During the subcontractor quantity check at the town-hall records counter, the covered-walk soffit bay measures 4814 SF before a 6% waste allowance. Each rigid insulation sheet covers 48 SF. How many sheets should be ordered?
Correct Answer
A) 107 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: 100 sheets
100 sheets is below the supported result for rigid insulation at soffit; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 111 sheets
111 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: 110 sheets
110 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
Rigid Insulation At cart for Estimator Checks: area first, times second, whole the controlling choice last.
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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