Question 15 of 30
Proof Load of derrick / crane is
A
More than breaking strength
B
More than safe working load
C
Less than
D
Same as safe working Load
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Answer & Explanation
The correct answer is Option B: More than safe working load.
The Proof Load of a derrick or crane is defined as the load that the equipment can withstand without permanent deformation or failure. It is always specified as being more than the Safe Working Load (SWL) to ensure a margin of safety.