## RCC Structures Design The maximum shear stress (q) in concrete of a reinforced cement concrete beam is

Width/(Lever arm × Shear force)
Shear force/(Lever arm × Width)
Lever arm/(Shear force × Width)
(Shear force × Width)/Lever arm

n
d + n/3
d - n/3
d

## RCC Structures Design Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to

Shear force
Distance of the C.G. of the area from its neutral axis
Moment of the beam section about its neutral axis
Area of the section

## RCC Structures Design Pick up the incorrect statement from the following: Tensile reinforcement bars of a rectangular beam

Are bent up at suitable places to serve as shear reinforcement
Are curtailed if not required to resist the bending moment
Are bent down at suitable places to serve as shear reinforcement
Are maintained at bottom to provide at least local bond stress

## RCC Structures Design If the ratio of long and short spans of a two way slab with corners held down is r, the actual reduction of B.M. is given by

(5/6) (r/1 + r²) M
(5/6) (r²/1 + r²) M
(5/6) (r²/1 + r⁴) M
(5/6) (r²/1 + r³) M

## RCC Structures Design ‘P’ is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is ‘A’ and sectional modulus is ‘Z’. The minimum stress ‘f’ on the beam subjected to a maximum bending moment ‘M’ is

f = (P/A) - (M/Z)
f = (A/P) - (M/Z)
f = (P/A) - (M/6Z)
f = (P/'- (Z/M)