Coefficient of active earth pressure ka – McqOptions

MCQOPTIONS

1.	Coefficient of active earth pressure ka
A.	ka = 1-sinϕ / 1+sinϕ
B.	ka = 1-sin2ϕ / 1+sin2ϕ
C.	ka = 1+sinϕ / 1-sinϕ
D.	ka = 1+sin2ϕ / 1-sin2ϕ
Answer» B. ka = 1-sin2ϕ / 1+sin2ϕ

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