SC Marine Practice Questions - South Carolina Marine Contractor Examination Exam

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On prestressed concrete piles, a pile cushion (often laminated plywood) is placed between the helmet and the pile head primarily to do which of the following?

Increase slump of the concrete Eliminate the need for a hammer cushion Soften the blow, reduce tensile and compressive stress peaks, and protect the pile head Mark the cutoff elevation

Correct Answer:

Soften the blow, reduce tensile and compressive stress peaks, and protect the pile head

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