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CSLB C-9 Drywall Exam Practice Questions - California CSLB C-9 Drywall Contractor Examination Exam

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A contractor is estimating drywall for a commercial office room measuring 30 ft by 40 ft with a 10 ft ceiling height. Assuming 4 ft by 12 ft sheets and adding a 10% waste factor, how many drywall sheets are required for the walls and flat ceiling combined?
Correct Answer:
60 sheets of 4' x 12' drywall

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