Top 250+ Solved RCC Structures Design MCQ Questions Answer
Q. A raft foundation is provided if its area exceeds the plan area of the building by
a. 10 %
b. 20 %
c. 40 %
d. 50%
Q. In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength
a. 100 kg/cm2
b. 200 kg/cm2
c. 300 kg/cm2
d. 400 kg/cm2
Q. If p1 is the vertical intensity of pressure at a depth h on a block of earth weighing w per unit p2 is
a. wh (1 - cos )/(1 + )
b. wh (1 - sin )/(1 + )
c. wh (1 - tan )/(1 + )
d. w (1 - cos )/h (1 + sin )
Q. 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
a. Shear force
b. Area of the section
c. Distance of the C.G. of the area from its neutralaxis
d. Moment of the beam section about its neutral axis
Q. According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than
a. 20 cm
b. 30 cm
c. 40 cm
d. 75 cm
Q. An R.C.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 metres and carries a U.D.L. of 3000 kg/m inclusive of its self weight. If the lever arm constant for the section is 0.865, the maximum intensity of shear stress, is
a. 8.3 kg/cm2
b. 7.6 kg/cm2
c. 21.5 kg/cm2
d. 11.4 kg/cm2
Q. The percentage of minimum reinforcement of the gross sectional area in slabs, is
a. 0.10 %
b. 0.12 %
c. 0.15 %
d. 0.18%
Q. If the permissible compressive stress for a concrete in bending is C kg/m2 , the modular ratio is
a. 2800/C
b. 2300/2C
c. 2800/3C
d. 2800/C2
Q. Cantilever retaining walls can safely be used for a height not more than
a. 3 m
b. 4 m
c. 5 m
d. 6 m
Q. The maximum area of tension reinforcement in beams shall not exceed
a. 0.15 %
b. 1.5 %
c. 4 %
d. 1 %
Q. The width of the flange of a T-beam should be less than
a. One-third of the effective span of the T-beam
b. Distance between the centres of T-beam
c. Breadth of the rib plus twelve times the thickness of the slab
d. Least of theabove
Q. According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 gradeconcrete, is
a. 5 kg/cm2
b. 10 kg/cm2
c. 15 kg/cm2
d. 20 kg/cm2
Q. The width of the flange of a T-beam, which may be considered to act effectively withthe rib depends upon
a. Breadth of the rib
b. Overall thickness of the rib
c. Centre to centre distance between T-beams
d. All the above