Modular Glare Screen System Art. 1085.01 normal to the plane of the icon surface under standard operating conditions. The LEDs shall not be aluminum gallium arsenide (AIGaAs) material technology. Transformers shall be rated for the line voltage with Class A insulation and weatherproofing. The sign shall be designed for operation over a range of temperatures from -35 to +165 °F (-37 to +75 °C). The LED module shall include the message plate, high intensity LEDs and LED drive electronics. Door panels shall be flat black and electrical connections shall be made via barrier-type terminal strip. All fasteners and hardware shall be corrosion resistant stainless steel.
d.Mounting Bracket. The mounting bracket shall be according to
Article 1078 — 01(f), except no terminal compartment will be required.
SECTION 1085. MODULAR GLARE SCREEN SYSTEM
1085.01 Description. The modular glare screen system shall be according to
the following.
a.Glare Screen Blades. The glare screen blades shall be constructed of durable, impact resistant, polymeric material meeting the following requirements.
1.Wall thickness of the blades shall be 0.10 in. (2.5 mm) minimum, except at corners where it shall be 0.06 in. (1.5 mm) minimum.
2.Specific gravity of the blade walls shall be 0.89 minimum as determined by ASTM D 792.
3.Tensile strength shall be 3000 psi (20,700 kPa) minimum as determined by ASTM D 638 (D 638M).
4.The blades shall be green in color.
5.The blades shall withstand a sharp bend test (90 degree bend without mandrel) at 0 ºF (-18 ºC) without cracking.
b.Base Plates and Rails. Base plates and rails shall be according to the following.
1.Polymeric Base Plate and Rails. Polymeric base plate and rails shall meet the same specific gravity and tensile requirements as the glare screen blades.
2.Metal Base Plates and Rails. Metal base plates and rails shall be according to ASTM A 36 (A 36M) and shall be galvanized according to AASHTO M 111 after fabrication.
c.Anchor Studs, Bolts, or Self-Tapping Screws. Anchor studs, bolts, or self tapping screws, with nuts, flat washers, or lock washers, shall be as Art. 1086.01 Electric Service Installation specified by the manufacturer and shall be galvanized or stainless steel according to Article 1006.29. ELECTRICAL SECTION 1086. ELECTRIC SERVICE INSTALLATION
1086.01 Electric Service Installation - Lighting.
a.Overhead Electric Service.
1.Service Pole and Appurtenances. The wood service pole shall include a guy and anchor and, if necessary, a meter socket.
2.Weatherhead. The weatherhead shall be designed to fit the service conduit size and galvanized according to AASHTO M 232. It shall be furnished with a composition cover with holes for the service cables.
3.Service Disconnect Switch. A heavy duty service disconnect switch shall be provided on the service pole. It shall be enclosed in a NEMA Type 4X watertight housing. The switch shall have an external lockable handle and shall provide for locking in either the “On” or “Off” position. Fuses and padlocks shall be included. Padlocks shall be keyed to match the District standard.
b.Underground Electric Service. When the underground electric service is ground mounted, it shall include a fiberglass above ground pedestal. When the underground electric service is pole mounted, the service disconnect switch shall be according to Article 1086.01(a)(3).
1086.02 Electric Service Installation - Traffic Signal.
a.Weatherhead. The weatherhead shall be designed to fit 1 in. (25 mm) threaded conduit, and galvanized according to AASHTO M 232. It shall be furnished with a composition cover with holes for service.
b.Circuit Breaker and Weatherproof Enclosure. The circuit breaker shall be single pole, rated 50 A, and mounted on an aluminum plate. The circuit breaker shall be contained in the stainless steel, weatherproof NEMA 4X enclosure of adequate size. The top and bottom of the enclosure shall be furnished with hubs for installing conduits. The enclosure shall be furnished with two padlocks, one for the handle and for the door when used in a Type A service installation. Each padlock shall be furnished with two No. 399 keyed alike keys.
c.Grounding. The grounding shall be according to Section 806.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 1082–1083 of 1,217. View official source ↗