At the police evidence-processing room, during the subcontractor quantity check, the roof tear-off debris produces 127 CY of tear-off volume, with 0% swell or handling allowance. Each container holds 20 CY. How many dumpsters are required?
Correct Answer
D) 7 dumpsters
Container count equals adjusted debris volume divided by container capacity, rounded up.
Why This Is the Correct Answer
Container count equals adjusted debris volume divided by container capacity, rounded up.
Why the Other Options Are Wrong
Option A: 6 dumpsters
6 dumpsters is below the supported result for roof tear-off debris; it likely omits allowance, conversion, coverage, or final round-up.
Option B: 8 dumpsters
8 dumpsters is above the supported result for roof tear-off debris; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option C: 9 dumpsters
9 dumpsters is above the supported result for roof tear-off debris; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Superintendent Checks takeoff: count the condition before counting the package Tie the cue to Roof Tear-Off Debris Superintendent.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Roof demolition; dumpster planning; verify the construction method, material quantity, equipment use, unit conversion, or field-control calculation.
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