What is Safe Working Load (SWL), Breaking Stress (BS) and Proof Load?

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Asked on May 24, 2021
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Safe working load or SWL is the stress that a component of a lifting appliance can safely bear in normal use.
Breaking Stress is the stress at which a component of the lifting appliance fractures or breaks or develop cracks.
Proof Load is the load applied more than SWL of the appliance for testing purpose
So, SWL < Proof Load < Breaking Stress

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Posted by marinetales
Answered on May 25, 2021