MIL-HDBK-1027/4A
enclosure. Steel should be avoided unless it is galvanized and coated with
high-performance epoxy paint. Doors separating the pool enclosure from the
rest of the building must be weatherstripped to effectively retard the flow
of vapor. Seal door frames to prevent moisture migration.
5.2.2.9
Thermal Insulation and Vapor Retarders. Locate vapor retarders
with care in view of the thermal differentials associated with extremely
humid interior environments. Vapor retardants must have a perm rate of 0.10
or less. Locate vapor retarder wall and ceiling systems to prevent damage to
structural and insulating elements and to seal the pool enclosure from
adjacent spaces in the facility. Seal all penetrations or junctures with
other materials where vapor retardation is jeapordized. Coordinate the vapor
retardant wall system with mechanical and electrical items such as
switchgear, piping, and ductwork. Indoor pools require significant room
ventilation to control indoor humidity caused by the large amount of
evaporation. The most effective method of controlling evaporation is to
cover the pool when not in use. See Figure 4.
5.2.2.10 Handicapped Design. Provide barrier-free access to civilian work
spaces and other spaces intended for public access. Design facilities to
locate handicapped access spaces on first floor only, unless the size of the
facility's administrative and other accessible areas requires a second floor.
Areas hazardous to handicapped persons need not be accessible. Comply with
the more stringent application of current criteria in either the Uniform
Federal Accessibility Standards (UFAS) or the Americans with Disabilities Act
Accessibility Guidelines (ADAAG).
5.2.2.11 Stairs, Ladders, and Rails. Avoid checkered plate treads where wet
traffic occurs. Components must resist corrosion from excessive moisture.
Provide Type 304 stainless steel with 18-8 stainless steel hardware for pool
access ladders and railings. Ladder clearance from face of pool wall should
be between 3 and 6 inches.
5.2.2.12 Elevators. Evaluate probable air moisture content in the elevator
environment and specify NEMA Type 4x components where practical.
5.2.2.13 Walls. Exterior masonry walls should be double wythe construction,
and the exterior surface of the inside wythe should be sealed with
dampproofing. Vapor migration calculations must be used to determine proper
placement of insulation and to control efflorescence on exterior brick.
Walls throughout the interior of the building must be masonry due
to the migration of moisture. Plaster and GWB are not acceptable for any
locations. Acceptable materials for the pool area include structural-glazed
or ceramic tile or glazed CMU, CMU with block filler and epoxy or urethane
coatings, all of which should be integrated with acoustical control elements.
The first 10 feet (3000 mm) of wall height should withstand general abuse and
enhance sanitation with consideration of rounded corners and appropriate
surface treatment.
5.2.2.14 Acoustical Control. Comply with DM 1.03, Architectural Acoustics.
Hard surfaces in pool training areas contribute to an extremely noisy
environment which is not conducive to a teaching function. Design to control
reverberation and echoes in the pool enclosure to ensure adequate speech
intelligibility for instructional use and safety.
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