The material in Problem 21 has a shrinkage of 97 percent and a swell of 18 percent. Determine the net import or export required for the project and the number of 11-cubic-yard truckloads needed to haul the material to or from the project.

What will be an ideal response?


Convert the fill from compacted cubic yards to bank cubic yards:

Required bcy = 922 ccy / 0.97 = 951 bcy

Find the net import:

Import (bcy) = 951 bcy – 838 bcy = 113 bcy

Import (lcy) = 113 bcy × (1 + 0.18) = 133 lcy

Trucks = 133 lcy / 11 lcy per truck = 13 trucks

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