FL Marine Specialty Practice Questions - Florida Certified Marine Specialty Contractor Examination Exam

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A 12-in square precast concrete pile is driven to bearing in dense sand. The geotechnical report gives an ultimate end-bearing capacity of 18,000 lb/ft² at the tip and an ultimate skin friction of 550 lb/ft² over the 30-ft embedded length. Ignoring the pile weight, what is the closest ultimate axial capacity of the pile?

Approximately 232,500 lb Approximately 16,500 lb Approximately 1,080,000 lb Approximately 198,000 lb

Correct Answer:

Approximately 232,500 lb

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