
1.0 percent by weight if concrete will have no exposure to chlorides and will be continually dry and protected.
Admixtures
Use admixtures according to manufacturer's written instructions.
Do not use admixtures which have not been incorporated and tested in accepted mixes.
Use water-reducing high-range water-reducing or plasticizing admixture in concrete, as required, for placement and workability.
Use water-reducing and retarding admixture when required by high temperatures, low humidity or other adverse placement conditions.
Use water-reducing admixture in pumped concrete, concrete for heavy-use industrial slabs and parking structure slabs, concrete required to be watertight, and concrete with a water-cementitious
materials ratio below 0.50.
Use corrosion-inhibiting admixture in concrete mixtures where indicated.
Concrete Mixtures
Refer to TxDOT “Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges” for:
Culverts
Headwalls
Wingwalls
Proportion normal-weight concrete mixture as follows:
Minimum Compressive Strength: 3,000 psi at 28 days
Maximum Water-Cementitious Materials Ratio: 0.50
Slump Limit: 5 inches or 8 inches for concrete with verified slump of 2 to 4 inches before adding high-range water-reducing admixture or plasticizing admixture, plus or minus 1 inch
Air Content: 6 percent, plus or minus 1.5 percent at point of delivery for 3/4-inch nominal maximum aggregate size
Fabricating Reinforcement
Fabricate steel reinforcement according to CRSI's "Manual of Standard Practice."
Fabrication of Embedded Metal Assemblies
Fabricate metal assemblies in the shop. Holes shall be made by drilling or punching. Holes shall not be made by or enlarged by burning. Welding shall be in accordance with AWS D1.1.
Metal assemblies exposed to earth, weather or moisture shall be hot dip galvanized. All other metal assemblies shall be either hot dip galvanized or painted with an epoxy paint. Repair
galvanizing after welding with a Cold Galvanizing compound installed in accordance with the manufacturer's instructions. Repair painted assemblies after welding with same type of paint.
Concrete Mixing
Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to ASTM C94, and furnish batch ticket information.
When air temperature is between 85 and 90 degrees Fahrenheit, reduce mixing and delivery time from 1-1/2 hours to 75 minutes; when air temperature is above 90 degrees Fahrenheit, reduce
mixing and delivery time to 60 minutes.
Project-Site Mixing: Measure, batch, and mix concrete materials and concrete according to ASTM C94/C94M. Mix concrete materials in appropriate drum-type batch machine mixer.
For mixer capacity of 1 cubic yard or smaller, continue mixing at least 1-1/2 minutes, but not more than 5 minutes after ingredients are in mixer, before any part of batch is released.
For mixer capacity larger than 1 cubic yard, increase mixing time by 15 seconds for each additional 1 cubic yard.
Provide batch ticket for each batch discharged and used in the Work, indicating Project identification name and number, date, mixture type, mixture time, quantity, and amount of water
added. Record approximate location of final deposit in structure.
SOURCE QUALITY CONTROL
Battery back-up system
The City reserves the right to do testing on BBU systems to ensure Quality Assurance on unit before installation and random sampling of units being provided to the City. BBU systems
that fail will be taken off the City’s Qualified Products List.
Each BBU shall be manufactured in accordance with a written manufacturer’s Quality Assurance program. The QA program shall include, as a minimum, specific design and production QA
procedures.
The manufacturer, or an independent testing lab hired by the manufacturer, shall perform qualification testing on BBU Systems offered to the City.
EXECUTION
EXAMINATION
Verification of Existing Conditions
The Engineer’s design plan(s) attempt to show existing facilities and their location, (which may include, but is not limited to):
Storm sewer facilities;
Water mains, fire hydrant leads, meter services and other like facilities;
Sanitary sewer mains, services and other like facilities;
Cables/wires;
Conduit;
Utility ground boxes, vaults and/or other at or below ground like structures;
Irrigation systems;
Petroleum pipelines;
Fiber optic or other telecommunication lines;
Other underground item(s) as may apply
Both publicly and privately owned utilities may exist adjacent to or within the work limits of the project. However, the existence of a facility may not be known and/or the location
of a facility may not be exactly shown.
The contractor shall contact 1-800-DIGTESS prior to any work being performed.
Coordination
Coordinate with City Inspector at least 48 hours prior to commencing on site for Exploratory Excavation of Existing Utilities.
Coordinate location of all other existing utilities within vicinity of excavation prior to commencing Exploratory Excavation.
Coordinate staking of Exploratory Excavations with City at least 1 week prior to commencement.
Sequencing
Exploratory Excavations shall be conducted prior to the construction of the entire project.
Scheduling
For critical utility locations, the City may choose to be present during excavation.
Alter schedule for Exploratory Excavation of Existing Utilities to accommodate City personnel.
The contractor shall make an investigation as to the location of existing facilities that may be in conflict with any construction/work required before any work is performed relative
to the Item’s installation, so as to determine the location of any existing facility. If a conflict(s) is found, the contractor shall contact the Engineer with applicable information
and the Engineer shall determine an appropriate solution and provide it to the City for approval prior to continuing work on said item. Specifically, the contractor shall probe within
and around the immediate area, for a depth of at least 1 foot below the existing ground surface of the proposed:
Foundation; and/or
Pole; and/or
An underground component of the system; and/or
Sidewalk; and/or
The like.
The contractor shall comply with all utility clearances, both above and below ground. Texas state law, Article 1436C Makes it unlawful for the installation or operation of equipment
or machines within the distance prescribed by the Owner’s of any overhead electrical line, and/or applicable Federal and/or State Agencies’ requirements unless danger against contact
with high voltage lines has been effectively guarded against pursuant to the provisions of the article. When construction operations require working near an overhead electrical line,
the contractor shall contact the owner/operator of the overhead electrical line to make arrangements and to take necessary safety precautions to ensure that all laws, electrical line
owner/operator requirements and standard industry safety practices are met.
Exploratory Excavation
Verify location of existing utility at location denoted on the Drawings, or as directed by the City.
Expose utility to spring line, as necessary.
Excavate and Backfill Trench for the Exploratory Excavation in accordance with NCTCOG’s Standard Specification for Public Works Construction Item #504 Open Cut – Backfill.
Vacuum Excavation
Verify location of existing utility at location denoted on the Drawings, or as directed by the City.
Designate the horizontal position of the existing underground utilities that are to be located using geophysical prospecting equipment.
Acquire record documentation from and coordinate with utility companies, as necessary to locate utility.
Perform excavation in general accordance with the recommended practices and procedures described in ASCE Publication CI/ASCE 38.
Upon completion of the utility locating, submit a report of the findings.
Place embedment and backfill in accordance with NCTCOG’s Standard Specification for Public Works Construction Item #504 Open Cut – Backfill.
Once necessary data is obtained, immediately restore surface to existing conditions to:
Obtain a safe and proper driving surface, if applicable
Ensure the safety of the general public
The satisfaction of the City
No additional payment will be made for the relocation of any item(s) due to a facility conflict.
The contractor shall hold the City of Denton and the Engineer harmless from any suits or claims resulting from the damage by the contractor’s operations to any underground installation.
PREPARATION
Pre-construction gathering
Pre-construction gathering: the term as used herein shall be any assembly held between the City and the contractor, prior to commencing work on the project.
The contractor shall set up and coordinate at least one pre-construction gathering with the City.
The contractor shall contact the City such that the agreed upon pre-construction gathering date and time is established a minimum of five (5) City working weekdays after contacting the
City. Said pre-construction gathering shall be held a minimum of five (5) City working weekdays prior to beginning any work by the contractor.
Depending on the results of a pre-construction gathering, the City may require additional pre-construction gathering(s).
As many pre-construction gatherings will be held as necessary, as determined by the City, prior to the City allowing any work to commence.
Each pre-construction gathering shall be held with the City and contractor’s representative(s) in attendance at a location agreed upon by each.
The contractor shall take applicable notes of any pre construction gathering held and, prior to beginning any work, provide them in legible writing to the City. The contractor shall
not begin any work until the minutes of every pre-construction gathering are submitted to and agreed upon by the City.
At the first pre-construction gathering, the contractor shall provide the name and appropriate phone number(s) (preferably both land line and cell) of the qualified technician assigned
to the project and any other designated person as may apply and be applicable. The telephone number(s) of the said personnel shall be local and not subject to frequency changes. All
phone numbers provided shall have a voice-mail messaging service. Any change in this information shall be provided to the City within 12 hours.
Contractor shall not provide any phone number of any City staff that is related to the project to anyone unless specifically allowed and noted in writing by the City.
Contractor supplied qualified technician and construction personnel
Qualified technician:
The term as used herein shall be a person with sufficient work experience and knowledge about the system(s) required of this project by reference, for its proper completion and acceptable
to the City.
Shall be able to understand and speak conversational English sufficient to take instruction(s) from City staff so as to begin and correctly complete the work to be performed and without
further supervision by the City of the need for additional written or spoken guidance by the City.
Shall be able to understand and speak technical (as it relates to the traffic signal system), English sufficient to take instructions from City staff so as to begin and correctly complete
the work to be performed for the traffic signal system being constructed and without further supervision by the City or the need for additional written or spoken guidance by the City.
Shall be able to cause the complete resolution of any issue, that is determined as being not acceptable to the City and/or the Engineer, which may affect the proper completion of the
work, in its entirety.
The qualified technician’s resolution to an issue shall be such that the solution can be completed using acceptable practices and/or methods of the industry and/or the manufacturer of
the product.
Said solution shall be approved by the Engineer (if it is a design issue) as well the City (irrespective of the type of situation) and prior to any required work being done.
The completion of the solution shall be done by the contractor in a reasonable amount of time, as determined by the City, as it relates to the severity of the danger to the public, as
determined by the City.
Any solution’s associated costs shall be at the contractor’s expense.
Work crew: the term as used herein shall be all contractor supplied personnel working at the site, other than the qualified technician, with sufficient work experience and/or knowledge
about some of the components of the system(s) required of this project.
The contractor shall provide a qualified technician and work crew with appropriate equipment and material(s) so as to complete the work required of the system, in its entirety and to
the satisfaction of the City.
The qualified technician shall have complete supervisory control over the work crew.
The qualified technician shall be present on the job as needed, from the time when: the contractor occupies the site (in any manner) until the warranty acceptance of the work by the
City. If not present on the job site, the qualified technician shall be available to be on the site within a time not to exceed 2 hours, on any given day during any given hour because
of an unsatisfactory condition that is sufficient to cause the public to be in an unreasonable and/or potentially dangerous situation (as determined by the City) upon being noticed
of the condition by a member of the work crew and/or the City. The qualified technician shall remain on site until the condition is resolved to the City’s satisfaction. When the qualified
technician is not on site then a least one of the work crew that is on site shall have the same requirements of the qualified technician.
When the work is sufficiently complete for a review by the City for each noted stage of completion, the qualified technician shall:
Contact the City a minimum of two (2) City working weekdays to make arrangements for and to coordinate an onsite gathering(s) for the City to review the work performed, as well as the
system, up to that point in time;
Assure said gathering(s) shall be on a City working weekday;
Be in attendance at each noted gathering and/or as requested by the City;
Not leave the site during a gathering until dismissed by the City;
During the review, the qualified technician shall take detailed notes of the items to be corrected and shall provide a typical, written punch-list to the City of all said items.
Protection of In-Place Conditions
The Contractor shall assume full responsibility for the preservation of existing landscaping (sod, shrubbery, trees, and etc.), sprinkler systems, and/or other private property at the
Site during the installation of the traffic signal. Damaged landscaping, sprinkler systems, and/or other private property shall be replaced within a reasonable time, by the Contractor
at his own expense, to the satisfaction of the Inspector.
No trees or shrubbery shall be cut except upon the specific authority of the Inspector.
Removal of mail boxes in the way of construction requires 48 hours advance notice to the post office.
INSTALLATION
Special Techniques
LED Vehicle and Pedestrian Signal Head Assemblies
Assembly
Assemble individual signal sections in multi-section faces in accordance with the manufacturer’s recommendations to form a rigid signal face.
Assemble and mount signal heads as shown on the plans.
Close any openings in an assembled signal head with a plug of the same material and color as the head.
Install back plates in accordance with the manufacturer’s recommendations.
Final placement and use shall be determined in the field by the City during installation.
Wiring
The IMSA multi-conductor signal cable shown in the plans shall be terminated at the appropriate connector at the terminal strip located in the mast arm vertical pole
Conductors to the signal head from the terminal strip shall be IMSA Multi-conductor signal cable.
Wire each optical unit to the terminal block located in that signal section by means of solderless wire connectors or binding screws and spade lugs.
Wire all sections of a multi-section signal face to the section terminal blocks in which the traffic signal cable is terminated.
Maintain the color coding on leads from the individual optical units throughout the signal head, except for the traffic signal cable.
Use solderless wire connectors or binding screws and spade lugs for connections to terminal blocks. Use binding screws and spade lugs for field wiring.
Wiring holes are to be drilled by the Contractor in the field, upon determination by the City, at the appropriate location for the item it is intended to serve.
For signal heads, provide a 1¼ inch hole with rubber grommet on the front side of the mast arm for the astro-bracket. Signal head wires are to run through the astro-bracket. No exposed
cable or wiring will be permitted.
Unless indicated otherwise, the contractor shall provide necessary mounting hardware to insure the proper mounting of all signal heads.
All mast arm mounted vehicle signal heads shall have provisions for adjustment about the horizontal axis.
Signal and pedestrian heads shall be securely tightened immediately after signal head assembly has been installed.
If any signal head assembly is found to be loose or asymmetrical in any manner, the Contractor shall be required to remove and rebuild the signal head assembly to the satisfaction of
the Inspector.
The Contractor shall mount signal heads level with the horizon and plumb.
The Contractor shall position and secure the signal heads so they are visible as stipulated, in the most current edition of the Texas MUTCD.
All signal heads are to be centered on applicable vehicle travel lane.
All connection screws shall be tight and snug.
All signal heads or parts of heads not in operation shall be covered with burlap or fabric material until placed into operation.
When the signal heads become operational, all existing heads no longer required shall be removed immediately.
No exposed cable or wiring will be permitted.
LED Countdown Pedestrian Signal Head Assemblies
Assembly
Assemble pedestrian signal heads in accordance with the manufacturer’s recommendations.
Assemble and mount signal heads as shown on the plans.
Close any openings in an assembled signal head with a plug of the same material and color as the head.
Wiring
The IMSA multi-conductor signal cable shown in the plans shall be terminated at the appropriate connector at the terminal strip located in the mast arm vertical pole
Conductors to the pedestrian signal head from the terminal strip shall be IMSA Multi-conductor signal cable.
Wire each optical unit to the terminal block located in that pedestrian signal section by means of solderless wire connectors or binding screws and spade lugs.
Wire the pedestrian signal head to the section terminal blocks in which the traffic signal cable is terminated.
Maintain the color coding on leads from the individual optical units throughout the pedestrian signal head, except for the traffic signal cable.
Use solderless wire connectors or binding screws and spade lugs for connections to terminal blocks. Use binding screws and spade lugs for field wiring.
Wiring holes are to be drilled by the Contractor in the field, upon determination by the City, at the appropriate location for the item it is intended to serve.
Unless indicated otherwise, the contractor shall provide necessary mounting hardware to insure the proper mounting of all pedestrian signal heads.
Pedestrian heads shall be securely tightened immediately after pedestrian head assembly has been installed.
If any pedestrian head assembly is found to be loose or asymmetrical in any manner, the Contractor shall be required to remove and rebuild the pedestrian head assembly to the satisfaction
of the Inspector.
The Contractor shall mount pedestrian heads level with the horizon and plumb.
The Contractor shall position and secure the pedesrian heads so they are visible as stipulated, in the most current edition of the Texas MUTCD.
All connection screws shall be tight and snug.
All pedestrian heads or parts of heads not in operation shall be covered with burlap or fabric material until placed into operation.
When the pedestrian heads become operational, all existing heads no longer required shall be removed immediately.
Pedestrian head assemblies installed such that the wiring to each head shall pass from the mast arm through the signal head bracing or attachment hardware to the pedestrian head.
No exposed cable or wiring will be permitted.
Pedestrian Push Button Assemblies
Meet the requirements of the Texas MUTCD when installing push-buttons.
Wire the push-button according to manufacturer’s installation instructions.
Close unused housing openings with a weather-tight closure painted to match the housing.
Verify that each button is communicating and fully functional.
Do not use terminal connections or splice wire leads except at approved locations.
Attach wires to terminal posts with solderless terminals unless otherwise advised by manufacturer’s recommendations.
Attach terminals to the wires with a ratchet-type compression crimping tool properly sized to the wire.
Ensure pushbutton stations are mounted at the proper height and orientation.
Pedestrian push buttons shall be mounted at a height above the sidewalk (or ground), be level, in accordance with the applicable items in the City Standards, and installed with an appropriate
sign based upon the push button’s manufacturer and per the latest version of the Texas MUTCD and as approved by the City. The sign shall be modified to include an arrow indicating the
desired crossing direction. All pedestrian push buttons shall meet all requirements of the Americas with Disabilities Act and/or the Public Right-of-Way Accessibility guidelines (PROWAG),
latest version.
Accessible Pedestrian Push Button Station Assembly
If a controller unit is required by the plans, integrate the pedestrian controller unit into the traffic signal controller cabinet assembly.
Unless specified otherwise, wire the APS to the nearest terminal strip using stranded No. 12 AWG XHHW wire with 600-volt insulation.
Do not use terminal connections or splice wire leads except in the hand holes located in the signal pole shaft, in the signal pole base, or at locations approved by the City.
Attach wires to terminal posts with solderless terminals.
Attach terminals to the wires with a ratchet-type compression crimping tool properly sized to the wire.
Remove any burrs or rough edges on any holes drilled for wire entry to APS pushbuttons.
Ensure pushbutton stations are mounted at the proper height and orientation.
Pedestrian push buttons shall be mounted at a height above the sidewalk (or ground), be level, in accordance with the applicable items in the City Standards, and installed with an appropriate
sign based upon the push button’s manufacturer and per the latest version of the Texas MUTCD and as approved by the City. The sign shall be modified to include an arrow indicating the
desired crossing direction. All pedestrian push buttons shall meet all requirements of the Americas with Disabilities Act and/or the Public Right-of-Way Accessibility guidelines (PROWAG),
latest version.
Provide a neat workmanship in the installation of any wiring harnesses, control units, wiring panels, push button stations.
Follow manufacturer’s recommendations regarding installation and weatherproofing.
Documentation
Each APS shall be provided with the following documentation:
Complete and accurate installation wiring guide.
Contact name, address, and telephone number for the representative, manufacturer, or distributor for warranty repair.
If requested supply schematics for all electronics. One schematic diagram shall be provided for pushbutton stations, panels, central control units or control units, along with any necessary
installation instructions.
Radar Detection Equipment and Cable
Installation
Radar detectors shall be mounted at a location to be determined in the field by the City
Install 1 ¼ inch hole with rubber grommet on the backside of mast arms for Astro-bracket. Wire and cables are to run through the Astro-bracket.
Hole locations are to be marked by the Contractor and approved by the City prior to drilling.
Wiring
Presence Radar Detection
Install a 1¼ inch hole with rubber grommet on the backside of the mast arm for the Astro-bracket. Radar wire cable is to run through the Astro-bracket or as directed by the City.
Forward Dire Radar Detection
Typically installed on the luminaire truss
If mast arm mounting is approved by the City, install a 1¼ inch hole with rubber grommet on the backside of the mast arm for the Astro-bracket. Radar wire cable is to run through the
Astro-bracket or as directed by the City.
Contractor to provide a minimum of 2 feet for drip loops for radar detection wiring.
Configuration
Auto-Configuration
The radar detector shall have a method for automatically defining traffic lanes, stop bars and zones without requiring user intervention. This auto-configuration process shall execute
on a processor internal to the radar detector and shall not require an external PC or other processor.
The auto-configuration process shall work under normal intersection operation and traffic conditions and may require up to ten vehicles to pass through each lane to complete.
Manual Configuration
The auto-configuration method shall not prohibit the ability of the user to manually adjust the radar detector configuration.
The radar detector shall support the configuring of lanes, stop bars and detection zones in 1-ft. (0.3-m) increments.
Windows Mobile™ - Based Software
The radar detector shall include graphical user interface software that displays all configured lanes and the current traffic pattern using a graphical traffic representation.
The graphical interface shall operate on Windows Mobile, Windows XP and Windows Vista in the .NET framework.
The software shall support the following functionality:
Operate over a TCP/IP connection
Give the operator the ability to save/back up the radar detector configuration to a file or load/restore the radar detector configuration from a file
Allow the backed-up sensor configurations to be viewed and edited
Provide zone and channel actuation display
Provide a virtual connection option so that the software can be used without connecting to an actual sensor
Local or remote sensor firmware upgradability
Testing
FCC
Each radar detector shall be Federal Communications Commission (FCC) certified under CFR 47, Part 15, section 15.249 as an intentional radiator.
The FCC certification shall be displayed on an external label on each radar detector according to the rules set forth by the FCC.
The radar detector shall comply with FCC regulations under all specified operating conditions and over the expected life of the detector.
NEMA TS2-2003 Testing
The radar detector shall comply with the applicable standards stated in the NEMA TS2-2003 Standard. Third party test results shall be made available for each of the following tests:
Shock pulses of 10g, 10 ms half sine wave
Vibration of 0.5 Grms up to 30 Hz
300 V positive/negative pulses applied at one pulse per second at minimum and maximum DC supply voltage
Cold temperature storage at -49°F (-45°C) for 24 hours
High temperature storage at 185°F (85°C) for 24 hours
Low temp, low DC supply voltage at -29.2°F (-34°C) and 10.8 VDC
Low temp, high DC supply voltage at -29.2°F (-34°C) and 26.5 VDC
High temp, high DC supply voltage at 165.2°F (74°C) and 26.5 VDC
High temp, low DC supply voltage at 165.2°F (74°C) and 10.8 VDC
Support
The radar detector manufacturer shall provide both training and technical support services.
Documentation
Radar detector documentation shall include an instructional training guide and a comprehensive user guide as well as an installer quick-reference guide and a user quick-reference guide.
The radar detector manufacturer shall supply the following documentation and test results at the time of the bid submittal:
FCC CFR 47 certification (frequency compliance)
IED 6100-4-5 class 4 test report (surge)
Emergency Vehicle Preemption Equipment and Cable
Emergency vehicle preemption system equipment required in the Drawings will be furnished and installed by the Contractor.
Where practical, emergency vehicle preemption receiver units shall be mounted to a rigid metal arm and banded to the mast arm pole upright on the intersection corner designated on the
Drawings.
The Inspector shall determine if the roadway sight line permits this type of emergency vehicle preemption installation.
The emergency vehicle preemption receiver units shall be mounted on the mast arms for the intersection approaches as designated on the Drawings.
Use stainless steel for all external screws, nuts, and locking washers; do not use any self-tapping screws unless approved by the Engineer or City.
All equipment shall be installed and wired in a neat and orderly manner in conformance with the manufacturers’ instructions.
Emergency Preemption Detector Cables shall be installed continuous with no splices between the Emergency Preemption Detector and the cabinet.
Contractor shall provide a minimum of 2 feet for drip loops at connections.
All connections from the Emergency Preemption Phase Selector to the cabinet wiring shall be made at the termination panel. The termination panel shall have AC+ Lights, AC-, and a switched
logic ground. The switched logic ground feeds all the pre-empt inputs to the Emergency Preemption Phase Selector. When switched off by the pre-emption disconnect switch, the traffic
controller shall not be affected by pre-empt calls from the optical pre-emption system. A minimum of two test buttons shall be provided. If there are more than two pre-empt runs, a
button for each shall be installed. A chart or print out, indicating the program steps and settings shall be provided along with the revised cabinet wiring diagrams.
Battery Back-up (BBU) System for Signal Cabinets
Mount the BBU system as shown in the plans.
Tray Cable
Perform work in accordance with the details shown on the plans and the requirements of this Item.
Provide an additional 5 ft. of cable coiled in each ground box when installing cable in underground conduit. Splice tray cable conductors only at locations shown on the plans.
Obtain the Engineer’s written approval for each splice. Ensure allowed splices are watertight.
Test the cable’s conductors after installation and before any connection. Remove and replace tray cable exhibiting a DC insulation resistance of less than 5 megohms at 1,000 volts DC
at no additional cost to the Department.
Multi-Conductor Cable
Cables shall be installed in conduit unless indicated as an "overhead" cable run.
All conduits must be in accordance with the Item Conduit.
Conduit must be continuous, reasonably dry, completely free of debris, and without sharp projections, edges, or short bends.
If required by the Inspector, the Contractor shall demonstrate that the conduit is dry and free of debris by pulling a swab and/or mandrel through the conduit. The conductors shall
be installed in a manner so as to ensure against harmful stretching of the conductors or damage to the insulation.
Installation methods shall conform to the recommendations of the cable manufacturer.
The Contractor shall furnish, at the request of the Traffic Management Manager or designee a copy of the manufacturer's recommendations, which shall include methods of attaching pull
cable, pulling tension per conductor size and per radius of conduit bend, and the type of lubricant to be used.
All cables in a given conduit run shall be pulled at the same time and the conductors shall be assembled to form 1 loop in such a manner that the pulling tension is equally distributed
to all the cables.
Long, hard pulls will necessitate the use of pulling eyes.
For short runs, the cables may be gripped directly by the conductors by forming them into a loop to which the pull wire or rope can be attached.
The insulation on each conductor shall be removed before the loop is formed.
The method used will depend on the anticipated maximum pulling tension in each case.
In existing conduit where new cables are to replace existing cables, the existing cables may be used to pull in the new cables.
At locations where new cables are to be added to existing cable runs, the existing cables shall first be pulled out, the new cables are to be added to the existing cables to form 1 cable
pull (no slipping if any wires).
Installation and removal shall be done in such a way as to prevent damage to the existing and/or new cables.
In the event of damage, the Contractor shall bear the responsibility of providing the material and labor for replacement of defective cables at no extra cost to the City.
All conduit runs shall be measured accurately and precisely for determining cable lengths to be installed.
A conduit run measurements shall take place in the presence of the Inspector.
The Inspector shall record all cable measurements and include the distances on an as-built drawing.
In locations where new cables are to replace existing cables, the Contractor may use the removed cables as a measuring device to determine the lengths of the new cables to be installed.
However, this does not relieve the Contractor of his responsibility to record accurate measurements of all cable lengths.
The manufacturer's recommended maximum pulling tensions shall not be exceeded under any circumstances.
If so required by the Inspector, the Contractor shall insert a dynamometer in the pull wire as the cables are being pulled into the conduit to demonstrate that the maximum tensions are
not being exceeded.
The cable shall be fed freely off the reel into the conduit without making a reverse curve.
At the pulling end, the pull wire and cables shall be drawn from the conduit in direct line with the conduit.
Sheaves or other suitable devices shall be used as required to reduce any hazards to the cable during installation.
The cables shall be adequately lubricated to reduce friction and further minimize possible damage.
Such lubricants shall not be the grease or oil type used on lead sheathed cables, but shall be 1 of several commercially available wire pulling compounds that are suitable for PVC sheathed
cables.
They shall consist of soap, talc, mica, or similar materials and shall be designed to have no deleterious effect on the cables being used.
Cables shall be neatly trained to their destinations.
The Contractor shall adhere to the cable manufacturer's recommended values for the minimum bending radii to which cables may be bent for permanent training during installation.
These limits do not apply to conduit bends, sheaves, or other curved surfaces around which these cables may be pulled under tension while being installed.
Larger radius bends are required for such conditions.
Wire and Cable
All wire and cable shall conform to the requirements shown in the Drawings, except wire and cable specifically covered by other Items of this Contract.
Controller Cabinet Wiring
Wiring for the controller cabinet shall consist of connecting (1) signal wires, (2) vehicle detection wires, (3) power wires, (4) ground wires, and (5) pedestrian push button wires to
their respective terminals in the cabinet.
In the controller cabinet, stranded signal conductors from the field shall be stripped back and a solderless terminal connector (spade lug) shall be attached by means of a crimping tool.
These terminal Connectors shall be inserted under the binder head screw and tightened securely.
Other wiring for the controller shall be completed as shown on the wiring diagrams and in the instructions furnished with the controller by the manufacturer.
All field wiring in cabinets shall be neatly installed. Incoming cables shall be trained to their destination and neatly laced together.
All spare wires shall be trimmed and neatly coiled with the ends taped.
Detector lead-in cables shall have their insulation jackets removed from their terminal strip connection to the bottom of the cabinet.
Pedestrian push buttons shall have a ground wire that is completely isolated and independent from all other ground wires.
This wire shall be connected to the designated terminal in the controller cabinet.
A pedestrian isolation board shall be in place.
Individual conductors between the controller and signal pole base shall be #14 AWG.
Signal Head Wiring
No splicing of cable shall be allowed.
Each cable shall be identified as referenced on the pole wiring detail sheet provided in the Drawings with permanent marking labels (Panduit type PLM standard single marker tie, Thomas
and Betts type 548M or equivalent) at each ground box, pole base and controller.
Traffic signal cable within the signal poles and arms shall be #14 AWG.
Additional lengths of each wire are required.
The wire that passes through or terminates in:
A ground box – Minimum 6 feet
The Cabinet – Minimum 15 feet, and/or
A streel mast arm vertical pole – Minimum 6 feet
For Span wire assemblies
At each pole – 15 feet
At each signal head – 6 feet
Depending on local conditions, other lengths of wire not listed herein may be required and will be determined on site by the City.
No splicing will be allowed for any type of wiring, expect those types and at those locations acceptable to the City.
Exceptions are where manufacture’s supplied cable/wire requires continuation for connection to applicable terminus. All splicing techniques shall be in accordance with manufacture’s
recommendations/requirements and approved in writing by the City prior to beginning work.
Wiring hole locations are to be marked by the Contractor and approved by the City prior to drilling for the item it is intended to serve.
All conductors shall be in compliance with NEW loading standards/requirements.
Terminals
The ends of all stranded wires from the controller cabinet and from the signal heads shall be twisted at least 3 turns and wire nut applied in the base of the signal structure.
Identification of Signal Wires and Cables
IMSA color coded signal cable shall be used for all signal systems.
Colors shall be continuous from the point of origin to the point of termination.
Each signal cable, detector lead-in cable and communication cable shall be designated with permanent marking labels or (Panduit type PLM, Thomas and Betta type 548M standard single marker
type or equivalent) and color coded tape at each pull box and in the controller cabinet.
Power Lead-in Cable
Perform work in accordance with the details shown on the plans.
Ground Conductors
Perform work in accordance with the details shown on the plans.
Ground Rod
Properly install and connect a ground rod for each controller cabinet, power drop and signal pole pier to reduce any extraneous voltage to a safe level.
The ground rod shall be located so as to minimize the length of the grounding-conductor run.
For pole mounted cabinets a grounding rod and grounding conductor shall be installed at the nearest foundation or ground box.
All grounding circuits shall be substantial and permanent and shall be electrically continuous with an ohms-to-ground resistance not to exceed 10 ohms when tested by volt-ohm-meter.
UFER grounding shall be used for illumination poles.
Grounding Connectors and Electrodes
When the location precludes driving a single ground rod to a depth of 8 feet (2.4 m), or when a multiple ground rod matrix is used to obtain the required resistance to ground, ground
rods shall be spaced at least 6 feet apart and bonded by a minimum No. 6 AWG copper wire.
Connection of grounding circuits to grounding electrodes shall be by devices which will ensure a positive, fail-safe grip between the conductor and the electrode (such as lugs or pressure
connectors).
No splice joint will be permitted in the grounding conductor.
Each grounding rod shall be driven into the ground to a depth sufficient to provide the required resistance (10 ohms) between electrodes and ground.
Ground Boxes
Use established industry and utility safety practices when installing or removing ground boxes located near underground utilities. Consult with the appropriate utility company before
beginning work.
Fabricate and install ground boxes in accordance with the details, dimensions, and requirements shown on the plans. Install ground box to approved line and grade.
Utilize precast concrete ground boxes in accordance with these specifications.
Construct concrete aprons as shown on the plans an in accordance with Item “Cast-in-place Concrete”.
A minimum gravel fill of 9 inches shall be placed under each ground box and a concrete skirt installed around each ground box as specified on the plans.
Lube bolts, clean out cover rim, and clean ground box inside and out prior to final inspection.
Removal
Remove existing ground boxes and concrete aprons to at least 6 in. below the conduit level. Uncover conduit to a sufficient distance so that 90 degree bends can be removed and conduit
reconnected. Clean the conduit in accordance with specification for Conduit. Replace conduit within 5 ft. of the ground box. Remove old conductors and install new conductors as shown
on the plans. Backfill area with material equal in composition and density to the surrounding area. Replace surfacing material with similar material to an equivalent condition.
Conduit
Perform work in accordance with the details shown on the plans and the requirements of this Item.
Use established industry and utility safety practices when installing conduit located near underground utilities. Consult with the appropriate utility company before beginning work.
Install conduit a minimum of 24 in. deep below finished grade unless otherwise shown on the plans. Meet the requirements of the NEC when installing conduit. Secure and support conduit
placed for concrete encasement in such a manner that the alignment will not be disturbed during placement of the concrete. Cap ends of conduit and close box openings before concrete
is placed.
Ream conduit to remove burrs and sharp edges. Use a standard conduit cutting die with a 3/4 in. taper per foot when conduit is threaded in the field. Fasten conduit placed on structures
with conduit straps or hangers as shown on the plans or as directed. Fasten conduit within 3 ft. of each box or fitting and at other locations shown on the plans or as directed. Use
metal conduit clamps that are galvanized malleable or stainless steel unless otherwise shown on the plans. Use 2 hole type clamps for 2 in. diameter or larger conduit.
Fit PVC and HDPE conduit terminations with bushings or bell ends. Fit metal conduit terminations with a grounding type bushing, except conduit used for duct cable casing that does not
terminate in a ground box and is not exposed at any point. Conduit terminating in threaded bossed fittings does not need a bushing. Before installation of conductors or final acceptance,
pull a properly sized mandrel or piston through the conduit to ensure that it is free from obstruction. Cap or plug empty conduit placed for future use.
Perform trench excavation and backfilling as shown on the plans or as directed, and in accordance with NCTCOG’s Standard Specification for Public Works Construction Item #504 Open Cut
– Backfill. Excavation and backfilling will be subsidiary to the installation of the conduit.
Conduit shall be placed under existing pavement by an approved jacking method unless otherwise directed by the Engineer. Pits for jacking shall not be closer than 2 feet from the edge
of the pavement unless otherwise directed by the Engineer.
When boring is used for under pavement conduit installations, maximum allowable over cut shall be 1 inch diameter.
When conduits are installed by non-trenching method, the vertical and horizonal tolerances shall not exceed 18 inches as measured form the intended target point.
The use of a saw cut trench for the installation of conduit under existing pavement shall only be made at a location approved by the Engineer and City and only a location where conduit
cannot be jacked or bored. A saw cut trench detail for installation of conduit under existing pavement, approved by the City, shall be backfilled to a condition acceptable to the Engineer
and City.
Water jetting will not be permitted.
The use of a pneumatically driven vehicle for punching holes beneath existing pavement (commonly known as “missile”) will not be permitted.
All rigid metal extensions and/or elbows shall be approved by the City prior to installation.
All conduit elbows and rigid metal pipe (such as a riser) required to be installed on PVC conduit systems will not be paid for separately, but will be considered subsidiary to various
bid items.
All couplings and connections shall be tight and waterproof and connected with a City approved PVC glue unless a threaded connection.
All conduit shall be installed with a bell end.
The contractor shall place duct seal at the end of all conduit with the exception of the mast arm vertical pole’s foundation(s), or as directed by the City and in such a manner as to
be acceptable to the City.
The minimum bend radios on conduit shall be as follows:
4 inch conduit – 24 inches;
3 inch conduit – 18 inches;
2 inches and smaller – 12 inches.
Use red 3-in 4-mil polyethylene underground warning tap that continuously states “Caution Buried Electrical Line Below”. Place warning tape approximately 10 in. above trenched conduit.
Where existing surfacing is removed for placing conduit, repair by backfilling with material equal in composition and density to the surrounding areas and by replacing any removed surfacing,
such as asphalt pavement or concrete riprap, with like material to equivalent condition. Mark conduit locations as directed.
Traffic Signal Structures
The Contractor shall install all traffic signal structures in accordance with the Drawings.
Deviation from the Drawings because of physical obstructions, such as overhead utilities or in appropriate mast arm length to fit a relocated foundation, shall be worked out with the
Inspector and approved prior to installation.
Stake the traffic signal pole locations for verification by the City.
Poles shall have nuts on top and bottom of the pole base plate.
Anchor bolts for mast arm signal poles shall be set so that 2 are in tension and 2 are in compression.
The exposed length of the anchor bolt between the top of the foundation and the bottom of the leveling nut should not exceed one bolt diameter.
Mast arm vertical pole’s foundation bolts are to be placed such that the exposed portion is not to extend more than 9 ± ½ inches above the top of the signal foundation and shall be of
equal height. Threaded portion shall extend ¼ inch to ½ inch above concrete.
Base plate leveling nuts shall be such that the bottom of the nuts are ¾ inch ± ¼ inch average above the top of the signal foundation.
The traffic signal pole heights and mast arm lengths shown on the Drawings and in the material summary are to be used for bidding purposes only.
Mast Arm Vertical Clearance and Orientation
Prior to fabrication, the Contractor, in cooperation with the Inspector, shall make field measurements to determine the actual pole height necessary to ensure a vertical clearance of
17 feet minimum and 19 feet maximum from the roadway surface to the bottom of the lowest point on the signal head assembly or mast arm and to determine the mast arm lengths required
to mount the traffic signal heads over the traffic lanes.
The masts arms shall be straight and level in the area where the signal heads are attached.
Mast arms shall be installed 90 degrees to the flow of traffic for the corresponding street.
These field measurements and evaluations shall be determined from the actual field location of the pole foundations, considering all above and below ground utilities and the existing
roadway elevations and lane widths.
The contractor shall take actual field measurement(s), at the completion of construction (and provide said information to the City prior to construction approval), to determine the actual
height of each head, to insure they meet the City’s minimum vertical clearances.
All poles for the project shall have a base cover.
An open end at the end of a pole shall be mechanically capped by a City approved method.
All appurtenance’s end of pole caps and/or hand hole covers shall be installed within 24 hours of installation of applicable appurtenance.
Transformer bases for pedestal poles shall be leveled and tightly secured to the foundation before the structure is placed on the base.
If shims are required for leveling, total shim height shall not exceed 1/2 inches.
Foundation anchor bolts shall extend a minimum of 1 inch through each nut in the base.
Except as modified herein, erection of traffic signal structures shall be in accordance with the applicable Specifications and standards of the AISC Manual of Steel Construction.
Erecting equipment shall be suitable for the Work and shall be in proper working condition.
Where parts cannot be assembled or fitted properly as a result of errors in fabrication or deformation due to handling or transportation shall be reported immediately to the Inspector.
Straightening of plates and angles or other shapes shall be done by approval of the manufacturer.
No corrections will be allowed that will void the manufacturer's warranty.
A letter from the manufacturer approving the corrections shall be required or the material may be rejected by the Inspector.
Use established industry and utility safety practices when working near underground or overhead utilities. Consult with the appropriate utility company before beginning such work.
No pole shall be placed on a foundation prior to ten (10) days following placement of concrete. Erect structures after foundation concrete has attained its design strength.
The steel structure frame shall be lifted as shown in the manufacturer's specifications and all match marking shall be followed.
Temporary bracing shall be used wherever necessary to support all loads to which the structure may be subjected, including equipment, operation, and material loading.
Such bracing shall be left in place as long as may be required for safety.
The various members, after being assembled, shall be aligned and adjusted accurately before being fastened.
Fastening of splices on compression members shall be done after the abutting surfaces have been brought completely into contact.
No welding or bolting shall be done until the structures have been properly aligned.
Bearing surfaces and surfaces which will be in permanent contact with each other shall be cleaned before the members are assembled.
Bearing plates shall be set in exact position and shall have a full and even bearing upon the concrete.
As erection progresses, the Work shall be bolted to take care of all dead load, wind and erection stresses.
All erection bolts used in welded construction may be tightened securely and left in place.
If removed, the holes shall be filled with plug welds.
Field bolting shall be in accordance with the requirements specified for shop fabrication.
Untrue holes shall be corrected by reaming.
Where the surface of a bolted part has a slope of more than 1:20, a beveled washer shall be used to compensate for the lack of parallelism.
Bolt heads and nuts shall be drawn tight against the Work with a suitable wrench not less than 15 inches long.
Bolt heads shall be tapped with a hammer while the nut is being tightened.
Field Painting of Structures
Surfaces where the top coat of paint has been damaged shall be retouched after installation.
The cleaning, pretreatment, and priming of welds and the areas adjacent thereto shall be done promptly after the acceptance of the weld.
Care shall be taken to properly mask signals heads, signs, pedestrian pushbuttons and their mounting hardware to keep paint from splashing onto these components.
Masking shall be removed after completion of the painting process.
A sufficient number of paint coatings shall be applied to each structure to result in a uniform finish once completed.
All structures shall be air blasted using high pressure air to remove peeled paint and dust prior to application of new paint.
Bolted parts shall fit solidly together when assembled and shall not be separated by gaskets or any other interposed compressible material.
When assembled, all joint surfaces, including those adjacent to the bolt heads, nuts, or washers, shall be free of scale, except tight mill scale, and shall also be free of burrs, dirt,
and other foreign material that would prevent solid seating of the parts.
Each fastener shall be tightened to at least the minimum bolt tension as recommended by the pole manufacturer using ASTM A325 or A490 bolts for the size of fastener used.
Threaded bolts shall be tightened with properly calibrated wrenches or by the "turn-of-nut" method.
Bolts may be installed without hardened washers when tightening takes place by the "turn-of-bolt" method. Any bolt tightened by the calibrated wrench method (or by torque control) shall
have a hardened washer under the element (nut or bolt head) turned in to a point not closer than 7/8 of the bolt diameter from the center of the washer.
Grouting
The Contractor shall perform all Work required to complete the grout work associated with installing the signal structure and furnish all supplementary items necessary for its proper
installation.
Where signal poles and/or mast arms exist on raised foundations that are to be removed and installed on new foundations, the Contractor shall store these poles, mast arms, street lights,
and wiring until they can be installed on their new foundations.
Wind dampers
Wind dampers shall be installed on all mast arms.
Dampers shall be installed using Astro Sign Brac or Signfix Aluminum Channel or approved equivalent.
Signs
The Contractor shall furnish, install and relocate existing signs as shown in the Drawings.
Mast-arm signs shall be mounted with Astro-sign Brac or Signfix aluminum channel or equivalent as approved by the Engineer.
Zinc Coated Steel Wire
Install strands as shown on the plans. Splicing is not permitted.
When the strand is used as a messenger cable or span wire, ground it to the grounding conductor at each pole. Metal poles may be used as the grounding conductor. Ensure a resistance
less than 1 ohm from the strand to the ground.
Strain Pole
Perform work in accordance with the details shown on the plans and the requirements of this Item.
Use established industry and utility safety practices while installing poles located near overhead or underground utilities. Consult with the appropriate utility company before beginning
work.
Locate strain poles as shown on the plans unless otherwise directed to secure a more desirable location or avoid conflict with utilities. Stake the strain pole for verification by the
Engineer.
All appurtenance’s end of pole caps and/or hand hole covers shall be installed within 24 hours of installation of applicable appurtenance.
Construction foundations for new strain poles in accordance with the Item for Foundations.
No pole shall be placed on a foundation prior to ten (10) days following placement of concrete. Erect structures after foundation concrete has attained its design strength.
Timber Pole
Perform work in accordance with the details shown on the plans and the requirements of this Item.
Use established industry and utility safety practices while installing poles located near overhead or underground utilities. Consult with the appropriate utility company before beginning
work.
Set the pole a minimum depth in accordance with Table 3, unless otherwise shown on the plans.
Table 3
Pole Setting Depth
Pole Length (ft.)
Min Setting Depth (ft.)
25 or less
4.5
26–30
5.0
31–35
5.5
36–40
6.0
41–45
6.5
46–50
7.0
Locate timber poles as shown on the plans or as directed. Drill holes for setting poles a minimum of 1.5 diameters of the pole butt. Set the poles plumb, unless otherwise shown on the
plans. Backfill the holes thoroughly by tamping in 6 in. lifts. After tamping to grade, place additional backfill material in a 6 in. high cone around the pole to allow for settling.
Use material equal in composition and density to the surrounding area. Repair surface where existing surfacing material is removed, such as asphalt pavement or concrete riprap, with
like material to equivalent condition.
Foundations
All foundations shall be staked by the Contractor and approved by the Inspector prior to excavation or drilling.
While staking the pole locations, the Contractor, along with the Inspector, shall be cognizant of pedestrian needs by verifying the location of the push buttons and the pedestrian heads.
Concrete foundations for signal structures shall be located so that the closest face is a minimum of 3 feet from the face of the nearest vertical curb.
Before excavating foundations probe to determine the location of utilities and structures.
Foundations shall be paid for once, however, payment for additional work due to unforeseen conditions will be negotiated based on number of labor hours and materials used.
Furnish all supplementary items necessary for proper foundation installation.
Excavation for all foundations shall be done in accordance with lines and depths indicated on the Drawings.
All loose material shall be removed from the excavation before concrete is placed.
Any water shall be removed by pumping or bailing.
The use of explosives will not be permitted.
Foundations shall be constructed to the dimensions shown on the Drawings.
The Contractor is required to make certain that the top of the finished foundation is level and formed.
Anchor bolts and conduits shall be held rigidly in place by a template until the concrete is set.
A mechanical vibrator shall be used for compacting and working the concrete. After the concrete has been placed and the top struck off, it shall be covered with wet cotton or burlap
mats or other appropriate form of curing, for not less than 96 hours.
All bracing and templates for anchor bolts shall remain in place for 96 hours after the concrete is poured.
During that time, the anchor bolts and conduit shall not be subjected to any applied strain.
Backfill shall be tamped with mechanical tamps in 6 inches layers to the density of the surrounding ground.
Where excavation is made in the roadway shoulder, the shoulder shall be replaced with material equivalent to the original composition.
All excavated material, not required for backfill, shall be promptly removed and disposed of by the Contractor, outside the limits of the Project.
The Work Site shall be kept clean and neat at all times.
No concrete shall be placed when the atmospheric temperature drops below 40 degrees Fahrenheit (temperature reading taken in the shade away from artificial heat) unless permission to
do so is given by the Inspector.
Refer to the item Cast-in-Place Concrete.
Sample concrete beams for all concrete used shall be made for testing by City personnel upon written request by the City.
All exposed foundations shall receive a Class C finish.
The top of the signal foundation is to be level with the horizon in all directions.
The signal foundation shall be plum.
The top of the mast arm vertical pole’s foundation’s elevation shall be set such that it is the same elevation as the crown of the applicable street’s leg, at the same relative location
as the traffic signal pol’s location.
Anchor Bolts and Base Plates
Signal foundation bolts are to be place such that the exposed portion is not to extend more than 9 (± ½ inches) above the top of the signal foundation and shall be of equal height with
all other applicable bottles with in the foundations.
Base plate leveling nuts shall be such that the bottom of the nuts are ¾ inches (± ¼ inches) average above the top of the signal foundation.
Pole anchor bolts shall be aligned to be parallel to the tangent of the street curb that the pole is intended to serve.
Anchor bolts for mast arm signal poles shall be set so that 2 are in tension and 2 are in compression.
Provide a formed and smooth finish for all exposed portions.
A ¾ inch chamfer shall be formed on the top edge.
Tubing used to form pole foundations shall not be visible and all exposed concrete shall be finished with vinyl concrete patch mix to provide a smooth quality finish with all voids filled
and no aggregate exposed.
If any concrete is to abut the signal foundation, a 3/8 inch full depth expansion joint with sealant will be installed along all possible contract points. The join sealant shall be silicone
and meet federal specification TT-S-001543A for Class A sealant. Prior to installation, the contractor shall furnish the City certification by an independent testing laboratory that
the silicone joint sealant meets the City’s requirements.
For each system component, in part or whole, that will be a part of or adjoining to a sidewalk or a proposed sidewalk, any system component shall be installed such that the top of the
system component is at the same elevation as the top of the sidewalk (or the proposed sidewalk) and does not cause a trip hazard.
The ground around a system component shall be graded in such a manner that all water runs away from the system component, unless otherwise directed by the City.
Meter Pedestal
Perform work in accordance with the details shown on the plans and the requirements of this Item. Use established industry and utility safety practices when installing, relocating, or
removing electrical services located near overhead or underground utilities. Consult with the appropriate utility company before beginning work.
Installation.
Furnish and install electrical service equipment. Ensure components of the electrical service meet the requirements of the Electrical Detail Standards. Follow NEC and local utility company
requirements when installing the electrical equipment. Coordinate the utility companies’ work for providing service.
Relocation.
Coordinate relocation with the appropriate utility company before beginning work. Remove existing electrical service according to “Removal” under this Item. Reinstall existing electrical
service according to “Installation” of this Item. Replace or add circuit breakers as noted on the plans.
Removal.
Coordinate removal with the appropriate utility company before beginning work. Before the removal of the electrical service, disconnect and isolate any existing electrical service equipment
in accordance with the utility company’s requirements.
Remove existing electrical service support a minimum of 2 ft. below finish grade unless otherwise shown on the plans. Repair the remaining hole by backfilling with material equal in
composition and density to the surrounding area. Replace any surfacing such as asphalt pavement or concrete riprap with like material to equivalent condition.
Disconnect conductors and remove them from the conduit. Cut off all protruding conduit 6 in. below finished grade. Abandoned conduit need not be removed unless shown on the plans.
Reconnect conductors and conduit to be reused when shown on the plans. Make all splices in ground boxes unless otherwise shown on the plans.
Accept ownership of unsalvageable materials, and dispose of them in accordance with federal, state, and local regulations.
The contractor shall contact the user company to establish the final location of the power source for the signal installation. If the installation of separate wood poles or pedestal
services are required to provide power to the signal installation, they shall be considered subsidiary to the electrical service bid item.
ILSN Sign
Fabricated and install internally illuminated street name signs in accordance with the details and dimensions shown on the plans, specified, or as approved by the Engineer. Install in
accordance with the latest Electrical Detail Standards. Install signs level and plum brackets or clamps. Attach ILSN to traffic signal poles per the manufacture’s instructions or as
shown on the plans. Final location to be determined in the field by the City.
Use established industry and utility safety practices when installing ILSNs located near overhead or underground utilities. Consult the appropriate utility company before beginning work.
Prevent scarring or marring of the poles, mast arms, and ILSNs. Replace damaged components. Repair damaged galvanizing through the use of zinc-based solders, sprayed zinc, or zinc-rich
paints for repairs as described in this section. Repair damaged painted areas per manufacturers requirements.
Repair Processes for Galvanized Areas
Zinc-Based Solders
Remove moisture, oil, grease, dirt, corrosion products, and welding slag or flux from surfaces to be repaired. Clean surface to white metal by wire-brushing, light grinding, or mild
blasting extending into the surrounding undamaged galvanized coating. Preheat cleaned areas to at least 600°F, but not more than 750°F. Wire-brush while heating and evenly distribute
a layer of zinc solder. Flush the repaired area with water or wipe with a damp cloth to remove flux residue when repair is completed.
Sprayed Zinc (Metalizing)
Remove oil, grease, corrosion products, and any welding slag or flux from surfaces to be repaired, and ensure the surfaces are dry. Clean surface to white metal by wire-brushing, light
grinding, or mild blasting extending into the surrounding undamaged galvanized coating. Apply coating by metal-spraying pistols fed with either zinc wire, ribbon, or powder. Provide
a coating that is uniform and free of lumps, coarse areas, or loose particles.
Organic Zinc-Rich Paints
Remove oil, grease, corrosion products, and welding slag or flux from surfaces to be repaired, and ensure the surfaces are clean and dry. Clean surface to near-white metal by wire- brushing,
light grinding, or mild blasting extending into the surrounding undamaged coating to provide a smooth repair. Spray or brush-apply the paint to the prepared area in accordance with
the paint manufacturer’s instructions to attain the required dry-film thickness. Provide multiple passes when using spray application.
Controller Cabinet Assembly
Each controller cabinet shall be modified for use at a specific intersection in accordance with the instructions included in the Drawings.
Each cabinet shall be prepared and tested for on-the-street use
The contractor shall install a cabinet on a foundation with a service apron.
Connect all field wirings to the controller-cabinet assembly. The contractor shall be responsible for the terminus of all field wires in the cabinet at the appropriate connections.
All wiring modifications made in conjunction with preparing the cabinet for use at a specific intersection shall be documented on the cabinet prints for that intersection.
Signal Controller
Upon the City relinquishing control of the traffic control signal system to the contractor, the contractor shall be responsible for programming and logic changes necessary to accomplish
phase rotation and the sequencing shown on the design plan(s) or as needed for the conditions. The contractor will provide a written copy to the City of any said changes within two
(2) City working weekdays.
Luminaire Head
Perform work in accordance with the details shown on the plans and the requirements of this Item.
Use established industry and utility safety practices when installing, relocation, or removing luminaires located near overhead or underground utilities. Consult with the appropriate
utility company before beginning work.
Prevent scarring or marring of the luminaires. Replace damaged components. Repair damaged galvanizing through the use of zinc-based solders, sprayed zinc, or zinc-rich paints for repairs
as described in this section. Repair damaged painted areas of a luminaire per manufacturer requirements.
Repair Processes for Galvanized Areas
Zinc-Based Solders
Remove moisture, oil, grease, dirt, corrosion products, and welding slag or flux from surfaces to be repaired. Clean surface to white metal by wire-brushing, light grinding, or mild
blasting extending into the surrounding undamaged galvanized coating. Preheat cleaned areas to at least 600°F, but not more than 750°F. Wire-brush while heating and evenly distribute
a layer of zinc solder. Flush the repaired area with water or wipe with a damp cloth to remove flux residue when repair is completed.
Sprayed Zinc (Metalizing)
Remove oil, grease, corrosion products, and any welding slag or flux from surfaces to be repaired, and ensure the surfaces are dry. Clean surface to white metal by wire-brushing, light
grinding, or mild blasting extending into the surrounding undamaged galvanized coating. Apply coating by metal-spraying pistols fed with either zinc wire, ribbon, or powder. Provide
a coating that is uniform and free of lumps, coarse areas, or loose particles.
Organic Zinc-Rich Paints
Remove oil, grease, corrosion products, and welding slag or flux from surfaces to be repaired, and ensure the surfaces are clean and dry. Clean surface to near-white metal by wire- brushing,
light grinding, or mild blasting extending into the surrounding undamaged coating to provide a smooth repair. Spray or brush-apply the paint to the prepared area in accordance with
the paint manufacturer’s instructions to attain the required dry-film thickness. Provide multiple passes when using spray application.
Installation
Furnish and install luminaires and assembly components with the details, dimensions, and requirements shown on the plans. Test installed luminaires in accordance with requirements detailed
in Section 3.6, System Startup for Lighting Systems.
The power run shall be continuous from the electrical meter pedestal to each luminaire.
The breaker/disconnect shall be in the electrical meter pedestal.
No disconnect of fuses shall be placed on or within the signal pole.
Relocation
Relocate luminaires and assembly components with the details, dimensions, and requirements shown on the plans.
Disconnect and remove conductors from abandoned circuits. Remove abandoned conduit or ducts to a point 6 inches below final grade. Reconnect conduit and ducts to be reused. Replace damaged
conduit and ducts. Replace conductors.
Furnish and install new internal conductors, fused and unfused connectors, and lamps.
Removal
Remove luminaires and assembly components in accordance with established industry and utility safety practices.
Stockpile luminaires and assembly hardware at a location designated by the City. Luminaires and assembly hardware will remain the City property unless otherwise shown on the plans or
as directed.
Disconnect and remove conductors from abandoned circuits. Remove abandoned conduit or ducts to a point 6 inches below final grade. Reconnect conduit and ducts to be reused. Replace damaged
conduit and ducts. Replace conductors.
Accept ownership of unsalvageable materials and dispose of in accordance with federal, state, and local regulations.
Replace Luminaires
Removing existing luminaires. Furnish and install luminaires in accordance with the details, dimensions, and requirements shown on the plans.
Testing
Ensure that all components are property installed per their specifications.
Place the lighting system in operation for a 14-day test period. Burn the lighting system steadily for 48 hr. Then cycle the photocell or other control device for 12 days.
Pass a 14-day performance test of the lighting system.
Replace materials that are damaged or have failed before acceptance. Damaged illumination assemblies, except those damaged by the Contractor, and minor failures of lamps, ballasts, and
photocells are not cause for modifying or restarting the performance test.
Replace failed or damaged existing lighting system components when caused by the Contractor.
The City will relieve the Contractor of maintenance responsibilities upon passing a 14-day performance test of the lighting system and acceptance of the Contract.
CCTV Camera
Installation
Install in locations as shown in Drawings and as determined in the field by the City.
CCTV mounting height, above ground, shall be site specific and as approved by the City.
Maximize standardization and consistency by utilizing industry standard techniques in equipment design and construction, with the minimum number of parts, subassemblies, circuits, cards,
and modules. Design equipment for ease of maintenance.
Provide mounting bracket assemblies or apparatus to mount equipment to structures identified on plans.
Include all mounting plates, screws, bolts, nuts, washers, and ancillary hardware needed to fabricate the entire mounting bracket.
Contractor shall provide a minimum of 2 feet for drip loops at connections.
Contractor shall test system to ensure compatibility with City systems.
Wireless Radio System
Perform work in accordance with the details shown on the plans and the requirements of this Item.
Install wireless radio system in accordance with the manufacturer’s recommendations.
The antenna shall be mounted at the location on the plans and as determined in the filed by the City.
Install a 1 ¼ inch hole with rubber grommet on the back side of luminaire vertical pole. Location of holes is to be determined in the field by the City.
Hole location are to be marked by the contractor and approved by the City prior to drilling.
Contractor shall provide a minimum of 2 feet for drip loops for required wiring.
Cast-in-Place Concrete
Formwork
Design, erect, shore, brace, and maintain formwork, according to ACI 301, to support vertical, lateral, static, and dynamic loads, and construction loads that might be applied, until
structure can support such loads.
Construct formwork so concrete members and structures are of size, shape, alignment, elevation, and position indicated, within tolerance limits of ACI 117.
Vertical alignment
Lines, surfaces and arises less than 100 feet in height - 1 inch.
Outside corner of exposed corner columns and control joints in concrete exposed to view less than 100 feet in height - 1/2 inch.
Lines, surfaces and arises greater than 100 feet in height - 1/1000 times the height but not more than 6 inches.
Outside corner of exposed corner columns and control joints in concrete exposed to view greater than 100 feet in height - 1/2000 times the height but not more than 3 inches.
Lateral alignment
Members - 1 inch.
Centerline of openings 12 inches or smaller and edge location of larger openings in slabs - 1/2 inch.
Sawcuts, joints, and weakened plane embedments in slabs - 3/4 inch.
Level alignment
Elevation of slabs-on-grade - 3/4 inch.
Elevation of top surfaces of formed slabs before removal of shores - 3/4 inch.
Elevation of formed surfaces before removal of shores - 3/4 inch.
Cross-sectional dimensions: Overall dimensions of beams, joists, and columns and thickness of walls and slabs.
12 inch dimension or less - plus 1/2 inch to minus 1/4 inch.
Greater than 12 inch to 3 foot dimension - plus 1/2 inch to minus 3/8 inch.
Greater than 3 foot dimension - plus 1 inch to minus 3/4 inch.
Relative alignment
Stairs
Difference in height between adjacent risers - 1/8 inch.
Difference in width between adjacent treads - 1/4 inch.
Maximum difference in height between risers in a flight of stairs - 3/8 inch.
Maximum difference in width between treads in a flight of stairs - 3/8 inch.
Grooves
Specified width 2 inches or less - 1/8 inch.
Specified width between 2 inches and 12 inches - 1/4 inch.
Vertical alignment of outside corner of exposed corner columns and control joint grooves in concrete exposed to view - 1/4 inch in 10 feet.
All other conditions - 3/8 inch in 10 feet.
Limit concrete surface irregularities, designated by ACI 347R as abrupt or gradual, as follows:
Class B, 1/4 inch for smooth-formed finished surfaces.
Class C, 1/2 inch for rough-formed finished surfaces.
Construct forms tight enough to prevent loss of concrete mortar.
Fabricate forms for easy removal without hammering or prying against concrete surfaces. Provide crush or wrecking plates where stripping may damage cast concrete surfaces. Provide
top forms for inclined surfaces steeper than 1.5 horizontal to 1 vertical.
Install keyways, reglets, recesses, and the like, for easy removal.
Do not use rust-stained steel form-facing material.
Set edge forms, bulkheads, and intermediate screed strips for slabs to achieve required elevations and slopes in finished concrete surfaces. Provide and secure units to support screed
strips; use strike-off templates or compacting-type screeds.
Construct formwork to cambers shown or specified on the Drawings to allow for structural deflection of the hardened concrete. Provide additional elevation or camber in formwork as required
for anticipated formwork deflections due to weight and pressures of concrete and construction loads.
Foundation Elements: Form the sides of all below grade portions of beams, pier caps, walls, and columns straight and to the lines and grades specified. Do not earth form foundation
elements unless specifically indicated on the Drawings.
Provide temporary openings for cleanouts and inspection ports where interior area of formwork is inaccessible. Close openings with panels tightly fitted to forms and securely braced
to prevent loss of concrete mortar. Locate temporary openings in forms at inconspicuous locations.
Chamfer exterior corners and edges of permanently exposed concrete.
Form openings, chases, offsets, sinkages, keyways, reglets, blocking, screeds, and bulkheads required in the Work. Determine sizes and locations from trades providing such items.
Clean forms and adjacent surfaces to receive concrete. Remove chips, wood, sawdust, dirt, and other debris just before placing concrete.
Retighten forms and bracing before placing concrete, as required, to prevent mortar leaks and maintain proper alignment.
Coat contact surfaces of forms with form-release agent, according to manufacturer's written instructions, before placing reinforcement, anchoring devices, and embedded items.
Do not apply form release agent where concrete surfaces are scheduled to receive subsequent finishes which may be affected by agent. Soak contact surfaces of untreated forms with clean
water. Keep surfaces wet prior to placing concrete.
Embedded Items
Place and secure anchorage devices and other embedded items required for adjoining work that is attached to or supported by cast-in-place concrete. Use setting drawings, templates,
diagrams, instructions, and directions furnished with items to be embedded.
Install anchor rods, accurately located, to elevations required and complying with tolerances in AISC 303, Section 7.5.
Spacing within a bolt group: 1/8 inch
Location of bolt group (center): ½ inch
Rotation of bolt group: 5 degrees
Angle off vertical: 5 degrees
Bolt projection: ± 3/8 inch
Install reglets to receive waterproofing and to receive through-wall flashings in outer face of concrete frame at exterior walls, where flashing is shown at lintels, shelf angles, and
other conditions.
Removing and Reusing Forms
Do not backfill prior to concrete attaining 70 percent of its 28-day design compressive strength.
General: Formwork for sides of beams, walls, columns, and similar parts of the Work that does not support weight of concrete may be removed after cumulatively curing at not less than
50 degrees Fahrenheit for 24 hours after placing concrete, if concrete is hard enough to not be damaged by form-removal operations and curing and protection operations are maintained.
Leave formwork for beam soffits, joists, slabs, and other structural elements that supports weight of concrete in place until concrete has achieved at least 70 percent of its 28-day
design compressive strength.
Do not remove formwork supporting conventionally reinforced concrete until concrete has attained 70 percent of its specified 28 day compressive strength as established by tests of field
cured cylinders. In the absence of cylinder tests, supporting formwork shall remain in place until the concrete has cured at a temperature of at least 50 degrees Fahrenheit for the
minimum cumulative time periods given in ACI 347, Section 3.7.2.3. Add the period of time when the surrounding air temperature is below 50 degrees Fahrenheit, to the minimum listed
time period. Formwork for 2-way conventionally reinforced slabs shall remain in place for at least the minimum cumulative time periods specified for 1-way slabs of the same maximum
span.
Immediately reshore 2-way conventionally reinforced slabs after formwork removal. Reshores shall remain until the concrete has attained the specified 28 day compressive strength.
Minimum cumulative curing times may be reduced by the use of high-early strength cement or forming systems which allow form removal without disturbing shores, but only after the Contractor
has demonstrated to the satisfaction of the Engineer that the early removal of forms will not cause excessive sag, distortion or damage to the concrete elements.
Completely remove wood forms. Provide temporary openings if required.
Provide adequate methods of curing and thermal protection of exposed concrete if forms are removed prior to completion of specified curing time.
Reshore areas required to support construction loads in excess of 20 pounds per square foot to properly distribute construction loading. Construction loads up to the rated live load
capacity may be placed on unshored construction provided the concrete has attained the specified 28 day compressive strength.
Obtaining concrete compressive strength tests for the purposes of form removal is the responsibility of the Contractor.
Remove forms only if shores have been arranged to permit removal of forms without loosening or disturbing shores.
Clean and repair surfaces of forms to be reused in the Work. Split, frayed, delaminated, or otherwise damaged form-facing material will not be acceptable for exposed surfaces. Apply
new form-release agent.
When forms are reused, clean surfaces, remove fins and laitance, and tighten to close joints. Align and secure joints to avoid offsets. Do not use patched forms for exposed concrete
surfaces unless approved by Engineer.
Shores and Reshores
The Contractor is solely responsible for proper shoring and reshoring.
Comply with ACI 318 and ACI 301 for design, installation, and removal of shoring and reshoring.
Do not remove shoring or reshoring until measurement of slab tolerances is complete.
Plan sequence of removal of shores and reshore to avoid damage to concrete. Locate and provide adequate reshoring to support construction without excessive stress or deflection.
Steel Reinforcement
General: Comply with CRSI's "Manual of Standard Practice" for placing reinforcement.
Do not cut or puncture vapor retarder. Repair damage and reseal vapor retarder before placing concrete.
Clean reinforcement of loose rust and mill scale, earth, ice, and other foreign materials that would reduce bond to concrete.
Accurately position, support, and secure reinforcement against displacement. Locate and support reinforcement with bar supports to maintain minimum concrete cover. Do not tack weld
crossing reinforcing bars.
Weld reinforcing bars according to AWS D1.4, where indicated. Only steel conforming to ASTM A706 may be welded.
Installation tolerances
Top and bottom bars in slabs, girders, beams and joists:
Members 8 inches deep or less: ±3/8 inch
Members more than 8 inches deep: ±1/2 inch
Concrete Cover to Formed or Finished Surfaces: ±3/8 inches for members 8 inches deep or less; ±1/2 inches for members over 8 inches deep, except that tolerance for cover shall not exceed
1/3 of the specified cover.
Concrete Cover
Reinforcing in structural elements deposited against the ground: 3 inches
Reinforcing in formed beams, columns and girders: 1-1/2 inches
Grade beams and exterior face of formed walls and columns exposed to weather or in contact with the ground: 2 inches
Interior faces of walls: 1 inches
Slabs: 3/4 inches
Splices: Provide standard reinforcement splices by lapping and tying ends. Comply with ACI 318 for minimum lap of spliced bars where not specified on the documents. Do not lap splice
no. 14 and 18 bars.
Field Welding of Embedded Metal Assemblies
Remove all paint and galvanizing in areas to receive field welds.
Field Prepare all areas where paint or galvanizing has been removed with the specified paint or cold galvanizing compound, respectively.
Joints
General: Construct joints true to line with faces perpendicular to surface plane of concrete.
Construction Joints: Install so strength and appearance of concrete are not impaired, at locations indicated or as approved by Engineer.
Place joints perpendicular to main reinforcement. Continue reinforcement across construction joints, unless otherwise indicated. Do not continue reinforcement through sides of strip
placements of floors and slabs.
Form keyed joints as indicated. Embed keys at least 1-1/2 inches into concrete.
Locate joints for beams, slabs, joists, and girders in the middle third of spans. Offset joints in girders a minimum distance of twice the beam width from a beam-girder intersection.
Locate horizontal joints in walls and columns at underside of floors, slabs, beams, and girders and at the top of footings or floor slabs.
Space vertical joints in walls as indicated. Locate joints beside piers integral with walls, near corners, and in concealed locations where possible.
Use a bonding agent at locations where fresh concrete is placed against hardened or partially hardened concrete surfaces.
Doweled Joints: Install dowel bars and support assemblies at joints where indicated. Lubricate or asphalt coat 1-1/2 of dowel length to prevent concrete bonding to 1 side of joint.
Waterstops
Flexible Waterstops: Install in construction joints and at other joints indicated to form a continuous diaphragm. Install in longest lengths practicable. Support and protect exposed
waterstops during progress of the Work. Field fabricate joints in waterstops according to manufacturer's written instructions.
Self-Expanding Strip Waterstops: Install in construction joints and at other locations indicated, according to manufacturer's written instructions, adhesive bonding, mechanically fastening,
and firmly pressing into place. Install in longest lengths practicable.
Adhesive Anchors
Comply with the manufacturer's installation instructions on the hole diameter and depth required to fully develop the tensile strength of the adhesive anchor or reinforcing bar.
Properly clean out the hole utilizing a wire brush and compressed air to remove all loose material from the hole, prior to installing adhesive material.
Concrete Placement
Before placing concrete, verify that installation of formwork, reinforcement, and embedded items is complete and that required inspections have been performed.
Do not add water to concrete during delivery, at Project site, or during placement unless approved by Engineer.
Before test sampling and placing concrete, water may be added at Project site, subject to limitations of ACI 301.
Do not add water to concrete after adding high-range water-reducing admixtures to mixture.
Do not exceed the maximum specified water/cement ratio for the mix.
Deposit concrete continuously in 1 layer or in horizontal layers of such thickness that no new concrete will be placed on concrete that has hardened enough to cause seams or planes of
weakness. If a section cannot be placed continuously, provide construction joints as indicated. Deposit concrete to avoid segregation.
Deposit concrete in horizontal layers of depth to not exceed formwork design pressures, 15 feet maximum and in a manner to avoid inclined construction joints.
Consolidate placed concrete with mechanical vibrating equipment according to ACI 301.
Do not use vibrators to transport concrete inside forms. Insert and withdraw vibrators vertically at uniformly spaced locations to rapidly penetrate placed layer and at least 6 inches
into preceding layer. Do not insert vibrators into lower layers of concrete that have begun to lose plastiCity. At each insertion, limit duration of vibration to time necessary to
consolidate concrete and complete embedment of reinforcement and other embedded items without causing mixture constituents to segregate.
Do not permit concrete to drop freely any distance greater than 10 feet for concrete containing a high range water reducing admixture (superplasticizer) or 5 feet for other concrete.
Provide chute or tremie to place concrete where longer drops are necessary. Do not place concrete into excavations with standing water. If place of deposit cannot be pumped dry, pour
concrete through a tremie with its outlet near the bottom of the place of deposit.
Discard pump priming grout and do not use in the structure.
Deposit and consolidate concrete for floors and slabs in a continuous operation, within limits of construction joints, until placement of a panel or section is complete.
Consolidate concrete during placement operations so concrete is thoroughly worked around reinforcement and other embedded items and into corners.
Maintain reinforcement in position on chairs during concrete placement.
Screed slab surfaces with a straightedge and strike off to correct elevations.
Slope surfaces uniformly to drains where required.
Begin initial floating using bull floats or darbies to form a uniform and open-textured surface plane, before excess bleedwater appears on the surface. Do not further disturb slab surfaces
before starting finishing operations.
Cold-Weather Placement: Comply with ACI 306.1 and as follows. Protect concrete work from physical damage or reduced strength that could be caused by frost, freezing actions, or low
temperatures.
When average high and low temperature is expected to fall below 40 degrees Fahrenheit for 3 successive days, maintain delivered concrete mixture temperature within the temperature range
required by ACI 301.
Do not use frozen materials or materials containing ice or snow. Do not place concrete on frozen subgrade or on subgrade containing frozen materials.
Do not use calcium chloride, salt, or other materials containing antifreeze agents or chemical accelerators unless otherwise specified and approved in mixture designs.
Hot-Weather Placement: Comply with ACI 305.1 and as follows:
Maintain concrete temperature below 95 degrees Fahrenheit at time of placement. Chilled mixing water or chopped ice may be used to control temperature, provided water equivalent of
ice is calculated to total amount of mixing water. Using liquid nitrogen to cool concrete is Contractor's option.
Fog-spray forms, steel reinforcement, and subgrade just before placing concrete. Keep subgrade uniformly moist without standing water, soft spots, or dry areas.
Finishing Formed Surfaces
Rough-Formed Finish: As-cast concrete texture imparted by form-facing material with tie holes and defects repaired and patched. Remove fins and other projections that exceed specified
limits on formed-surface irregularities.
Apply to concrete surfaces not exposed to public view.
Related Unformed Surfaces: At tops of walls, horizontal offsets, and similar unformed surfaces adjacent to formed surfaces, strike off smooth and finish with a texture matching adjacent
formed surfaces. Continue final surface treatment of formed surfaces uniformly across adjacent unformed surfaces, unless otherwise indicated.
Miscellaneous Concrete Items
Filling In: Fill in holes and openings left in concrete structures, unless otherwise indicated, after work of other trades is in place. Mix, place, and cure concrete, as specified,
to blend with in-place construction. Provide other miscellaneous concrete filling indicated or required to complete the Work.
Curbs: Provide monolithic finish to interior curbs by stripping forms while concrete is still green and by steel-troweling surfaces to a hard, dense finish with corners, intersections,
and terminations slightly rounded.
Equipment Bases and Foundations: Provide machine and equipment bases and foundations as shown on Drawings. Set anchor bolts for machines and equipment at correct elevations, complying
with diagrams or templates from manufacturer furnishing machines and equipment.
Housekeeping pads: Normal weight concrete (3000 psi), reinforced with #3@16 inches on center set at middepth of pad. Trowel concrete to a dense, smooth finish. Set anchor bolts for securing
mechanical or electrical equipment during pouring of concrete fill.
Protective slabs ("Mud slabs"): Normal weight concrete (2500 psi minimum) with a minimum thickness of 3-1/2 inches. Finish slab to a wood float finish.
Concrete Protecting and Curing
General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures. Comply with ACI 306.1 for cold-weather protection and ACI 305.1 for hot-weather
protection during curing.
Formed Surfaces: Cure formed concrete surfaces, including underside of beams, supported slabs, and other similar surfaces. If forms remain during curing period, moist cure after loosening
forms. If removing forms before end of curing period, continue curing for the remainder of the curing period.
Unformed Surfaces: Begin curing immediately after finishing concrete. Cure unformed surfaces, including floors and slabs, concrete floor toppings, and other surfaces.
Cure concrete according to ACI 308.1, by 1 or a combination of the following methods:
Moisture Curing: Keep surfaces continuously moist for not less than 7 days with the following materials:
Water
Continuous water-fog spray
Absorptive cover, water saturated, and kept continuously wet. Cover concrete surfaces and edges with 12-inch lap over adjacent absorptive covers
Moisture-Retaining-Cover Curing: Cover concrete surfaces with moisture-retaining cover for curing concrete, placed in widest practicable width, with sides and ends lapped at least 12
inches, and sealed by waterproof tape or adhesive. Cure for not less than 7 days. Immediately repair any holes or tears during curing period using cover material and waterproof tape.
Moisture cure or use moisture-retaining covers to cure concrete surfaces to receive floor coverings.
Moisture cure or use moisture-retaining covers to cure concrete surfaces to receive penetrating liquid floor treatments.
Cure concrete surfaces to receive floor coverings with either a moisture-retaining cover or a curing compound that the manufacturer certifies will not interfere with bonding of floor
covering used on Project.
Curing Compound: Apply uniformly in continuous operation by power spray or roller according to manufacturer's written instructions. Recoat areas subjected to heavy rainfall within
3 hours after initial application. Maintain continuity of coating and repair damage during curing period.
REPAIR
Concrete Surface Repairs
Defective Concrete: Repair and patch defective areas when approved by Engineer. Remove and replace concrete that cannot be repaired and patched to Engineer’s approval.
Patching Mortar: Mix dry-pack patching mortar, consisting of 1 part portland cement to 2-1/2 parts fine aggregate passing a No. 16 sieve, using only enough water for handling and placing.
Repairing Formed Surfaces: Surface defects include color and texture irregularities, cracks, spalls, air bubbles, honeycombs, rock pockets, fins and other projections on the surface,
and stains and other discolorations that cannot be removed by cleaning.
Immediately after form removal, cut-out honeycombs, rock pockets, and voids more than 1/2 inch in any dimension in solid concrete, but not less than 1 inch in depth. Make edges of cuts
perpendicular to concrete surface. Clean, dampen with water, and brush-coat holes and voids with bonding agent. Fill and compact with patching mortar before bonding agent has dried.
Fill form-tie voids with patching mortar or cone plugs secured in place with bonding agent.
Repair defects on surfaces exposed to view by blending white portland cement and standard portland cement so that, when dry, patching mortar will match surrounding color. Patch a test
area at inconspicuous locations to verify mixture and color match before proceeding with patching. Compact mortar in place and strike off slightly higher than surrounding surface.
Repair defects on concealed formed surfaces that affect concrete's durability and structural performance as determined by Engineer.
Repairing Unformed Surfaces: Test unformed surfaces, such as floors and slabs, for finish and verify surface tolerances specified for each surface. Correct low and high areas. Test
surfaces sloped to drain for trueness of slope and smoothness; use a sloped template.
Repair finished surfaces containing defects. Surface defects include spalls, pop outs, honeycombs, rock pockets, crazing and cracks in excess of 0.01 inch wide or that penetrate to
reinforcement or completely through unreinforced sections regardless of width, and other objectionable conditions.
After concrete has cured at least 14 days, correct high areas by grinding.
Correct localized low areas during or immediately after completing surface finishing operations by cutting out low areas and replacing with patching mortar. Finish repaired areas to
blend into adjacent concrete.
Repair defective areas, except random cracks and single holes 1 inch or less in diameter, by cutting out and replacing with fresh concrete. Remove defective areas with clean, square
cuts and expose steel reinforcement with at least a 3/4-inch clearance all around. Dampen concrete surfaces in contact with patching concrete and apply bonding agent. Mix patching
concrete of same materials and mixture as original concrete except without coarse aggregate. Place, compact, and finish to blend with adjacent finished concrete. Cure in same manner
as adjacent concrete.
Repair random cracks and single holes 1 inch or less in diameter with patching mortar. Groove top of cracks and cut out holes to sound concrete and clean off dust, dirt, and loose particles.
Dampen cleaned concrete surfaces and apply bonding agent. Place patching mortar before bonding agent has dried. Compact patching mortar and finish to match adjacent concrete. Keep
patched area continuously moist for at least 72 hours.
Perform structural repairs of concrete, subject to Engineer’s approval, using epoxy adhesive and patching mortar.
Repair materials and installation not specified above may be used, subject to Engineer’s approval.
FIELD QUALITY CONTROL
Work Quality
The quality of all work performed at the site(s) shall be done in such a manner as to require infrequent City guidance and/or supervision and minimal City inspection/review and sufficient
for City acceptance.
Field Tests and Inspections
Initial testing of all materials, construction items, or products incorporated in the Work will be performed at the direction of the City.
Embankment construction shall conform to NCTCOG’s Standard Specification for Public Works Construction Item #203.7 Embankment.
All backfill of structures shall conform to NCTCOG’s Standard Specification for Public Works Construction Item #504 Open Cut – Backfill.
Excavation shall conform to NCTCOG’s Standard Specification for Public Works Construction Item #203.4 Unclassified Street Excavation and 203.5 Unclassified Channel Excavation.
City will engage a special inspector and qualified testing and inspecting agency to perform field tests and inspections and prepare test reports.
The failure to require tests of materials by the Inspector shall in no way relieve the Contractor of his responsibility of furnishing materials conforming to these Specifications.
Tests, unless otherwise specified, shall be made in accordance with the latest methods of the ASTM or other approved test methods.
The Contractor shall provide such facilities, as the Inspector may require, for the collecting and forwarding of samples and shall not use the materials represented by the samples until
tests have been made.
The Contractor shall furnish adequate samples without charge.
Signal cables
The Traffic Management Manager or designee may require that all cables shall be checked for insulation resistance upon installation and prior to termination. The tests shall be made
with a test set operating at a minimum of 500 volts DC applied to the conductors.
Each conductor in the multi conductor signal cables shall be tested for insulation resistance relative to each other and to the outer covering of the cable. The minimum acceptance value
for insulation resistance shall be 1 megohm.
Controller cabinet
If the controller cabinet is to be supplied by the Contractor for this Project, the cabinet shall be tested at a facility located within the Dallas/Fort Worth area.
The Contractor shall notify the Inspector or his representative a minimum of 3 Working Days prior to beginning the test period of his intent to test a cabinet or group of cabinets.
At this point, the City may schedule an inspection team and notify the Contractor of the earliest date and time the team can visit.
Each cabinet shall be tested with a controller unit for a minimum of 24 continuous hours.
The cabinet test will include conflict monitor functions, detector unit function and load switch operation for conformance with cabinet hardware specifications, etc.
The cabinet must successfully pass all items otherwise the test is restarted for another 24 hour period.
Cast-in-Place Concrete
Inspections
Steel reinforcement placement
Headed bolts and studs
Verification of use of required design mixture
Concrete placement, including conveying and depositing
Curing procedures and maintenance of curing temperature
Verification of concrete strength before removal of shores and forms from beams and slabs
Concrete Tests: Perform testing of composite samples of fresh concrete obtained according to ASTM C172 according to the following requirements:
Testing Frequency: Obtain 1 composite sample for each day's pour of each concrete mixture exceeding 5 cubic yard, but less than 25 cubic yard, plus 1 set for each additional 50 cubic
yard or fraction thereof.
Slump: ASTM C143; 1 test at point of placement for each composite sample, but not less than 1 test for each day's pour of each concrete mixture. Perform additional tests when concrete
consistency appears to change.
Air Content: ASTM C231, pressure method, for normal-weight concrete; 1 test for each composite sample, but not less than 1 test for each day's pour of each concrete mixture.
Concrete Temperature: ASTM C1064; 1 test hourly when air temperature is 40 degrees Fahrenheit and below and when 80 degrees Fahrenheit and above, and 1 test for each composite sample.
Compression Test Specimens: ASTM C31.
Cast and laboratory cure 4 cylinders for each composite sample.
Do not transport field cast cylinders until they have cured for a minimum of 24 hours.
Compressive-Strength Tests: ASTM C39;
Test 1 cylinder at 7 days.
Test 2 cylinders at 28 days.
Hold 1 cylinder for testing at 56 days as needed.
When strength of field-cured cylinders is less than 85 percent of companion laboratory-cured cylinders, evaluate operations and provide corrective procedures for protecting and curing
in-place concrete.
Strength of each concrete mixture will be satisfactory if every average of any 3 consecutive compressive-strength tests equals or exceeds specified compressive strength and no compressive-strength
test value falls below specified compressive strength by more than 500 psi.
Report test results in writing to Engineer, concrete manufacturer, and Contractor within 48 hours of testing. Reports of compressive-strength tests shall contain Project identification
name and number, date of concrete placement, name of concrete testing and inspecting agency, location of concrete batch in Work, design compressive strength at 28 days, concrete mixture
proportions and materials, compressive breaking strength, and type of break for both 7- and 28-day tests.
Additional Tests: Testing and inspecting agency shall make additional tests of concrete when test results indicate that slump, air entrainment, compressive strengths, or other requirements
have not been met, as directed by Engineer. Testing and inspecting agency may conduct tests to determine adequacy of concrete by cored cylinders complying with ASTM C42 or by other
methods as directed by Engineer.
When the strength level of the concrete for any portion of the structure, as indicated by cylinder tests, falls below the specified requirements, provide improved curing conditions and/or
adjustments to the mix design as required to obtain the required strength. If the average strength of the laboratory control cylinders falls so low as to be deemed unacceptable, follow
the core test procedure set forth in ACI 301, Chapter 17. Locations of core tests shall be approved by the Engineer. Core sampling and testing shall be at Contractors expense.
If the results of the core tests indicate that the strength of the structure is inadequate, any replacement, load testing, or strengthening as may be ordered by the Engineer shall be
provided by the Contractor without cost to the City.
Additional testing and inspecting, at Contractor's expense, will be performed to determine compliance of replaced or additional work with specified requirements.
Correct deficiencies in the Work that test reports and inspections indicate does not comply with the Contract Documents.
Measure floor and slab flatness and levelness according to ASTM E1155 within 48 hours of finishing.
Concrete Finish Measurement and Tolerances
All floors are subject to measurement for flatness and levelness and comply with the following:
Slabs shall be flat within a tolerance of 5/16 inches in 10 feet when tested with a 10 foot long straightedge. Apply straightedge to the slab at 3 foot intervals in both directions,
lapping straightedge 3 feet on areas previously checked. Low spots shall not exceed the above dimension anywhere along the straightedge. Flatness shall be checked the next work day
after finishing.
Slabs shall be level within a tolerance of ± 1/4 inch in 10 feet, not to exceed 3/4 inches total variation, anywhere on the floor, from elevations indicated on the Drawings. Levelness
shall be checked on a 10 foot grid using a level after removal of forms.
Measurement Standard: All floors are subject to measurement for flatness and levelness, according to ASTM E1155.
2 Tiered Measurement Standard
Each floor test section and the overall floor area shall conform to the 2-tiered measurement standard as specified herein.
Minimum Local Value: The minimum local FF/FL values represent the absolute minimum surface profile that will be acceptable for any 1 test sample (line of measurements) anywhere within
the test area.
Specified Overall Value: The specified overall FF/FL values represent the minimum values acceptable for individual floor sections as well as the floor as a whole.
Floor Test Sections
A floor test section is defined as the smaller of the following areas:
The area bounded by column and/or wall lines
The area bounded by construction and/or control joint lines
Any combination of column lines and/or control joint lines
Test sample measurement lines within each test section shall be multidirectional along 2 orthogonal lines, as defined by ASTM E1155, at a spacing to be determined by the City's testing
agency.
The precise layout of each test section shall be determined by the City's testing agency.
Concrete Floor Finish Tolerance
The following values apply before removal of shores. Levelness values (FL) do not apply to intentionally sloped or cambered areas, nor to slabs poured on metal deck or precast concrete.
Slabs
Overall Value FF45/FL30
Minimum Local Value FF30/FL20
Floor Elevation Tolerance Envelope
The acceptable tolerance envelope for absolute elevation of any point on the slab surface, with respect to the elevation shown on the Drawings, is as follows:
Slab-on-Grade Construction: ± ¾ inch
Top surfaces of formed slabs measured prior to removal of supporting shores: ± ¾ inch
Top surfaces of all other slabs: ± ¾ inch
Slabs specified to slope shall have a tolerance from the specified slope of 3/8 inch in 10 feet at any point, up to ¾ inch from theoretical elevation at any point.
Non-Conforming Work
In the event that a material, construction item, product incorporated in the Work, embankment, backfill, excavation or any other item tested, fails to satisfy the minimum requirements
of the initial test described above, appropriate prove-out tests shall be made as directed by the Inspector to determine the extent of the failure and to verify that corrective measures
have brought the Item up to Specification requirements.
The cost of all testing necessary to determine the extent of the failure and the adequacy of the corrective measures shall be the responsibility of the Contractor.
SYSTEM STARTUP
Test Periods
The flashing mode test period shall be site specific as determined by the City. The minimum period shall be three (3) City working weekdays (each consisting of 24 hours). This period
may include the weekend and/or City designated holiday(s) but, said weekend(s) and City designated holiday(s)shall not be considered as satisfying the minimum of said 3 City working
weekdays in flashing mode.
The operational mode test period shall consist of a minimum of at least twenty (20) City working weekdays (each consisting of 24 hours). This period shall include the weekend(s) and
any City designated holiday(s) but, said weekend(s) and City designated holiday(s)shall not be considered as satisfying the minimum of said 20 City working weekdays in operational condition.
The warranty test period shall consist of a minimum of 365 days and shall include the weekends and City designated holidays.
Trouble Calls, Contractor
The qualified technician shall be on a 24 hour, 7 days a week call-up for trouble calls.
Trouble calls about improprieties about the system, received by the contractor from the City (including, but not limited to: traffic operations, police, fire, and the like), shall be
responded to by the qualified technician and/or the qualified technician shall dispensed said trouble call to a competent signal crew person(s) for correction.
Trouble calls are to be received such that the response personnel’s time to the site shall be not more than two (2) hours after the trouble call is issued by the City.
Upon arriving at the intersection, the response personnel shall:
Initiate actions so as to cause the intersection to be as safe as is reasonably possible to the public,
If new (not utilized prior to installation at the site) item(s) are involved in causing the condition, make appropriate correction(s)/ repair(s)/ replacement(s) as soon as reasonably
possible, but at no time greater than within 24 hours of notice,
If item(s) that are not new are involved in causing the condition, the response personnel shall:
Assess the situation for the type of work and equipment needed to properly correct the situation,
Immediately contact traffic operations @ 1-940-349.8462 or for non-normal City working hours @ 1-940-349.7000 so as to provide this information,
Maintain a presence at the location until appropriate City personnel arrive and relieve the response personnel.
All such activity shall be reported, in writing, to the City within two (2) City working weekdays of the event.
Trouble Calls, City First Response
Depending on the situation, the contractor recognizes that the City may choose to make a first response to a trouble call during a test period. Such action will in no way relieve the
contractor of trouble call responsibility. Action by the City of such a response may be limited to:
Turning the traffic control signal off or turning the traffic control signal to flashing mode,
Erecting temporary traffic control devices,
Traffic control by City police officer(s),
Other such action(s) deemed necessary to provide as safe a site as is reasonably possible.
Police Occupation of the Site
The contractor will make arrangements for City police assistance during the gathering in which the system is placed into the operational test period.
When conditions are such that it is determined by the City that the system is functioning in a manner that is not acceptable (improperly functioning) to the City and/or such that the
public is endangered (as determined by the City at that time), the police may occupy the site to provide acceptable conditions until the contractor occupies the site and resolves the
condition(s) sufficiently so as to be acceptable to the City.
The contractor, at the contractor’s discretion and at any time, may request police assistance.
All such police assistance shall be the financial responsibility of the contractor.
Test Mode Nonacceptance
If at a gathering for the beginning of a test period (including, but not limited to: flashing mode; operational mode; and/or warranty) and it is determined by the City that the system
is functioning in a manner that is not acceptable to the City,
The City may:
Endangerment of the public - if the situation is such that the test condition endangers the public (as determined by the City at that time), the City will disallow the continuance of
the test period and instruct the qualified technician to cause the system to be placed into a condition that is acceptable to the City.
Non-endangerment of the public - if the situation is such that the test condition does not endanger the public (as determined by the City), the City will allow for the continued preparation
for the beginning of the test period.
A test period “punch” list of each item(s) noted by the City as being not acceptable will be created by the City, in writing, and provided to the contractor for correction(s).
If the time required to correct the item(s) on the test period “punch” list is substantial (as determined by the City at the gathering), the City can leave the site and the qualified
technician will proceed with correcting the item(s) on the test period “punch” list. The procedure for the City’s review of the system for consideration of beginning the test period,
as provided for herein, may then continue.
If the time required to correct the item(s) on the test period “punch” list is not substantial (as determined by the City at this gathering), the City may choose to remain and the qualified
technician continue to correct the item(s) on said test period “punch” list to the satisfaction of the City. The procedure for the City’s review of the system for consideration of beginning
the test period, as provided for herein, may then continue.
“Punch” List(s)
A “punch” (may also be called a “punch”) list: the term as used herein shall be a listing of an inventory of item(s) that catalogs [in writing by the City and provided to the contractor
for correction(s)] all work and/or any component of the system that is not acceptable to the City, that is to be corrected by the contractor (under the direction of the qualified technician)
to the satisfaction of the City, the completion of which is necessary to begin the associated test period and/or for acceptance, by the City.
As many gathering(s) as necessary will be done to assure the completion of a “punch” list, in accordance with the provisions noted herein before beginning the associated test period
and/or acceptance, by the City, of the work.
Any work done by the contractor to satisfy a “punch” list’s requirement(s) may, as a result of said work, cause additional previously unforeseen requirement(s) to be added to said “punch”
list, by the City, for completion.
The City shall determine when an item(s) on said “punch” list has been resolved to the City’s satisfaction before beginning the associated test period and/or acceptance by the City.
The time required to correct the item(s) on a “punch” list will not be considered a part of the time associated with an applicable test period.
All work done by the contractor to complete a “punch” list shall be at the contractor’s expense and no extra compensation will be allowed for fulfilling the requirement(s) stated herein.
Test Mode Period Extension
The cause of a test period to be extended incrementally by the City shall be the result of the contractor not:
Properly responding to a trouble call and/or
Making the necessary repairs by the response personnel within the stated time referenced and/or
Providing required reports to the City.
Test Mode Period Acceptance
If at a gathering for the beginning of a test period (including, but not limited to: flashing mode; operational mode; and/or warranty) and it is determined by the City that the system
is functioning in a manner that is acceptable (properly functioning), the test period may begin and the City can then dismiss the contractor from the gathering.
Inspection(s) (stage #1 completion)
Once the contractor determines that the initial work necessary for the system is sufficiently complete for the flashing mode test period, the system can then receive a City inspection.
The qualified technician shall contact the City, as noted herein, for an inspection gathering.
At the inspection gathering, all work and the system necessary for the flashing mode test period to begin will be reviewed by the City to determine if the work is properly done and the
system will coherently function. If not acceptable, an inspection “punch” list shall be established and resolved by the contractor in accordance with the requirements as provided herein.
Once the City determines that all work and the system is sufficiently complete as a result of the resolution of any inspection “punch” list(s) by the contractor, the process may continue
to the flashing mode test period (stage #2 completion).
If there is no inspection “punch” list as a result of the inspection gathering, then the process may continue to the flashing mode test period (stage #2 completion).
Flashing Mode Test Period (stage #2 completion)
The flashing mode test period: the term as used herein shall consist of placing the traffic control signal into a flashing mode and then verify that all of the applicable energized components
are functioning properly in the flashing mode for the required period of time.
The qualified technician shall contact the City, as noted herein, for a flashing mode gathering, having satisfied all the requirement(s) of any inspection “punch” list.
At the flashing mode gathering, all work and the system necessary for the flashing mode test period to begin will be reviewed by the City to determine if the work is properly done and
the system will coherently function. If not acceptable, a flashing mode “punch” list shall be established and resolved by the contractor in accordance with the requirements as provided
herein. Once the City determines that all work and the system is sufficiently complete as a result of the resolution of any flashing mode “punch” list(s) by the contractor, the process
may continue to begin the flashing mode test period.
The qualified technician, upon permission by the City, shall place the traffic control signal into the type of flashing mode that is acceptable to the City, to begin the test period.
The method of placing the traffic control signal into the flashing mode shall be done in such a manner as to cause the least amount of inconvenience and/or endangerment to the public.
The City shall then again review all work and the system while in the flashing mode so as to determine if the work is properly done and the system is coherently functioning in the flashing
mode. If not acceptable, a flashing mode “punch” list shall be established and resolved by the contractor in accordance with the requirements as provided herein. Once the City determines
that all work and the system is sufficiently complete as a result of the resolution of any flashing mode “punch” list(s) by the contractor, the process may continue to begin the flashing
mode test period.
If, during the flashing mode test period, the City determines that any part of the system or the work performed is not satisfactory, a flashing mode “punch” list shall be established.
Any flashing mode “punch” list shall be resolved by the contractor in accordance with the requirements as provided herein. Once the City determines that all work performed to date as
well as the system is sufficiently complete in reference to the flashing mode “punch” list(s) the process may continue to the operational test period (stage #3 completion).
Depending on the type of new item(s) that are repaired/ replaced/ modified or the like by the contractor during the flashing mode test period, the flashing mode test period can be extended
by the City, to assure that said item(s) meet the minimum flashing mode test period requirement(s).
If there is no flashing mode “punch” list at the end of the flashing mode test period, then the process may continue to the operational test period (stage #3 completion).
The day of satisfactory completion of the flashing mode test period shall be determined by the City.
Operational Test Period (stage #3 completion)
The operational mode test period: the term as used herein shall consist of placing the traffic control signal into an operational condition (working colors) and then verify that all
of the applicable energized components are functioning properly in the operational mode for the required period of time.
The qualified technician shall contact the City, as noted herein, for an operational mode gathering, having satisfied all the requirement(s) of any flashing mode “punch” list.
At the operational gathering, all work and the system necessary for the operational test period to begin will be reviewed by the City to determine if the work is properly done and the
system will function coherently. If not acceptable, an operational “punch” list shall be established and resolved by the contractor in accordance with the requirements as provided herein.
Once the City determines that all work and the system is sufficiently complete as a result of the resolution of any operational “punch” list(s) by the contractor, the process may continue
to begin the operational test period.
The qualified technician, upon permission by the City, shall place the traffic control signal into the type of operational mode that is acceptable to the City, to begin the test period.
The method of placing the traffic control signal into the operational mode shall be done in such a manner as to cause the least amount of inconvenience and/or endangerment to the public.
The City shall then again review all work and the system while in the operational mode so as to determine if the work is properly done and the system is functioning coherently in the
operational mode. If not acceptable, an operational “punch” list shall be established and resolved by the contractor in accordance with the requirements as provided herein. Once the
City determines that all work and the system is sufficiently complete as a result of the resolution of any operational mode “punch” list(s) by the contractor, the process may continue
to begin the operational test period.
If, during the operational test period, the City determines that any part of the system or the work performed is not satisfactory, an operational “punch” list shall be established. Any
operational “punch” list shall be resolved by the contractor in accordance with the requirements as provided herein. Once the City determines that all work performed to date as well
as the system is sufficiently complete in reference to the operational “punch” list(s) the process may continue to the warranty period (stage #4 completion).
Depending on the type of new item(s) that are repaired/ replaced/ modified or the like by the contractor during the operational test period, the operational test period can be extended
by the City, to assure that said item(s) meet the minimum operational test period requirement(s).
If there is no operational “punch” list at the end of the operational test period, then the process may continue to the warranty period (stage #4 completion).
The day of satisfactory completion of the operational test period shall be determined by the City.
Warranty Period (stage #4 completion)
The warranty period: the term as used herein shall consist of a minimum amount of time in which the system is fully operational and functional while the traffic control signal is in
working colors.
The qualified technician shall contact the City, as noted herein, for a warranty gathering, having satisfied all the requirement(s) of any operational “punch” list.
At the warranty gathering, all work and the system necessary for the warranty test period to begin will be reviewed by the City to determine if the work is properly done and the system
is functioning coherently. If not acceptable, a warranty “punch” list shall be established and resolved by the contractor in accordance with the requirements as provided herein. Once
the City determines that all work and the system is sufficiently complete as a result of the resolution of any warranty “punch” list(s) by the contractor, the process may continue to
begin the warranty test period.
If, during the warranty test period, the City determines that any part of the system or the work performed is not satisfactory, a warranty “punch” list shall be established. any warranty
“punch” list shall be resolved by the contractor in accordance with the requirements as provided herein.
Depending on the type of new item(s) provided by the contractor repaired/ replaced/ modified during the warranty period, the warranty period can be extended by the City for the system,
as a whole or any portion thereof, to assure that said item(s) meet the minimum test period(s).
The day of satisfactory completion of the warranty test period shall be determined by the City.
Lighting Systems
Place the lighting system in operation for a 14 day test period. Burn the lighting system steadily for 48 hr. Then cycle the photocell or other control device for 12 days.
Pass a 14 day performance test of the lighting system.
Replace materials that are damaged or have failed before acceptance. Damaged illumination assemblies, except those damaged by the Contractor, and minor failures of lamps, ballasts, and
photocells are not cause for modifying or restarting the performance test.
Replace failed or damaged existing lighting system components when caused by the Contractor.
The City of Denton will relieve the Contractor of maintenance responsibilities upon passing a 14 day performance test of the lighting system and acceptance of the Contract.
CLOSEOUT ACTIVITIES
Final Acceptance
The date of acceptance of the site shall be determined by the City based upon the successful completion, by the contractor, of all required work of any “punch” list as well as the minimum
number of days of operation of each component of the system required of the City.
The completion of the warranty period shall not be final until the posted date of the letter of acceptance of the system and the work, from the City to the contractor, indicating that
the warranty period is complete and the contractor has no further obligations to the system for this project.
The successful completion of the warranty period will relieve the contractor of any future obligations to the system as of the date of posting of said letter of acceptance.
Penalties for Non-compliance
The City shall retain final payment to the contractor equal to a minimum of 25% of the total contract’s price. If any item required of the contractor is not completed by a date certain
established in writing by the City, the City will use said retainage as is necessary to complete the required work necessary to remedy the situation and shall deduct said cost(s) from
the retainage for final payment to the contractor.
PROTECTION
Prevent any property damage to property owner's poles, fences, landscaping, mailboxes, etc., and repair any damages.
Provide access to all driveways during construction.
Protect all underground and overhead utilities, including sprinkler systems, and repair any damages.
MAINTENANCE
While performing Work under this Contract, the Contractor bears the sole risk of loss for damages to or destruction of any traffic signal equipment or appurtenances, on equipment that
was not to be replaced or installed under this Contract, but which was damaged or destroyed through the fault or negligent acts of the Contractor.
The Contractor shall replace such damaged or destroyed equipment, etc., at no cost to the City, regardless of whether or not the damaged or destroyed equipment, etc., was a part of this
Contract or any warranties under this Contract.
The Contractor's responsibility shall cease under this paragraph upon written acceptance of an intersection by the City.
The Contractor's responsibility for full operation and maintenance of all traffic signal equipment shall begin when he starts any type of Work which effects active intersection control
at the first intersection and shall extend through the period of final Project acceptance of each intersection.
This maintenance responsibility includes existing controllers/masters, existing interconnect and cabling systems, existing signal indications, existing vehicle detectors, new controllers/masters,
new signal hardware, new cabling systems, and other hardware elements which are considered part of either the existing or the new traffic signal system.
It is recognized that the City may continue to make a first response to any trouble call. Action on such response will, however, be limited to placing the intersection on flash, replacing
load switches or detector amplifiers, erecting temporary control devices, requesting immediate traffic control by uniformed police officer, or other such action deemed necessary to
provide a safe operation.
Such action will in no way relieve the Contractor of his operation and maintenance responsibility.
The Contractor shall be required to notify the Inspector or Traffic Operations at least 24 hours in advance of any planned controlled change-outs or any other operational procedures.
CLEANING
Cast-in-Place Concrete
Defective Work
Imperfect or damaged work or any material damaged or determined to be defective before final completion and acceptance of the entire job shall be satisfactorily replaced at the Contractor's
expense, and in conformity with all of the requirements of the Drawings and Specifications.
Perform removal and replacement of concrete work in such manner as not to impair the appearance or strength of the structure in any way.
Cleaning
Upon completion of the work remove from the site all forms, equipment, protective coverings and any rubbish resulting therefrom.
After sweeping floors, wash floors with clean water.
Leave finished concrete surfaces in a clean condition, satisfactory to the City.
END OF SECTION