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

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
None of these
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
If the shear stress in a R.C.C. beam is

Greater than 4 kg/cm², but less than 20 kg/cm², shear reinforcement is provided
All of these
Equal or less than 5 kg/cm², no shear reinforcement is provided
Greater than 20 kg/cm², the size of the section is changed

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