At the manufacturing clean-room chase, during the preconstruction estimate lock, the selective demolition debris produces 307 CY of debris volume, with 15% swell or handling allowance. Each container holds 30 CY. How many dumpsters are required?
Correct Answer
C) 12 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: 10 dumpsters
10 dumpsters is below the supported result for selective demolition debris; it likely omits allowance, conversion, coverage, or final round-up.
Option B: 13 dumpsters
13 dumpsters is above the supported result for selective demolition debris; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 11 dumpsters
11 dumpsters is below the supported result for selective demolition debris; it likely omits allowance, conversion, coverage, or final round-up.
Memory Technique
Measure to container, adjust for count, then let Superintendent Checks set the finish line.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Demolition methods; dumpster capacity planning; verify the construction method, material quantity, equipment use, unit conversion, or field-control calculation.
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