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Question: approximately 50 cubic yards of clayey soil are excavated for...

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Approximately 50 cubic yards of clayey soil are excavated for a utility trench. The water conten and dry unit weight of this soil are 19 percent and 100 pounds per cubic foot (pcf), respectively. This soil will be used to backfill the trench after the utility pipe is placed. Before the soil is placed back into the trench and compacted, it must be moisture conditioned (i.e. water must be added to it). The new water content of the soil must be approximately 26 percent before the soil is placed in the trench. For this condition to be met, how much water must be added to the originally excavated soil? Report your answer in cubic feet (t).
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