Eight inches of topsoil is to be removed and stockpiled for the building in Figure 10.49. The topsoil is to be removed 10 feet back from the perimeter of the building to allow for working around the building and sloping the sides of the excavation. How many bank cubic yards of topsoil need to be removed and stockpiled?
The limits of the topsoil excavation are shown in Figure 10-4.
What will be an ideal response?
Two solutions are provided below:
Area = 14 ft × 48 ft + 52 ft × (12 ft + 48 ft) + 14 ft × 48 ft = 4,464 sf
Area = 80 ft × (12 ft + 48 ft) – 2 × 14 ft × 12 ft = 4,464 sf
Volume = 4,464 sf × 8 in / 12 in per ft = 2,976 bcf / 27 cf per cy = 110 bcy
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