During the subcontractor quantity check at the retail demising-wall phase, the interior pit perimeter requires 144 LF of pit-wall forms at 2.0 ft high on 2 sides. What contact area is required?
Correct Answer
A) 576 SF
Form contact area equals length times height times the number of formed sides.
Why This Is the Correct Answer
Form contact area equals length times height times the number of formed sides.
Why the Other Options Are Wrong
Option B: 288 SF
288 SF is below the supported result for pit-wall forms; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 720 SF
720 SF is above the supported result for pit-wall forms; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 577 SF
577 SF is above the supported result for pit-wall forms; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Pit-Wall Forms cart for Concrete Foreman: form first, contact second, whole sf last.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Concrete formwork; pit wall forms; verify the construction method, material quantity, equipment use, unit conversion, or field-control calculation.
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