A dragline is excavating a ditch having a cross-sectional area of 160 sf, The ma

Question

A dragline is excavating a ditch having a cross-sectional area of 160 sf, The material swells 248% from the bank to loose state, The loose material has a 35 degree angle of repose. What is the height and width of the spoil pile? A soil borrow material in its natural state in the ground has a unit weight of 123 pcf. When a sample of this soil is dried in the laboratory, its dry unit weight is 103 pcf. What is the water content of this borrow material? A soil borrow material in its natural state in the ground has a unit weight of 120 pcf. When a sample of this soil is dried in the laboratory, its dry unit weight is 98 pcf. What is the water content of this borrow material?

Explanation / Answer

soil unit weight = 123 pcf;

soil dry weight = 103 pcf;

water content = 20 pcf;

so dry water content = Water weight / dry weight = 20/103 = 19.42 %

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