14-22 Install cast- metal barrier rail (BR) and/or sidewalk (SW) boxes and arrange conduits and
ducts to best fit field conditions. During the construction of the concrete reinforcement, accurately space and s ecurely attach Type BR and Type SW junction boxes and conduits inside the reinforcement. Bond junction box to the reinforcement in accordance with NEC
Article 250 — 52. Place boxes with covers flush with surface of concrete. For median barrier
installation s, install Type BR junction boxes so that the face of each box is on the same side of the road as the serving lighting control system. Place mastic between the cast metal box frame and the cast concrete barrier, as shown on plans to allow easy replacement of the frame. Install a Control System Junction Box (CSJB) meeting the requirements of this section and sized as shown in the plans within 2 f eet of the edge of the concrete pad in front of each Control System . Install a High Mount Junction Box (HMJB) meet ing the requirements of this section and sized as shown in the plans 10 feet from each high mount foundation. Position the junction box for best routing of underground circuitry. The HMJB is used as a tee point for circuitry to the high mast standard. For single arm or twin arm light standards installed in grassy areas, provide a light standard junction box (LSJB) meeting the requirements of this section and sized as shown in the plans. Install the LSJB 5 feet from the standard foundation. The LSJB shal l be placed parallel to, or behind the light standard foundation, as viewed from the roadway. The LSJB is used as a tee point for circuitry. Install a ground rod in the HMJB and the LSJB . Permanently attach grounding conductor from light standard to groun d rod in junction box via an irreversible compression ground connector . Record the precise GPS location of all junction boxes in the junction box summary on the plans. Submit the list of junction box GPS locations to the Engineer and include this list in the print pocket of the lighting control system. 1411 -4 MEASUREMENT AND PAYMENT Electrical Junction Boxes ____ will be measured and paid as the actual number of the appropriate type and size junction boxes installed and accepted. Payment for the conduit, duct and wiring will be paid under other contract items. Covers, washed stone and items used for splicing are incidental to the junction boxes. Payment will be made under: Pay Item Pay Unit Electrical Junction Boxes ____ Each 1412 -1 DESCRIPTION Furnish and install wall mounted (WM) and/or pendant mounted (PM) luminaires with electrical circuitry, for underpass lighting at locations shown in the plans. Work includes, but is not limited to, furnishing and installing underpass luminaires with LED light sources , internally mounted driver and mounting hardware as well as furnishing and installing circuit breakers and enclosure with photocell receptacle , pull boxes, conduit, conductors, expansion fittings, anchors, straps and ground rod. 1412 -2 MATERIALS Refer to Division 10.
14-23 Item Section
Conduit 1091 -3 Wire and Cable 1091 -2, 1400 -2 Use luminaires that are listed as “Suitable for Wet Locations” according to UL Standard 1598, with sealed LED light engine assemblies. Use electronic drivers that are completely pre- wired integral units, for reliable operatio n of LED light engine(s) at -40°F ambient temperature. Use the luminaire type, wattage, voltage, correlated color temperature (CCT) and IES illumination distribution pattern as shown in the plan s. Provide Type WM luminaires that are wall mounted, with cast aluminum housing painted with premium quality gray or dark bronze paint. Use the same color Type WM luminaires throughout the project. Provide a prewired driver assembly which is thermally isolated from the LED light engines. Provide factory installed mounting holes in the back and conduit entrances in the sides and top. Provide a cast aluminum hinged door and a sealed glass lens covering the LED light engines . Provide preinstalled, modular LED light engines. Provide Type PM luminaires that are a pendant mounted assembly of driver , optical and mounting components, including a safety chain and hanging hardware. Provide a die -cast aluminum driver housing with gray paint finish, with a prewired driver assembly and an electrical receptacle for attachment of hanging hardware. Provide sealed, directional LED light engines covered by a glass refractor . Use a 3/4 inch rigid galvanized steel conduit with a hook and power cord entrance as the pendant. Provide a 3 -conductor Type SO OW power cord and a 3/4 inch female threaded wiring compar tment to attach the driver housing to the pendant as shown in the plans. Use galvanized weldless forged steel eye- nuts that comply with Federal Specification WW -H- 171E (Type 17), or Manufacturers Standardization Society SP -69-2003 (Type 17). Attach eye nu ts to galvanized steel or stainless steel threaded rod anchored to the bridge deck with adhesive anchors. Use galvanized steel or stainless steel safety chain, S-hooks and lock nuts. Use conduit and wire in accordance with Article 1400 -2 and gasketed PVC junction boxes as shown in the plans. Use a 2 -pole, 15 A circuit breaker with an interrupting capacity of at least 14,000 A , installed in a NEMA 3R enclosure. Circuit breaker shall be rated for the voltage shown in the plans. The enclosure should be primed and painted with a premium grade exterior paint before installation to increase corrosion resistance. Install an equipment ground bar and provide a lock in accordance with Article 1400 -8. Provide a 7- pin photocontrol receptacle securely mounted to the enclosure. 1412 -3 CONSTRUCTION METHODS Mount luminaires as shown in the plans. Use galvanized steel or stainless steel clamps and attachment hardware. Install circuitry in accordance with Article 1400 -4. Install the photocontrol receptacle either directly to the top of the enclosure, or use a standoff bracket. If a standoff bracket is used, the conductor from the photocontrol receptacle to the disconnect panel shall be enclosed and secured in liquidtight flexible metallic conduit. Install a shorting cap on the photocontrol receptacle. 1412 -4 MEASUREMENT AND PAYMENT Underpass Luminaires , Type ____ will be measured and paid as the actual number installed and accepted. Underpass Circuitry at ____ will be paid at the contract lump sum price for underpass circuitry at the appropriate location.