The material in Problem 18 has a shrinkage of 95 percent and a swell of 30 percent. Determine the net import or export required for the project and the number of 9-cubic-yard truckloads needed to haul the material to or from the project.

Question

What will be an ideal response?

Answer 1

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

Required bcy = 664 ccy / 0.95 = 699 bcy

Find the net import:

Import (bcy) = 699 bcy – 689 bcy = 10 bcy

Import (lcy) = 10 bcy × (1 + 0.30) = 13 lcy

Trucks = 13 lcy / 9 lcy per truck = 2 trucks