Specifications for a proposed earth fill require that soil be compacted 95% of standard proctor dry density. Tests on a glacial-till borrow material indicate that the maximum unit weight is 124 lb/ft3 at an optimum water content of 12%. The borrow material in its natural condition has e=0.6. If Gs=2.65 a) determine the dry unit weight of soil in the embankment. (Ans.117.8 lb/ft3) b) determine the dry unit weight in the borrow area. (Ans. 103.52 lb/ft3) c) Determine the minimum volume of borrow required to make 1 ft3 of acceptable compacted fill. (Ans. 1.14 ft3

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Q: SITUATION 5: Specifications for a proposed earth fill require that the soil be compacted to 95% of…

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Pricing Excavation and Backfill

Backfill, in construction, is the activity of returning the soil and gravel that are removed during building construction or using them again to toughen and support the foundation of the building or any other structural component.