MIL-HDBK-1027/1B
Caution: Wastewater piping leading from a crawl space
should be routed to a separation chamber prior to
discharging into the piping leading to the propane in
the piping. The separation chamber should be provided
as shown on Figure A-15 of Appendix A.
b) There should be 1372 mm of clear space between the
structure of the training floor and the crawl space floor,
unless noted otherwise. This area should remain clear of
obstructions to allow for burner tubes and burner equipment.
The perimeter of the crawl space should be as open as possible
for burner tube installation and access to ventilation air.
However, for heating, ventilating, and air conditioning (HVAC)
equipment placement, ductwork, and piping runs in the crawl
space, should be limited to a space 600 mm wide above the
louvers, along the exterior wall. Space in front of the crawl
space louvers should not be used, since it is the path of the
ventilation air. In addition, the heated supply air duct for
cold weather trainers can be located outside.
c) Personnel access should be provided to crawl space
areas. Ground level accesses should be ramped to facilitate
dolly traffic.
3.7.3
Staging Floor. The staging floor is the area where
the students are organized before starting a firefighting
sequence. The staging floor can be made of concrete or grating.
The concrete design should have generous slopes to channel away
water and collect it for treatment. If the area is exposed to
the rain, the collection piping should be configured to allow
rainwater to bypass the treatment system. The staging floor
should be designed to meet the following additional criteria:
a) A catchment should be provided by each trainee
door to ensure that the agent used by the trainee to cool the
door is directed to the treatment system. Rainwater should be
handled as stated above.
b) When the staging area is above a fireplace
compartment, as in the case of roof staging, the flooring must
be separated from the heat generated in the space below.
Galvanized steel grating should be provided in these areas. The
grating floor should be at least 508 mm above the concrete
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