MIL-HDBK-1027/1B
70 mm thick refractory and a vertical stainless steel plate in
accordance with Appendix A, Figure A-9 and should be designed
for a load of 295 kg per linear foot. No coaming should be
required around the outside perimeter of the training deck;
however, a safety rail should be provided. This rail should be
constructed of 38.1 mm steel pipe with two horizontal rails.
Horizontal rails should line up vertically to prevent personnel
from falling off the training deck. The safety rail should not
have any netting or webbing.
a) The training deck should consist of a 102 mm
lightweight heat-resistant concrete topping on a 6 mil
polyethylene bond breaker, on a concrete structural slab. The
topping slab should be designed to be sacrificial, provided in
sections, and capable of thermal expansion. Expansion joint
material should consist of a ceramic fiber blanket capable of
resisting temperatures of 1093 degrees C minimum. The training
deck elevation should be 2438 mm above grade to allow air access
to the underside of the fireplace and to allow space for the
electrical, foam, and storage rooms (each with a 2134 mm minimum
ceiling height) beneath. Where the training deck is located
above the first floor rooms it should be waterproofed. The
crawl space under the training deck should maintain 1829 mm of
clear height. There should be no doors leading from the ground
level rooms directly into the crawl space and utility
penetrations should be sealed airtight. Stairs should be
provided at three locations to afford personnel access to the
training deck. Additional ground access should be provided at
each foam training deck. The area under the foam decks and
stairs should allow free air access to the wire mesh covered
openings.
b) Walls between the first floor rooms and the crawl
space should be airtight. Any utility penetrations should be
sealed. This precludes propane from drifting into these rooms.
The crawl space should be bounded by two walls with floor to
ceiling wire mesh covered openings. The other two walls should
contain 4572 mm wide air tunnels with similar wire mesh covered
openings.
c) Columns used to support the perimeter of the
fireplace should be no greater than 5487 mm on center. These
columns should be located as indicated on the floor plan in
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