00970.42 945 Section 00970 - Highway Illumination
Description
00970.00Scope - In addition to requirements of Section 00960, Section 00962, and Section 02926,
install highway illumination according to the following Specifications.
00970.02Equipment List and Drawings - Submit four copies of isocandela diagrams indicating the
vertical light distribution, vertical control limits and the lateral light distribution classifications for each type of luminaire submitted for approval.
Upon request, submit one copy of luminous intensity distribution data in IES format using electronic mail for each type of luminaire submitted with the following:
• Vertical angles - Provide data in increments of 5 degrees or less for the vertical angles of 0 to 90 degrees, inclusive.
• Horizontal angles - Use a maximum of 10 degree increments for all horizontal angles.
Complete description data is required.
00970.03Luminaire Submittal - Provide a sample luminaire for inspection and photometric testing
if required. Sample luminaires may be considered as part of the shipment furnished for installation.
Construction
00970.41Metal Light Pole or Tower Table - The metal light pole or high mast t ower table for the
Project is shown on the highway illumination Plans .
00970.42Cable and Wire - Use type XHHW stranded copper wire in all current -carrying conductors
in raceways. Support the conductors at the top of the pole using a flexible metal cable support grip to prevent insulation damage at the upsweep arm opening. When splicing cable into a new or existing circuit at a pole base (minimum wire length: 18 inches outside handhole), insta ll a watertight, in -line fuse holder in the pole base for each current -carrying wire going up the pole. This fuse holder shall be constructed so the wire to the ballast can be disconnected without cutting or disconnecting wiring at the ballast. Insulate terminal ends of the in -line fuse holder using either heat shrink tubing or electrical insulating rubber tape over -wrapped with electrical vinyl plastic tape as specified.
Use No. 12 AWG Type XHHW wire from the control cabinet to the photoelectric relay.
Use 3 conductor No. 10 AWG Type TC cable from the pole base to luminaire ballast. Use 2 conductors for luminaire ballast connection and 1 conductor for circuit grounding at the luminaire. Extend and securely connect electrical circuit grounding for each circuit connected to the luminaire end. For double arm illumination pole, two sets of wires shall be installed separately from the pole base to each luminaire end. Do not splice wires inside the illumination pole except at the pole base.
Wires from the ballast to the lamp holders shall conform to the manufacturer's recommendations.
Color coding of illumination circuits is required for three phase systems only. Ensure c olor coding of each phase conductor remains consistent throughout the entire electrical system.
00970.43 946 00970.43 Photocontrol Electronic Relay - Install the photocontrol electronic relay on either the control cabinet or on the metal pole as shown.
Use 1 1/4 inch welded hub in top of cabinet to install photocontrol electronic relay with minimum 24 inch long galvanized metal conduit and twistlock plug. When photocontrol relay is attached on the side of the cabinet, use LB type conduit outlet body, 1 1/4 inch galvanized metal conduit riser, and galvanized channel support for the riser. Riser conduit shall be minimum 2 feet above the top of the control cabinet. Secure field installed relay and conduit extensions against vandalism and ensure they are rain tight.
When photocontrol relay is installed on metal pole, use welded hub outlet located 180 degree from luminaire arm, threaded close nipple and 1 1/4 inch LB type conduit outlet body. Locate the hub 30 feet above b ase plate or as shown.
Mount the relay away from adjacent luminaires , and orient the light sensitive relay's window to the northern sky. Mark the date of installation on the bottom of the photocontrol electronic relay.
00970.44HID Luminaires - Level luminaires on the upsweep arms in both the transverse and the
longitudinal direction, as recommended by the manufacturer. On Roadway grades greater than 4 percent, orient luminaires on the upsweep arm so that the light beams strike the Pavement equidistant from the luminaire.
from the top of the nearest edge of Pavement to be lighted to the center of the luminaire.
with a sharp instrument.
type with a N EMA-approved decal on each luminaire as specified below. Apply decals on clean and prepared surfaces. Use decals that provide a durable, legible surface for the life of the luminaire, and:
• Are at least 3 inches square. • Are made of noncorrosive, pressure sensitive Material. • Have a colored background with black numbers as shown in Table 00970-1. For pole- mounted luminaires, install the decals on the bottom side of the luminaire or on the arm adjacent to the luminaire, whi chever is more visible, as directed. For wall -mounted luminaires, install the decals vertically on the luminaire housing or adjacent to the luminaire on the wall, as directed.
For pendant -mounted luminaires, install the decals horizontally on the ballast housing or externally at the top portion of the reflector if a remote ballast installation.
conform to the following:
00970.50 947 Tables 00970-1 A and 1 B - Lamp Decal Code High I ntensity Discharge Lamps
TABLE 00970-1 A TABLE 00970-1 B Lamp Identifying Lamp Background Wattage Number Type Color 50 5 70 7 Phosphor -Coated Mercury White 100 10 150 15 High Pressure Sodium Gold - Yellow 175 17 200 20 Clear Metal Halide 1 Red 250 25 310 31 Phosphor -Coated Metal Halide 1 Green 400 40 750 75 Induction Lamp Orange 1000 x1
1 In addition, metal halide lamp targets shall include a 1/2 inch wide by 3 inch long strip of pressure sensitive, flat top, wide angle reflective tape to show lamp burning position requirements. Apply tape 1/2 inch from the lamp size target as follows: Lamp Burning Position Target Color
Any position None Base up to horizontal None Base down to horizontal Gold Position-oriented- mogul socket (POM) Red
00970.45LED Luminaires - Install LED luminaires as shown or as specified
00970.46Pole Identification - Identify luminaire poles with a numbered label corresponding to the
pole numbers on the highway illumination Plans . Labels shall:
• Be made of noncorrosive, pressure-sensitive Material suitable for outdoor use and resistant to fading and abrasion. • Have blue or black numbers with a high-contrast colored background. • Have 1/4 inch block numbers at least 2 inches high.
Install labels on poles so they are visible from a passing vehicle.
00970.47HDPE Conduit and Connectors - High Density Polyethylene (HDPE ) conduit may be
used for horizontal directional drilling (HDD) applications. Provide HDPE conduit that is orange in color. Join HDPE conduit sections by mechanical fittings that have barbed threads on both ends or by a swedge coupler with two- part conduit adhesive.
The maximum length of the continuous single section of HDPE conduit installation is 250 feet.
Use woven polyester pull tape on all HDPE direct -bore installations for all brushing and mandrel proofing of the conduit. Provide a single continuous non- spliced run of tape within the conduit.
00970.50Grounding and Bonding - In addition to the requirements of 00960. 45 and 00962.50,
ground and bond metal illumination poles and high mast towers according to the following: 00970.60 948 Install 1 -inch nonmetallic conduit from the pole base to the concrete and polymer concrete junction box at each pole. Install a ground rod in each junction box and install No. 6 AWG copper ground wire from the ground stud in the pole base to the ground rod in the j unction box. The ground rod may be installed in the same junction box that provides illumination circuitry to the pole, if a separate and independent conduit is installed for the ground wire. Bond all metal conduit and metal junction box covers, if used, together to the ground rod.
On the inside of high mast tower shafts, weld a 1/2 inch Type 308, 309, or 310 threaded stainless steel stud for a grounding lug. Locate the grounding lug 90 degrees from and level with the bottom of the handhole.
Maintenanc e
00970.60Maintaining Existing and Temporary Illumination Systems - Protect existing
illumination systems and approved temporary replacements. Shutdown of a system may be allowed for alterations or final removal, as approved. Lighting system shutdowns shall not interfere with the regular lighting schedule. Notify the Engineer before performing any Work on existing systems.
Determine the exact location of existing conduit runs and pull boxes before using Equipment that may damage such facilities or interfere with any system.
Where Roadways are to remain open to traffic and existing lighting systems are to be modified, keep the existing systems in operation until the final connection to the modified circuit is made. The modified circuit is to be complete and operating by nightfall of the same Day the existing system is disconnected.
Finishing and Testing
00970.70Field Test - Operate the completed lighting system or subsystem continuously
for 7 consecutive Days and an additional 7 Days normal burn afterwards. When the lighting performance is satisfactory, the Contractor may be relieved of maintenance responsibility according to 00170.80(b). Before completing the Work , conduct the following tests on all lighting circuits in the presence of the Engineer.
• A Megger test on each circuit between the conductor and ground with all switchboards, panelboards, fuse holders, switches, receptacles and overcurrent devices in place. Record all readings. Furnish the Engineer with one copy of the test results identifying observed readings with their respective circuits. • Test the insulation resistance between conductor and ground. Resistance shall be as follows on circuits with total single conduction length of: • 2,500 feet and over - at least 6 M Ω • Less than 2,500 feet - at least 8 M Ω
Measurement
00970.80Measurement - No measurement of quantities will be made for Work performed under this
Section.
The estimated quantities of lighting poles and arms are listed on the Project Plans . If individual pole lengths or individual arm lengths increase or decrease by more than 3 feet from the estimated quantities shown, adjustments to the Contract lump sum amount for the item "Lighting Poles and 00970.92 949 Arms” will be made according to 00190.10(h). Adjustments will be made only for the increased or decreased individual pole lengths or individual arm lengths greater than 3 feet.
Payment
00970.90Payment - The accepted quantities of Work performed under this Section will be paid for
at the Contract unit price, per unit of measurement, for the following items: Pay Item Unit of Measu rement
Item (a) inc ludes all concrete foundations for lighting poles.
Item (b) includes all poles and arms for lighting poles.
Item ( d) includes all switches, conduit, cabinets, wiring, delineators, junction boxes, and other items required to construct the lighting system as specified.
Item ( e) includes all refurbishing, reinstalling, and other Work as specified and not included in the removal of existing illumination.
Payment will be payment in full for furnishing and placing all Materials, and for furnishing all Equipment , labor, and Incidentals necessary to complete the Work as specified. No separate or additional payment will be made for labeling the luminaires or poles.
If shown or specified as part of the Work for concrete Bridges or retaining walls, all conduit, junction boxes, cabinets, and other items permanently attached to or encased within concrete Bridges and retaining walls, as well as pole foundations inc orporated into a Bridge or wall, will be included in payment made for the appropriate Bridge and wall items.
00970.92Electrical Energy Costs - All electrical energy costs for the lighting systems or
subsystems will be paid for by the Agency.