|Generally heavy loads are transported
in open-top or platform containers, which allow for mechanical loading
and unloading. Platform containers, in particular, have a greater
load capacity than any other type.
When loading heavy products, special care must be taken to distribute
the weight of the cargo evenly over the floor of the container.
Objects with small support bases should be mounted on support plates
or beams to help spread the weight evenly across the container.
The center of gravity of the load must be kept as low and close
to the center of the container as possible. Containers with irregular
cargoes often don't fit into ship holds, and have to be transported
Centers of gravity and lifting points should be clearly marked for
oversize or heavy cargoes. Bundles weighing over 3 tons should have
their weight stamped in an easily visible location on each bundle.
As a general rule, the heavier the load, the more carefully it
must be secured. Always use heavy-duty stowage gear. Shoring structures
are often needed to reinforce container walls. Shock absorbers are
frequently used to absorb stress and allow limited movement.