RCC Structures Design
The width of the flange of a L-beam, should be less than

Breadth of the rib + half clear distance between ribs
One-sixth of the effective span
Least of the above
Breadth of the rib + four times thickness of the slab

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

Cosine is equal to the ratio of the maximum resistance 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
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

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