Technical Requirements -
Telephone/Data Spaces & Cable Pathways
5. For outlets in on-grade concrete floors in open areas not served by a raised
access floor or a hollow wall, the Contractor shall provide underfloor cable
pathways via conduit, under-floor duct, or a celled floor system imbedded in the
concrete with preset inserts. Power poles may be considered and approved
only by the Regional Office Director or his designated representative as an
alternate and should be considered if funding is limited.
6. Conduit between telephone/data closets on the same floor shall be sized to
house the number of conductors required, including future growth. In the
absence of guidance on the number of conductors needed, install a minimum of
one (1), four inch (4") conduit between closets.
7. Other conduits/sleeves or wire mold:
A. Install a minimum of one (1), two (2) inch conduit from the Telephone
Equipment (EAPBX) Room to the Telephone Console Room.
B. Horizontal cable runs between building cable entrances and Telephone
Equipment (EAPBX) Room.
C. For wiring and outlet box for wall-mounted pay telephone stations in corridors
and lobbies.
D. For wiring and outlet box for wall-mounted telephones.
demising partitions.
F. For wiring/cabling between radio/PA system equipment cabinets to nearest
telephone/data closet.
G. For wiring/cabling in tiled or masonry walls such as brick exterior walls, and
all locations where simple unobstructed cable installations are not readily
possible.
Cable Trays
Cable trays may be used as a means of running horizontal cable throughout each
floor of the office building. If used, cable trays shall be installed above the
suspended ceiling, over corridors or walkways in open office areas whenever
possible for ease of access. Cable trays shall have a minimum size of 12"x4". They
shall originate at the riser backboards and equipment racks in the Telephone
Equipment Room, T/D closets and in the computer room. For areas provided with
raised access floors, cable trays shall be installed under the access floor. If
necessary, walls, power poles, conduit or furred out chase columns shall be used to
provide a transition path from ceiling to floor.
VBA Design Guide
Page 4-23
Previous Page
