Technical Requirements -
Computer Room
at the same equipotential ground level. The floor's bolted stringer system can be
used as the ZSRG in accordance with the IEEE Emerald Book and FIPS Pub 94.
Acoustical Ceiling
Ceiling height shall be 8' above raised floor. Ceiling will be a suspended,
acoustical ceiling. The ceiling will provide a minimum noise reduction coefficient of
NRC 55. Ceilings shall have a flame spread of less than 25 and a smoke
development ratio of 50 or less (ASTM E-84). Specify ceiling tiles that provide a
vapor barrier and are not affected by room relative humidity of 60% or less.
Fire Protection
Detection, alarm and suppression systems including smoke detection, automatic
water mist or wet pipe sprinkler systems and associated electrical power off
controls shall be installed in accordance with NFPA code, VA Fire Protection
Design Manual and VHA directive 97-021, "Phase Out of Halon Fire Extinguishing
Agents and Halon Portable Fire Extinguishers"(expires 9/30/2000.) Smoke
detectors are required both under the raised floor and ceiling mounted below the
acoustical ceiling. The detectors should be configured in either a "cross - zone" or
"verified" detection scheme to reduce the probability of false alarms. Systems must
be UL approved or equal.
Lighting
Lighting level must be provided at 70 foot candles at the work surface height during
working hours, measured at 30" above finished floor (AFF.) Install 2' x 4' dual
electronic ballast lighting fixtures (3 or 4 bulb F32T8 lamps). This will allow for
adequate light for service and operations personnel while providing reduced lighting
levels for energy conservation when the room is not occupied.
Emergency, battery powered, wall mounted lighting fixtures shall be installed and
placed at 15' intervals along the walls and at exits in accordance with NFPA 75.
UPS/PDU
The uninterruptable power system (UPS) and connected power distribution unit
(PDU) are essential equipment in a VBA computer room. The Regional Office
VBA Design Guide
Page 4-5
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