Structural Steel is inherently a difficult load to secure. Different shapes and sizes, along with the desire to keep a multiple piece load together on a single trailer can be challenging.
General Rules
Steel-on-steel isn't acceptable.
The bottom layer of the load should have the widest dimension of the load.
Chains should be used on all structural steel, plate steel, and beam loads.
Softeners may be used under the chains for steel susceptible to damage.
Four inch straps with a rated capacity of 12.000 pounds or greater in good condition may be supplemented in addition to the required chains and binders.
Steel beams (i.e., "H" or "I" beams) should be blocked in the web and wedged between flanges.
It's recommended that loads be configured so cargo and lashing remain inside the trailer dimension.
All products must be secured. Objects on top of structural steel or tucked inside of square tubing is unacceptable.
Dunnage
Hardwood is preferable for dunnaging and bracing steel loads, however a good quality fir or better is acceptable.
Multiple pieces of dunnage must be firmly nailed to each other.
Pallets should not be used as dunnage.
Cross beams should span the entire width of the load when possible.
Source: HERE
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