Determine the amount of backfill needed for the spread footings and columns in Problem 37. From Problem 37 the depth of excavation was 2 ft and quantity of excavation was 6.3 bcy. Find the volume of the footings and the columns:
What will be an ideal response?
Footing volume = 2 ea × 2?6? × 2?6? × 1? = 12.5 cf / 27 cf per cy = 0.5 cy
Column volume = 2 ea × 1? × 1? × 1? = 2 cf / 27 cf per cy = 0.1 cy
Find the volume of the backfill. The backfill will be in compacted cubic yards (or feet).
Backfill (ccy) = 6.3 bcy – 0.5 cy – 0.1 cy = 5.7 ccy
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