For the next-week procurement cycle at the museum back-of-house corridor, the covered-walk soffit bay measures 5585 SF before a 6% waste allowance. Each rigid insulation sheet covers 48 SF. How many sheets should be ordered?
Correct Answer
A) 124 sheets
Order quantity equals area times waste factor divided by 48 SF coverage, rounded up.
Why This Is the Correct Answer
Order quantity equals area times waste factor divided by 48 SF coverage, rounded up.
Why the Other Options Are Wrong
Option B: 116 sheets
116 sheets is below the supported result for rigid insulation at soffit; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 129 sheets
129 sheets is above the supported result for rigid insulation at soffit; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 127 sheets
127 sheets is above the supported result for rigid insulation at soffit; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Measure to area, adjust for times, then let Estimator Checks set the finish line.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Thermal and moisture protection; insulation boards; verify the construction method, material quantity, equipment use, unit conversion, or field-control calculation.
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