Question: A sandy silt soil extends 17 m down from the ground surface. Lab tests show the soil has a total unit weight of 18.8 kN/m3,

A sandy silt soil extends 17 m down from the ground surface. Lab tests show the soil has a total unit weight of 18.8 kN/m3, a saturated unit weight of 20.3 kN/m3 and an effective particle diameter of 0.13 mm . The water table is located 9 m below the ground surface. Determine the effective stress at the base of the sandy silt layer, 17 m below the ground surface

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