TRAFFIC SIGNAL HEADS SECTION 1075 750 F. Equip the top and bottom of the housing with an opening to accommodate standard 1 1/2-inch nominal diameter pipe and a Shurlock boss integrally cast into the housing.
G.Equip the housing with hinges, as lugs cast onto the side of the housing or inside the housing, and locking devices for the door.
H.Provide a one -piece, corrosion resistant, aluminum alloy die -casting, in black (federal standard color number 595B -17038) housing door for each section. Provide 2 hinge lugs cast on 1 side of the door and 2 latch points cast on the other side. Attach th e door to the housing by means of 2 straight pins. Equip the door with 2 eye bolts and wing nuts on 1 side to allow the door to open and close without the use of any tools. Provide a gasket groove on the inside of the door to accommodate a weatherproof and mildew -proof resilient gasket which, upon closing the door, seals against a raised bead on the housing, making a positive seal. Equip the outer face of the door to have 4 holes equally spaced about the circumference of the lens opening, with 4 screws to accommodate a signal head visor. Equip the door to have at least 2 index points to enable positive orientation of the lens.
1075.11 Visors.
A.Provide visors, full circle, tunnel, or cap, as shown in the contract; formed of corrosion -resistant aluminum alloy sheet not less than 0.05 -inch in thickness. Provide visors with a minimum of 7 - inches in length for nominal 8 -inch sections and 9 1/2-inches in length for nominal 12-inch sections, with a downward tilt of 3 -1/2 degrees . Equip visors with twist -on attaching slots so that removal occurs by simply loosening, not removing the mounting screws and rotating the visor.
B.Coat visors, both inside and outside, with flat black meeting federal standard color number 595B - 37038.
1075.12 Banding Hardware.
A.Provide BAND -IT 3/4 -inch, 0.030 -inch thickness, stainless steel banding material and 3/4 -inch stainless steel buckles, per contract for signal head mounting.
1075.13 Pedestrian Signal Housing.
A.Provide each pedestrian signal display housing consisting of a yellow case housing, complete with a black housing door, field terminal assembly and visor. Provide housing with the maximum overall dimensions not exceeding 18.5 -inches wide by 18.7 -inches high by 9.1 -inches deep including visor.
B.Provide a one -piece housing of a corrosion resistant aluminum alloy die -casting free of defects such as cracks and burrs, in the color yellow, federal standard 595B -13538. Equip the housing with top and bottom openings to accommodate 1 1/2-inch pipe brackets and have a Shurlock boss, or approved equal, integrally cast into the housing. Provide positive 5 -degree increment positioning of the entire signal display to eliminate rotation or misalignment of the signal display with radial angular grooves of the Shurlock boss, when used with Shurlock fittings. Equip the housing with 2 integrally cast hinge lugs and screw slots on each side. Provide a housing capable of providing a swing down housing door.
C.Provide a one -piece housing door of a corrosion resistant aluminum alloy die -casting in the color black, federal color 595B -17038. Equip the housing door with 2 hinge lugs cast on top, and 2 latch points cast on the bottom. Attach the door to housing by 2 hinge pins. Provide 2 eye bolts and TRAFFIC SIGNAL HEADS SECTION 1075 751 wing nuts for opening and closing the door without the use of special tools. Provide a gasket groove on the inside of the door to accommodate a weatherproof and mildew proof resilient gasket which, upon closing the door, will seal against a raised bead of the housing, making a positive seal.
D.Equip the field terminal assembly with a 3 terminal pair (6 screw) type terminal block for termination of the 3 field #14 AWG spaded terminal wires for AC (+) for the “hand” and “person” icon and AC ( -). Equip the side of the terminal with a male quick disconnect blade that mates with the insulated female quick disconnect lug supplied on the LED module. Bolt an aluminum base plate to the signal display housing for the field terminal assembly.
E.Design the visor to eliminate sun phantom and minimize damage to the LED module and provide in flat black, federal color 595B -37038. Install the visor parallel to the face of the signal display, held in place by stainless steel screws. Provide the visor assembly with a minimum of 20 straight louvers and 21 zigzag pattern horizontal louvers.
F.Before assembling, thoroughly clean all aluminum elements and apply a chromate conversion coating inside and outside as per military specification MIL -DTL-5541. Electro -statically apply a synthetic enamel conforming to military specification TT -E-529. P rovide finish, oven cured for at least 20 minutes at a temperature of 350 degrees F. Supply the signal display housing in yellow with a black door. Provide a dustproof, weatherproof, and corrosion resistant signal display as installed.
G.Provide all materials required to mount the LED countdown signal assemblies in accordance with the contract.
1075.14 LED Pedestrian Pushbutton Assembly.
A.Provide pedestrian pushbutton assembly conforming to all minimum size requirements set forth by the Americans with Disabilities Act (ADA). Design the pushbutton assembly to prevent electrical shock under any weather conditions and have provisions for gr ounding in accordance with the NEC. Supply each pedestrian pushbutton assembly to include the pushbutton housing complete with front cover and a push button switch. Equip the LED pushbutton assemblies with a LED/audible indicator. Supply any control equipm ent necessary for the pushbutton assemblies to operate as specified at no additional charge. Assume an average of 6 pushbutton assemblies per intersection for the purposes of distributing control equipment costs. Supply control equipment to fit into a stan dard traffic signal control cabinet.
B.Supply the pushbutton housing in yellow (color number 595B -13538) cast aluminum. Design the rear of the housing curved and to accommodate pole diameters from 3 inches to 14 inches, with a 1/2-inch diameter access hole for wiring at the rear of the housi ng. Cap the access hole with a plastic plug. Equip the housing at the front to allow for mounting of the front cover.
C.Supply the front cover in yellow (color number 595B -13538) cast aluminum. Provide a weather - tight seal between the housing and the cover using a neoprene gasket. Secure the cover and the pushbutton switch to the housing with stainless -steel, vandal -resistant screws.
D.Provide weatherproof and tamperproof, pushbutton switches to be actuated by a 2 inch diameter mushroom plunger. Use a spring installed between the plunger and the switch that has an operating force of no more than 5 pounds. Provide a moisture barrier be tween the plunger and the switch and a 2 -position terminal block for termination of the #14 AWG pushbutton wire. Provide a pushbutton switch capable of operating in at temperature range of -30 degrees F to
Source: Delaware Standard Specifications for Road and Bridge Construction, 2025 Edition. Pages 760–761 of 779.