Quantcast Chapter 6.Truck and Trailer Loading

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CHAPTER 6.
TRUCK AND TRAILER LOADING
Improper distribution of
6.1 VEHICLE LOADING.
cargo in a truck or trailer shortens the life of tires,
axles, brakes, and other parts. Although a truck or
trailer may not be overloaded beyond the gross vehicle
weight capacity, individual tires and axles may still be
overloaded by faulty distribution of cargo.  Some
examples of proper placement of load are shown in
Figure 4.
a. Determining Center of Load. To properly load a
t r u c k or semitrailer unit, determine the center of
payload. In a truck, the center of payload is the center
of the body, or at the point midway between the rear of
the driver's cab and the tailgate. In a truck-tractor
semitrailer unit, the center of payload is roughly the
center of the semitrailer body, because the front wheels
of the tractor seldom carry any of the payload.
Whenever possible, distribute the load so that each axle
bears an equal proportion of the load within the given
vehicle.
E x a m p l e s of
weight
c a p a c i t y o f  the
approximate distribution of total weight are shown in
Figure 5.  No vehicle shall be loaded over its rated
capacity without direct authorization.
b.  Vehicle Capacity.  Determine the truck or
trailer capacity (payload limit) before leaving the
dispatcher's office. The capacity may be obtained from
the Navy registration data plate in the vehicle. If the
capacity is not stated on the plate, determine the
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