At the laboratory exhaust chase, during the field-takeoff reconciliation, the planter-wall back face measures 1157 SF before a 5% waste allowance. Each protection-board panel covers 24 SF. How many panels should be ordered?
Correct Answer
A) 51 panels
Order quantity equals area times waste factor divided by 24 SF coverage, rounded up.
Why This Is the Correct Answer
Order quantity equals area times waste factor divided by 24 SF coverage, rounded up.
Why the Other Options Are Wrong
Option B: 48 panels
48 panels is below the supported result for waterproofing protection board; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 53 panels
53 panels is above the supported result for waterproofing protection board; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 52 panels
52 panels is above the supported result for waterproofing protection board; 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 Waterproofing methods; protection board coverage; verify the construction method, material quantity, equipment use, unit conversion, or field-control calculation.
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