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MIL-L-40064E
3.3.2 Recovered materials.  For the purpose of this requirement, re-
covered materials are those materials which have been collected from solid
waste and reprocessed to become a source of raw materials, as distinguished
from virgin raw materials. The components, pieces and parts incorporated in
the loading plates may be newly fabricated from recovered materials to the
maximum extent practicable, provided the loading plates produced meets all
other requirements of this specification.  Used, rebuilt or remanufactured
components, pieces and parts shall not be incorporated in the loading plates.
3.3.3 Castings.  Castings provided on all style A loading plates shall
be at least of the quality normally used in commercial practice, free from
injurious blowholes, porosity, shrinkage, cracks, or other defects.  The use
of repaired castings in which the repairs could adversely affect the strength
of the castings shall not be permitted.  Castings shall be in accordance with
MIL-STD-2175, class 3.
3.4 Design and construction.  Loading plates shall be of welded construct-
ion, except for the retaining and lifting devices (chains with recessed hooks,
and lock-stops), which may be secured by other means.
3.4.1 Structural design. Loading plates shall be designed with a safety
factor of 200 percent of rated load capacity based on yield strength of the
material.  The underside structural members shall extend to at least 7.50
inches below the floor plate to insure positive blocking between door of
truck or railcar and dock edge.  The combination loading plate and ramp shall
be designed such that the two units shall lock together with locking pins, to
form one unit.  The locking pin position shall be protected by safety curbing.
Ramplocks shall be provided to stabilize the loading plate. Ramplocks shall
be of adjustable type and shall be attached to the ramp section of type 111
loading plates.
3.4.2 Lifting devices.  Style B loading plates shall have lifting devices
so that the loading plates may be transported and positioned by a forklift
-
truck having forks 36 inches long, 6 inches wide and located on 24 inch centers.
The style A loading plates shall, when specified (see 6.2), have lifting lOOps
with dimensions not less than 7 inches wide and 3 inches high on 26 inch
centers.  The loops shall drop by gravity flush with the floor plate when not
in use.  Lifting loops are to be removable for maintenance. Removal of loops
shall be accomplished with simple hand tools.
3.4.3 Hand grip.  Style A loading plates shall be equipped with continuous
hand grips located along each side or with four hand grips, two located within
each of the side curbs on the outside, near the ends.  Hand grip holes are to
be a minimum of 5 inches long X 2.50 inches wide and 2 inches deep. Hand
grips shall be free of sharp edges and sealed to prevent accumulation of
moisture within the side curbs.
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