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| The sum of the working load rating on the securement devices must equal 1/2 the weight of the object being secured. Booms and buckets must also be secured. Chain or straps should be marked for load rating. If they are not marked it will be assumed they are of the lowest grade. The officer should have a chart of this as I believe does your DOT handbook. If a chain has drag marks or is stretched it can be considered as not there.
There are also rules about reduced capacity on straps. They don't care if you tie them down with shoelaces as long as the load rating is high enough on them.3/8 grade 40 chain is roughly equal to 5/16 grade 70. | |
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DOT tie down rules
