AZ ROC Hardscaping and Irrigation Systems – Residential and Commercial (CR-21) Practice Exam

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If you have 12 BYC (Bank cubic yards) of sand, how much will you have after compaction?

11.0

12

11.5

11.76

When you compact sand, the particles pack closer together, so the volume decreases even though the mass stays the same. The final volume is the initial volume times the remaining fraction after compaction. A typical estimate for sand under ordinary compaction is about 2% reduction, so 12 BYC becomes 12 × 0.98 = 11.76 BYC.

So the correct amount after compaction is 11.76 BYC.

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