1.

A retaining wall 10 m high with a vertical back retains moist sand with a horizontal surface. If unit weight of sand is 15 KN/cum and the angle of internal friction is 30 degree, the total active pressure (in KN) experienced by the wall per m run is

A. 25
B. 2250
C. 250
D. 23
E. 83.33
Answer» D. 23


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