3831.1SCOPE
Provide mast arm poles in accordance with the Contractfor supporting mast arm mounted and pole mounted vehicle and pedestrian signal heads, and supporting luminaires, as part of a traffic control signal system.
3831.2REQUIREMENTS
A Mast Arm Poles Use mast arm poles of the type specified in the Contract including the following:
Use mast arm poles designed and constructed in accordance with AASHTO LRFD Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals and current interims.
B Mast Arm Use a 3/4 inch half-coupling and plug on the top side of the traffic control signal mast arm at the location specified in the Contract. If specified in the Contract, provide swing-away hinges with the traffic control signal mast arm. Obtain the Engineer’s approval before installation. Install the swing -away hinges so the traffic control signal mast arm swings away from the Intersection. B.1 Mast Arm Signal Head Mounts Mount vehicle signal heads on the extended end of traffic control signal mast arms using high-strength cast aluminum angle or straight plumbizer mounts and threaded hub and flange adapters. Only use threaded hub and flange pole adapters listed on the APL, Signals. If specified in the Contract, mount vehicle signal heads mid-arm on traffic control signal mast arms using straight plumbizer mounts as specified in this section. Only use straight mount plumbizers listed on the APL, Signals. Mount vehicle signal heads on the end of the mast arm using angle mounts as specified in this section. Only use angle mount plumbizers listed on the APL, Signals. B.2 Two-way Mast Arm Signal Head Mounts Mount two-way vehicle signal heads on the extended end of traffic control signal mast arms as specified in the Contract, using high-strength cast aluminum, two-way plumbizer mounts. Only use extended threaded pole adapters listed on the APL, Signals. B.3 Vertical Pole Signal Head Mounts Mount vehicle and pedestrian signal heads on the vertical pole using high -strength cast aluminum angle plumbizer mounts and threaded hub and flange adapters. Only use two way mount plumbizers listed on the APL, Signals. Only use threaded hub and flange pole adapters listed on the APL, Signals. If specified in the Contract, mount vehicle cluster head (dog house) style signal head assemblies on the vertical pole using angle plumbizer mounts with extended threaded pole adapters. B.4 Luminaires Provide LED Roadway Luminaires (40 foot mounting height) in accordance with 3810, “Luminaires,” and as shown on the Plans. B.5 Luminaire Wire Holder Provide wire holders listed on the APL, Signals.
3831.3SAMPLING AND TESTING
Submit four complete sets of shop drawings of the mast arm pole standard, anchor rods, in accordance with 2471.3C.1, “General,” and 2471.3C.3, “Submittal for Bridge Engineer's Review and
Acceptance,” to the Engineer for approval. After approval, the Engineer will distribute the drawings to the following:
TRAFFIC CONTROL SIGNAL PEDESTAL
3832.1SCOPE
Provide traffic control signal pedestals (base and shaft) that support vehicle signal heads, pedestrian signal heads, and warning flashers.
3832.2REQUIREMENTS
A Traffic Control Signal Pedestal Provide traffic control signal pedestals in accordance with the Contract. Provide traffic control signal pedestals meeting the applicable requirements for structural supports specified in AASHTO LRFD Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals and current interims. B Pedestal Shaft B.1 Aluminum Pedestal Shafts Provide aluminum pedestal shafts and hardware in accordance with the Contract. C Pedestal Base Provide pedestal bases for 4 inch pedestal shafts in accordance with the Contract. Provide traffic signal pedestal washers in accordance with the Contract. C.1 Painted Pedestal Base Shop paint pedestal bases on the inner and outer surfaces with two coats of prime paint in accordance with 3532, “Exterior Polyurethane Paint,” if specified in the Contract. Ensure the dried primer is 3 mil thick. Finish paint the outer surface with two coats of paint meeting the requirements of 3532, “Exterior Polyurethane Paint,” or the equivalent manufacture’s shop coat paint as specified in 2565.3V, “Painting.” Ensure the combined thickness of the primer and finish coats is 5 1/2 mil. Repair or replace pedestal bases scratched or damaged during installation as approved by the Engineer. C.2 Pedestal Base Access Door Provide aluminum pedestal access doors. C.3 Pedestal Cap Provide aluminum pedestal caps listed on APL, Signals. Provide pedestal caps for each pedestal shaft if using straight mount plumbizers for signal and pedestrian head mounting. C.4 Pedestal Slipfitter Collar Provide pedestal slipfitter collars manufactured as specified in the Contract.
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