5.1
Provide membrane waterproofing under floor finishes surrounding
floor drains in areas subject to wet conditions to prevent water
and moisture from penetrating the underlying floor slabs and
damaging the finishes and contents of the rooms or spaces below.
Attach the membrane waterproofing to the floor drain by a clamp,
extend outward from the floor drain under the entire area of the
surrounding floor finish surface or concrete topping which slopes
toward the floor drain or which is subject to surface water, and
carry up abutting vertical surfaces at least 75 mm (3").
5.2
Exceptions.
Do not provide membrane waterproofing if:
a.
The floor slab is placed on grade, or
b.
The floor finish itself is latex mastic with waterproofing
membrane.
6.
PIPE BASEMENTS:
6.1
Evaluate the use of full or partial pipe basements on an
individual project basis through a design analysis that indicates
that a pipe basement is the most efficient and economical method
of adapting piping, duct, and electrical conduit systems to the
building. Design pipe basements to provide a minimum clearance of
1200 mm (4'-0") under pipes, ducts, and electrical conduits for
access to these systems for maintenance and repair. Provide all
areas of a pipe basement with two means of egress. Extend
stairways down to the pipe basement by means of industrial stairs.
6.2
CONSTRUCTION:
a.
Insulate the exterior walls to prevent freezing temperatures
in the pipe basement for locations where ambient temperatures
are -7C (20F) or below.
b.
Provide access to the pipe basement at stairwells and
emergency egress to the exterior through the use of areaways
where necessary.
6.3
HEATING AND VENTILATION:
a.
Provide thermostatically controlled mechanical ventilation to
prevent excessive rise in basement temperature and/or prevent
moisture problems.
b.
Provide intake louvers with dampers of sufficient size to
satisfy fan requirements.
c.
Screen ventilators and louvered openings to prevent entry of
insects and small animals.
d.
Provide heating in the pipe basement or insulate the slab or
both as dictated by design computations for maintaining slab
at 21C (70F).
7.
FLOOR SLAB DEPRESSIONS:
7.1
Floor slab depressions are required in specific areas or rooms for
the purpose of providing slopes in floors to:
a. Direct water into drains
b. Insure that the floor of prefabricated rooms and access
floors are level with the corridor floor
c. Provide clearance for equipment
Previous Page
