The plans require 1,575 cy of compacted structural fill. Borrow material yields 87% after placement and compaction. How many loose cubic yards should be purchased?
Correct Answer
A) 1,810 lcy
Divide compacted required volume by the compaction yield.
Why This Is the Correct Answer
Divide compacted required volume by the compaction yield.
Why the Other Options Are Wrong
Option B: 1,370 lcy
1,370 lcy is below the supported result for backfill compaction yield; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 1,575 lcy
1,575 lcy is below the supported result for backfill compaction yield; it likely omits allowance, conversion, coverage, or final round-up.
Option D: 1,902 lcy
1,902 lcy is above the supported result for backfill compaction yield; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Measure to divide, adjust for compacted, then let Building Pad set the finish line.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 11th Edition, 2024 to Earthwork estimating; compaction yield; confirm the required quantity, authority, timing, or record before selecting the answer.
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