Determine the amount of backfill needed for the basement in Problem 31. Ignore any backfill inside of the walls. From Problem 31 the depth of excavation was 10 ft and quantity of excavation was 594 bcy. Find the volume of the basement:
What will be an ideal response?
Building volume = 22? × 34? × 10? = 7,480 cf / 27 cf per cy = 277 cy
The corners of the footings will be added to the top and bottom sides.
Footing volume = (22? + 35?10? + 22? + 35?10?) × 1? × 11? = 106 cf / 27 cf per cy = 4 cy
Find the volume of the backfill. The backfill will be in compacted cubic yards (or feet).
Backfill (bcy) = 594 bcy – 277 cy – 4cy = 313 ccy
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