Design and Construction Handbook - Los Angeles World Airports

Guide Specification
4. Shall be surge suppressed.
5. Shall have a minimum of twelve (12) outlets – transformer spaced.
6. Power shall be hardwired.
E. Relay racks shall meet UL 1363 and 1449 requirements.
F. Vertical Cable Channel
1. Each rack will have an integral vertical cable channel with a minimum of 6 inches by 4
inches of channel space to facilitate the management of the cables entering the rack from
the cable tray.
G. There shall be horizontal and vertical cable management associated with all cabinets and racks.
H. The cable management products shall meet the following requirements:
1. Cable management panels shall be metal or plastic with integral wire retaining fingers.
2. Cable management panels shall have removable covers.
2.2 CABLE TRAY
A. Cable management and routing in all Telecommunications Rooms will be via 6 inch deep cable
tray (Chalfant Series 6 or equivalent) in widths as indicated on Drawings.
1. Cable tray shall be UL Classified as an equipment grounding conductor and shall meet
NEC Article 318-5.
2. Cable tray shall be louvered ventilated construction with louvered openings minimum 3
inches wide. Cable bearing surface shall be 3 inches wide. Openings shall be on 6-inch
centers with metal drawn downward so cables can drop out at any location along tray
without cutting or gasketing the openings.
3. All cable tray 90 degree elbows, cross fittings and tees shall have 3-inch diameter holes
punched out in them at a minimum spacing of 6 inches on center to allow for dropping
cables down at corners and tees to equipment below. Holes shall have rubber or hard
plastic gaskets installed inside the punched hole to protect cables from sharp edges.
4. Cable tray material shall be 304 stainless steel.
5. Cable tray hardware shall be 3/8 inch by 3/4 inch 302 stainless steel round head shoulder
bolts with serrated neck, SS hex nuts shall have an integral lock washer.
6. Cable tray shall be supported as follows:
a. Where tray is adjacent to TR wall it will be supported by Unistrut mounting
brackets as indicated in construction Drawings.
b. Where tray is suspended above equipment cabinets it shall be supported by a single
center support consisting of ½-inch threaded rod suspended from structure above
as indicated in construction Drawings.
1) Thread rod shall be fitted with a 6-inch PVC tube where it resides in cable
tray to protect cables.
2.3 UNSHIELDED TWISTED PAIR CABLE
A. Provide CMP rated 4-pair Category 6 UTP cable (orange in color) GENERAL 7131719 or
equivalent.
BASIC TELECOMMUNICATIONS REQUIREMENTS
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Communication Systems