Equipment Spaces. Mechanical and electrical equipment
Locker Rooms. Locker rooms shall be finished spaces.
rooms must be designed with adequate aisle space and
The shower area should be separated from the locker area.
clearances around equipment to accommodate mainte-
Regular gypsum wallboard is not to be used as a substrate
nance and replacement. Hoists, rails and fasteners for
for any shower room surface.
chains should be provided to facilitate removal of heavy
Custodial Spaces. Custodial spaces are devoted to the
equipment. The working environment in equipment
operation and maintenance of the building and include
rooms should be reasonably comfortable. Doors and
building maintenance storage rooms, stockrooms and
corridors to the building exterior must be of adequate size
janitor's closets. Custodial spaces shall be coordinated and
to permit replacement of equipment. This path (may
approved by building management.
include knock-out panels, hoists and provisions for
cranes) is necessary and must be demonstrated for
Storage Rooms. Storage rooms are utilitarian spaces.
equipment replacement. A minimum of 4 percent of the
Rooms may be any configuration that will efficiently
typical floor's gross floor area shall be provided on each
accommodate the materials to be stored. Access doors and
floor for air-handling equipment. A minimum of 1
aisles need to be large enough to move the stored ma-
percent of the building's gross area shall be provided for
terials. The configuration of storage rooms should be
the central heating and cooling plant (location to be
coordinated with the Facility Manager.
agreed upon during preparation of concept submission.)
Mechanical equipment room shall not be less than 3700
Janitor's Closets. Janitor's closets should be centrally
mm (12 feet) clear in height. All mechanical equipment
located on each floor near the toilet facilities and be
room must be accessible via a freight elevator at that level
directly accessed from the corridor, not by going through
for the purpose of operations and maintenance, and
the restrooms. They should accommodate all the equip-
replacement of equipment. The freight elevator must be
ment and supplies needed to service the area worked from
of a size to accommodate the largest component of the
the closet. All available space within the closet can be put
equipment. Ship's ladders are not permitted as a means of
to use to store gear and supplies. As a minimum, the
access to mechanical equipment. Mechanical equipment
service closet shall have a 600 mm (24-inch) square mop
rooms should not be less than 3700 mm (12 feet) clear in
basin, a wall-mounted mop rack, and 900 mm (3 feet) of
height. In some buildings special fire protection measures
250 mm (10-inch) wide wall shelving; the floor area
may be required. See Chapter 7: Fire Protection & Life
should be a minimum of 1.7 m2 (18 square feet).
Safety, for additional requirements.
Mechanical and Electrical Rooms. These spaces include,
All equipment spaces must be designed to control noise
but are not limited to, mechanical and electrical equip-
transmission to adjacent spaces. Floating isolation floors
ment rooms, enclosed cooling towers, fuel rooms, elevator
are recommended for all major mechanical rooms. See the
machine rooms and penthouses, wire closets, telephone
section Special Design Considerations, Acoustics, Design
frame rooms, transformer vaults, incinerator rooms, and
Criteria for Building Spaces, Class X Spaces of this chapter
shafts and stacks.
for noise isolation criteria.
Revised March 2005 PBS-P100