MIL-PRF-62272C(AT)
3.3.4 Frame. Main frame members shall be adequately braced to prevent permanent
deformation with the semitrailer statically loaded and the load distributed as specified in 3.2.1 and
table II. The maximum fiber stress in any frame members shall not be greater than 1/3 of the
material yield strength (see 4.5.1).
3.3.5 Weight. The semitrailer curb weight shall be no more than 16 000 lb (7256 kg).
When the semitrailer is loaded with any payload and distribution described in 3.2.1 and table II,
the load at the kingpin shall not be more than 25 000 lb (11 337 kg) (see 4.5.2).
3.3.6 Platform. The platform shall be constructed for securing fixed and movable
tiedown devices and side and rear racks. Stake pockets for the racks shall be located to provide
for at least a 90 in. (230 cm) clear load space width inside the racks for the entire length of the
load surface. The platform deck shall be completely covered extending from the rear of the
semitrailer with no protrusions or cutouts except those areas required for cargo securement
devices described in 3.4.18. The forward deck may be covered with a plate to reduce the profile
of the gooseneck area (see 4.5.2).
3.3.6.1 Deck. The deck shall not project above the side or rear rails, or shall be no more
than 0.25 in. (6.5 mm) below the top of the side or rear rails. The semitrailer deck shall present
no restrictions on the sides or end to the opening and closing of the doors of mounted containers
or to access by forklifts to tine pockets in pallets. The entire deck shall provide a continuous
surface for bulk cargo transport (see 4.5.2).
3.3.7 Cover plates. Removable plates shall cover exposed holes in the platform rails with
the racks and stakes installed in position (see 4.5.2).
3.3.8 Front panel. Each semitrailer shall be equipped with a combination of a front-end
structure and front panel. The front panel shall be of permanent construction and without
openings. The top portion shall fold rearward and in the upright position and shall be locked in
position to prevent loss (see 4.5.2).
3.3.9 Side and rear racks. The semitrailer shall be furnished with side and rear racks.
They shall be located in the stake pocket holes as shown in figure 2. A rail top section shall be
provided on each rack panel over the edge, which has openings to facilitate removal of each rack
by forklift trucks. The top of rack assemblies, with the rail top section shall be flush with the top
of the front panel. All sections shall be easily removable by one soldier and show no evidence of
warping, binding, or jamming. Any rack section shall be removable without removing any
adjacent rack section. All sections shall mate and fit so that locking device engage and disengage
freely. Interchangeability of racks with each other and between other M871 and M871A
semitrailers is required. The racks, when not in use, shall be capable of being stored and secured
on the semitrailer (see 4.5.2).
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