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Provide as specified in Section 02582 ELECTRICAL MANHOLE AND HANDHOLE.
3.4
EARTHWORK
Provide excavation, backfilling, and reconditioning of surfaces as
specified in Section 16302N UNDERGROUND TRANSMISSION AND DISTRIBUTION.
3.5
GROUNDING
Ground non-current carrying metallic parts associated with electrical
equipment as specified in Section 16302N UNDERGROUND TRANSMISSION AND
DISTRIBUTION.
3.6
CABLE MARKERS
Provide cable markers or tags for each cable at duct entrances entering or
leaving manholes or handholes and at each termination within the lighting
vault. Tag cables in each manhole or handhole with not less than two tags
per cable, one near each duct entrance hole. Immediately after cable
installation, permanently attach tags to cables and wires so that they
cannot be accidentally detached.
3.7
FRANGIBLE REQUIREMENTS
Install frangible supports, couplings, and adapters as indicated and
specified. Install with the type conduit indicated.
3.7.1
Approach System Frangibility
At the 305 meter 1000 foot cross bar and beyond, mount approach lights up to
1830 mm 6 feet above concrete foundation on threaded frangible couplings
and 53 mm 2 inch electrical metallic tubing (EMT). For mounting heights
greater than 1830 mm 6 feet, install approach lights on low-impact
resistant frangible towers.
3.8
ELEVATED AIRFIELD LIGHTS
Frangibly mount normally not exceeding 355 mm 14 inches in height unless
higher mounting is permitted in snow accumulation areas. Frangibly mount
equipment exceeding 355 mm 14 inches in height as indicated.
3.9
SEMIFLUSH AIRFIELD LIGHTS
Remove water, debris, and other foreign substances prior to installing
semiflush light base and light.
3.10
WIRES, FIXTURES, AND ENCLOSURES IN SAW KERFS OR DRILLED HOLES
Sealant is specified in paragraph entitled "Sealing Fixtures and Wires in
Drilled Holes or Saw Kerfs."
3.10.1
Holes for Light Fixtures
Bore holes in pavement to dimensions indicated. Use a diamond-edged bit to
provide a smooth, straight cut. Bottom of hole shall be flat or slightly
concave, except that an area at least 25 mm one inch wide around the
perimeter shall be flat. Fill surfaces deeper than the prescribed depth
SECTION 16522N
Page 34
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