Civil RCC Structures Design MCQ Test - Set 03 - ObjectiveBooks

# Practice Test: Question Set - 03

1. If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Young's modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is:
(A) (1 - Cmf - eE
(B) (C - 1) mf + eE
(C) (C - 1) mf - eE
(D) (1 - C) mf + eE

2. In a pre-stressed member it is advisable to use
(A) Low strength concrete only
(B) High strength concrete only
(C) Low strength concrete but high tensile steel
(D) High strength concrete and high tensile steel

3. 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
(A) Triangular load of the wall
(B) UDL of wall
(C) UDL of wall + load from the roof

4. The minimum clear cover for R.C.C. columns shall be
(A) Greater of 40 mm or diameter
(B) Smaller of 40 mm or diameter
(C) Greater of 25 mm or diameter
(D) Smaller of 25 mm or diameter

5. The minimum thickness of a flat slab is taken
(A) L/32 for end panels without drops
(B) L/36 for end panels without drops
(C) L/36 for interior panels without drop
(D) All the above

6. The design of heel slab of a retaining wall is based on the maximum bending moment due to:
(A) Its own weight
(B) Weight of the soil above it
(C) Load of the surcharge, if any
(D) All the above

7. An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is
(A) Safe in shear
(B) Is safe with stirrups
(C) Is safe with stirrups and inclined members
(D) Needs revision of the section

8. The neutral axis of a T-beam exists
(A) Within the flange
(B) At the bottom edge of the slab
(C) Below the slab
(D) All the above

9. A pre-cast pile generally used, is
(A) Circular
(B) Square
(C) Octagonal
(D) Square with corners chamfered

10. The spacing of transverse reinforcement of column is decided by the following consideration.
(A) The least lateral dimension of the column
(B) Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column
(C) Forty-eight times the diameter of transverse reinforcement
(D) All the above

11. The self-weight of the footing, is
(A) Not considered for calculating the upward pressure on footing
(B) Also considered for calculating the upward pressure on footing
(C) Not considered for calculating the area of the footing
(D) Both (b) and (c)

12. If the bearing capacity of soil is 10 tonnes/cm2 and the projection of plain concrete footing from walls, is a cm, the depth D of footing is
(A) D = 0.0775 a
(B) D = 0.775 a
(C) D = 0.775 √a
(D) D = 0.775 a2

13. Pick up the incorrect statement from the following:
(A) In the stem of a retaining wall, reinforcement is provided near the earth side
(B) In the toe slab of a retaining wall, reinforcement is provided at the bottom of the slab
(C) In the heel slab of a retaining wall, reinforcement is provided at the top of the slab
(D) None of these

14. After pre-stressing process is completed, a loss of stress is due to
(A) Shrinkage of concrete
(B) Elastic shortening of concrete
(C) Creep of concrete
(D) All the above

15. In a simply supported slab, alternate bars are curtailed at
(A) 1/4th of the span
(B) 1/5th of the span
(C) 1/6th of the span
(D) 1/7th of the span

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