At the courthouse records vault, during the crew-release check, the cricket infill zone measures 1192 SF before a 7% waste allowance. Each insulation board covers 32 SF. How many boards should be ordered?
Correct Answer
C) 40 boards
Order quantity equals area times waste factor divided by 32 SF coverage, rounded up.
Why This Is the Correct Answer
Order quantity equals area times waste factor divided by 32 SF coverage, rounded up.
Why the Other Options Are Wrong
Option A: 37 boards
37 boards is below the supported result for roof tapered insulation boards; it likely omits allowance, conversion, coverage, or final round-up.
Option B: 42 boards
42 boards is above the supported result for roof tapered insulation boards; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 41 boards
41 boards is above the supported result for roof tapered insulation boards; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Roof Tapered Insulation 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 Roofing systems; board coverage and waste allowance; verify the construction method, material quantity, equipment use, unit conversion, or field-control calculation.
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