MIL-PRF-44408C
to meet the requirements of 3.2.6 both during the test and subsequent removal of
the load shall constitute failure of this test.
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4.2.7 Floor loads. The shelter's floor shall be uniformly loaded to 65 lb/ft
for 30 minutes. Prior to removal of the uniform load, all moveable parts shall be
operated to ensure no interference exists between components. After completion of
the above test, the uniform load shall be removed and a concentrated 1000 lb load
shall be applied over a 1 foot (ft) by 2 ft area centered on the floor and left in
position for 30 minutes. The 2 ft dimension shall be parallel to the shelter's
sidewall. Prior to removal of the concentrated load, all movable parts shall be
operated to ensure no interference exists between components. After completing
both of the above tests, the concentrated load shall be removed and a load of 125
lb, balanced atop a 1 square inch (in2) block, shall be applied for 5 minutes to
the center of the floor. Failure to meet the requirements of 3.2.7 shall
constitute failure of this test.
4.2.8
Door.
4.2.8.1 Door handle. The shelter door shall be securely closed. A 48 lb load
shall be applied to the door handle in the direction which best facilitates
opening the door. After it has been verified that 48 lb is adequate to open the
door, the door shall be closed and a 48 lb force applied in the direction which
best facilitated the securing of the door. After it has been verified that 48 lb
is adequate to secure the door, the outer door handle shall be locked and the
above procedure shall be repeated. Failure to meet the requirements of 3.2.8.1,
shall constitute failure of this test.
4.2.8.2 Door structure and hinge assembly. The door
shall have a 200 lb static
load applied parallel to the hinge line, along the door
edge opposite the hinge,
with the door open to 90 degrees. After 30 minutes the
load shall be removed and
the door examined. Failure to meet the requirements of
3.2.8.2 shall constitute
failure of this test.
4.2.8.3 Door stop. This test shall be performed with the door in the open
position, held by the door stop mechanism. A fixture shall be attached to the
midpoint of the edge of the door opposite from the hinge which shall permit the
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application of a load equivalent to 10 lb/ft times the largest surface area of the
door, normal to the door's surface, using free running pulleys and a 1/4 inch
diameter steel cable to transmit the load. Failure to meet the requirements of
3.2.8.3 shall constitute failure of this test.
4.2.8.4 Door maintainability. The door shall be inspected to ensure compliance
with 3.2.8.4. Failure to meet the requirements of 3.2.8.4 shall constitute
failure of this test.
4.2.8.5 Door drip edge. The door shall be inspected to ensure compliance with
3.2.8.5. Failure to meet the requirements of 3.2.8.5 shall constitute failure of
this test.
4.2.9 Ladder. The ladder shall be attached to the shelter which is mounted on
an M1097 HMMWV or to a mounting surface which simulates the M1097 HMMWV, according
to the contractors attaching instructions. A 400 lb load shall be applied for 5
minutes in the location which shall cause the greatest amount of stress to the
ladder. The ladder shall not be damaged or deformed. Failure to meet the
requirements of 3.2.9 shall constitute failure of this test.
4.2.10 Roof Hatch. The roof hatch shall be inspected to ensure compliance with
3.2.10. Failure to meet the requirements of 3.2.10 shall constitute failure of
this test.
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