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Trailer safety protects everyone by ProQuest


The way to calculate the aggregate load limit is to add 50 percent of the working load limit of each tiedown used to secure the load; and if the total is greater than 50 percent of the load being carried, it is secured within the limit requirements. For example, assume that a trailer is being loaded with an 11,000Ib. telehandler, which will be held with four Grade 70, 3/8-in. chains. Since each chain is rated at 6,600 maximum pull, the aggregate working load limit is 6,600 lbs. divided by two.

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