MIL-HDBK-1027/1B
c) During occupied hours, enclosed staging areas
should be heated to 10 degrees C and also should be ventilated
for summer heat removal. The staging area ventilation should be
the forced type so the pressure there is always above the
compartment pressure. This will ensure that the smoke stays in
the training compartments.
d) When roof staging areas and second story emergency
walkways are enclosed, a 1850 mm by 2450 mm high removable wall
panel in the staging area should be provided. This will allow
larger equipment to be hoisted during installation and
maintenance.
e) Staging areas should drain into the structure to
ensure that firefighting agents and rainwater are collected.
Staging areas should be provided with trench type drains.
Rainwater from roofs does not have to go to the crawl space.
3.2.4
Drainage. The area around exterior trainee entries to
a fire space should be provided with an apron which slopes to a
drain. The drain should lead to the wastewater treatment
system. This apron will collect the firefighting agent used to
cool the door prior to student entry and should be large enough
for that purpose. If the apron will be subject to collecting
rainwater, a pair of post indicator valves should be placed on
the drain line; one should lead to the storm drain, the other
should lead to the wastewater treatment. It will be the
instructor's responsibility to correctly position the valves so
the rainwater goes to the storm drain when the structure is not
in use and the training water goes to treatment when the
structure is occupied.
3.2.4.1
Drainage Piping Material. Because of exposure to heat
and AFFF, the drainage piping in the training structure should
be capable of withstanding 400 degrees C and should be
constructed of either copper or stainless steel. When piping is
not exposed to heat, PVC piping can be used.
3.2.5
Escape Trunks. Escape trunks should be 1550 mm on a
side and should descend from the roof to the first floor by way
of a vertical wraparound ladder. The roof entry should be a
small hatch and the lower entry should be an Ellison door. A
horizontal safety net should be stretched across the escape
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