When slings are used to lift loads, safety professionals must ensure the weight does not exceed the safe working load limit (WLL) of the sling. If the weight is too great, the sling may break and drop the load— causing property damage, serious injury, or death. This lecture explores some basic concepts used to establish working load limits. Find the appropriate load factor from the chart at the right based on the angle of lift determined. Multiply the combined rated capacity of 6,400 lbs. By the load factor. For example, if the angle of lift is 60 degrees, then multiply 6,400 by.866. 6,400 x.866 = 5,542. Therefore, the rated capacity of this 2-legged sling at 60 degrees is 5,542.
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