RCC Structures Design
The angle of internal friction of soil mass is the angle whose

None of these
Sine is equal to the ratio of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on the plane
Tangent is equal to the rate of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on the plane
Cosine is equal to the ratio of the maximum resistance sliding on any internal inclined plane to the normal pressure acting on the plane

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RCC Structures Design
The spacing of transverse reinforcement of column is decided by the following consideration.

Forty-eight times the diameter of transverse reinforcement
All listed here
Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column
The least lateral dimension of the column

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