Question

The active earth pressure of a soil is proportional to (where φ is the angle of friction of the soil)

a.

tan (45° - φ)

b.

tan² (45° + φ/2)

c.

tan² (45° - φ/2)

d.

tan (45° + φ)

Answer: (c).tan² (45° - φ/2)

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Q. The active earth pressure of a soil is proportional to (where φ is the angle of friction of the soil)

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