UFC 3-580-10
14 July 2004
Including changes 12 April 2005
TABLE C-1 MINIMUM UNIFORMLY DISTRIBUTED LIVE LOADS AND
MINIMUM CONCENTRATED LIVE LOADS
OCCUPANCY UNIFORM UNIFORM CONCENTRATED CONCENTRATED
or USE
(kPa)
(psf)
(kN)
(lbs)
Offices
2.4
50
8.9
2000
4.8
100
8.9
2000
Computer
Rooms
(Business
Equipment
including TRs
& EFs within
NMCI POPs)
7.2
150
8.9
2000
Automatic
Data
Processing /
Telephone
Switch Rooms
(Including
NMCI POPs)
4.8
100
8.9
2000
Access Floor
Systems
Computer
Use
C-2.2
Equipment Grounding. Dedicated equipment grounding is
required. Telecommunications Ground Bar (TGB) size for Equipment Rooms
(ER's) and Telecommunications Rooms (TRs) is 50.8 mm high by 300 mm wide
by 3.4 mm tall (2 in x 12 in x in) minimum connected to building steel, or
equivalent. Bus bars are to be drilled with parallel holes to accommodate 2-hole
lugs. All grounding is to conform to ANSI/TIA/EIA standards. For converted
NMCI spaces when the building does not meet the standard, the
telecommunications backbone ground specified in TIA-J-STD-607 cannot be
met. Instead, equipment is grounded to chassis, chassis is grounded to the
cabinet and each cabinet is individually connected to the ground bar in its
respective TR by EDS as indicated in Figure C-2. The selected cabinets must be
UL listed and labeled for ground continuity. All equipment must be installed per
manufacturer's recommendations and remain securely fastened.
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