3. An earth fill, when completed, will occupy a net volume 185,000 cy. The borrow material that will be used to construct this fill is a Sand, dry. In its "bank"condition, the borrow material has a wet unit weight (/) of 125 lb per cubic foot A, a water content of ( of 15.5%, and an in- place void ratio (e) of 0.725. the fill will be constructed in layers of 9-in depth, loose measure, and compacted to a dry unit weight (a) of 117 lb per cf of a moisture content of 16.3%. Compute the required volume of borrow pit excavation. [30 points)