RCC Structures Design problems
- 1. An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at
Options- A. 25°
- B. 35°
- C. 45°
- D. 55°
- E. 60° Discuss
Correct Answer: 45°
- 2. The diameter of longitudinal bars of a column should never be less than
Options- A. 6 mm
- B. 8 mm
- C. 10 mm
- D. 12 mm
- E. none of these. Discuss
Correct Answer: 12 mm
- 3. The effective width of a column strip of a flat slab, is
Options- A. one-fourth the width of the panel
- B. half the width of the panel
- C. radius of the column
- D. diameter of the column
- E. none of these. Discuss
Correct Answer: half the width of the panel
- 4. Dimensions of a beam need be changed if the shear stress is more than
Options- A. 10 kg/cm2
- B. 15 kg/cm2
- C. 20 kg/cm2
- D. 25 kg/cm2 Discuss
Correct Answer: 20 kg/cm2
- 5. The effective span of a simply supported slab, is
Options- A. distance between the centres of the bearings
- B. clear distance between the inner faces of the walls plus twice the thickness of the wall
- C. clear span plus effective depth of the slab
- D. none of these. Discuss
Correct Answer: clear distance between the inner faces of the walls plus twice the thickness of the wall
- 6. The minimum number of main steel bars provided in R.C.C.
Options- A. rectangular columns is 4
- B. circular columns is 6
- C. octagonal columns is 8
- D. all the above. Discuss
Correct Answer: all the above.
- 7. If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least
Options- A.
- B.
- C.
- D.
- E.
Discuss
Correct Answer:
- 8. If T and R are tread and rise respectively of a stair, then
Options- A. 2R + T = 60
- B. R + 2T = 60
- C. 2R + T = 30
- D. R + 2T= 30
- E. 3R + 27 = 30 Discuss
Correct Answer: 2R + T = 60
- 9. Pick up the incorrect statement from the following:
Options- A. In the stem of a retaining wall, reinforcement is provided near the earth side
- B. In the toe slab of a retaining wall, rein forcement is provided at the bottom of the slab
- C. In the heel slab of a retaining wall, rein forcement is provided at the top of the slab
- D. None of these. Discuss
Correct Answer: None of these.
- 10. If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is
Options- A. 40
- B. 45
- C. 50
- D. 55
- E. 60 Discuss
Correct Answer: 55
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