A crew installs 720 sf of acoustic ceiling per day. The project includes 5,040 sf. How many crew days should be planned?
Correct Answer
B) 7 crew days
Divide total quantity by daily productivity.
Why This Is the Correct Answer
Divide total quantity by daily productivity.
Why the Other Options Are Wrong
Option A: 6 crew days
6 crew days is below the supported result for crew duration; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 8 crew days
8 crew days is above the supported result for crew duration; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 9 crew days
9 crew days is above the supported result for crew duration; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Measure to divide, adjust for daily, then let Interiors Estimate set the finish line.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 11th Edition, 2024 to Estimating labor productivity; crew duration; match the project role and timing before choosing.
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