Question: A river is 3 m deep with the riverbed consisting of a thick bed of sand having a saturated unit weight of 1 9 .

A river is 3 m deep with the riverbed consisting of a thick bed of sand having a saturated unit weight of 19.0 kN/m3. What would be the effective vertical stress at 4 m below the riverbed? If the water level rises by 2 m, what would be the new effective vertical stress at 4 m below the riverbed? If the water level drops by 2 m, what would be the new effective vertical stress at 4 m below the riverbed?(With Draw)

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