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

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

## RCC Structures Design The system in which high tensile alloy steel bars (silica manganese steel) are used as pre-stressing tendons, is known as

Lee-McCall system
C.L. standard system
Magnel-Blaton system
Freyssinet system

## RCC Structures Design An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus

UDL of wall + load from the roof
UDL of wall

## RCC Structures Design The width of the rib of a T-beam, is generally kept between

1/7 to 1/3 of rib depth
1/3 to 2/3 of rib depth
1/2 to 3/4 of rib depth
1/3 to 1/2 of rib depth

## RCC Structures Design The weight of a foundation is assumed as

10% of wall weight
7% of wall weight
12% of wall weight
5% of wall weight

## RCC Structures Design If ‘p’ is the net upward pressure on a square footing of side ‘b’ for a square column of side ‘a’, the maximum bending moment is given by

M = pb (c - a)/4
M = pb (b + a)/8
M = pb (b + a)/8
M = pb (b - a)²/8
M = pb (b - a)²/4