SC Marine Practice Questions - South Carolina Marine Contractor Examination Exam

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Hammer cushions and pile cushions reduce the energy that actually reaches the pile. If a hammer's rated energy is 24,000 ft-lb and the combined efficiency of hammer, cushions, and helmet is 60 percent, what energy is delivered to the pile?

8,000 ft-lb 40,000 ft-lb 24,000 ft-lb 14,400 ft-lb

Correct Answer:

14,400 ft-lb

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