6.6 Space Conditions
Main Equipment Rooms Electrical and
Telecommunications. The size of the Electrical Service
Room will depend upon the type of service provided by
the local utility. If a secondary (480V or 208V) service is
It is the joint responsibility of the architect and the
provided, the size of the room shall be approximated by
electrical designer, functioning as part of an integrated
the number of service stubs into the room and the
design team, to provide adequate space and suitable
respective number and size of switchgears. In this case the
locations for the electrical systems serving the facility, and
room must be located securely in a vault or inside the
a planned method to install and replace this equipment.
building along a perimeter wall at an elevation that
However, it is the sole responsibility of the electrical
minimizes the transformer secondary feeder lengths.
designer, during the concept phase, to provide detailed
Main switchgear room doors shall be large enough (width
space requirements and suggested preferred locations of
and height) to allow for the removal and replacement of
all critical space requirements for the power and
the largest piece of equipment. Both equipment and man
communication systems for the facility. It then requires
doors shall swing out and be provided with panic
the cooperation of the architect to provide the required
hardware.
space conditions, clear of any structural columns or
beams as well as shear walls, stairways, duct shafts and
The size and location of the Telecommunications Service
other obstructions. Equipment space selection shall take
Room shall be established in concert with the local
into consideration adjacencies, such as stairs, mechanical
telephone service provider and shall be provided with
rooms, toilets, elevators, air/piping shafts, and fire rated
24-hour HVAC service and protected from contaminants
assemblies to permit secondary distribution of electrical
by proper filtration equipment.
and telecom circuitry to exit the assigned spaces. In
addition, electrical equipment shall be located at a level
Electrical Rooms. Electrical rooms are generally located
above the 100-year flood plain.
within the core areas of the facility and shall be stacked
vertically. Adequate numbers of electrical rooms shall be
Note: The designers shall refer to Chapter 3: Architectural
provided such that no electrical room serves more than
and Interior Design, Building Planning, Placement of Core
930 m2 (10,000 sq. ft.). Electrical rooms shall be provided
Elements and Distances, for design criteria related to the
with minimum clear dimensions of 1800 mm by 3000 mm
following elements of the electrical and communication
(6 feet by 10 feet). If transformers are located in the rooms,
systems:
ventilation must be provided. Doors shall swing out.
Main Equipment Rooms
Electrical Rooms
also generally located within the core areas of the facility
Communications Rooms
and shall be stacked vertically. Rooms shall be sized to
Building Engineer's Office
contain adequate floor space for frames, racks and
Security Control Center
working clearances in accordance with (EIA/TIA)
Fire Command Center
standards. Provisions shall be made for air conditioning
these rooms.
UPS Systems and Batteries
184 F A C I L I T I E S S T A N D A R D S
FOR THE
PUBLIC
BUILDINGS
SERVICE
6.6 Space Conditions
Revised March 2005 PBS-P100
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