1.

Coefficient of passive earth pressure kp

A. kp = 1-sinϕ / 1+sinϕ
B. kp = 1-sin2ϕ / 1+sin2ϕ
C. kp = 1+sinϕ / 1-sinϕ
D. kp = 1+sin2ϕ / 1-sin2ϕ
Answer» D. kp = 1+sin2ϕ / 1-sin2ϕ


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