RCC Structures Design problems
- 1. The diameter of transverse reinforcement of columns should be equal to one-fourth of the diameter of the main steel rods but not less than
Options- A. 4 mm
- B. 5 mm
- C. 6 mm
- D. 7 mm
- E. 8 mm Discuss
Correct Answer: 7 mm
- 2. If d is the diameter of a bar, ft is allowable tensile stress and fb, is allowable bond stress, the bond length is given by
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 3. If H is the overall height of a retaining wall retaining a surcharge, the width of the base slab usually provided, is
Options- A. 0.3 H
- B. 0.4 H
- C. 0.5 H
- D. 0.6 H
- E. 0.7 H Discuss
Correct Answer: 0.7 H
- 4. If the maximum bending moment of a simply supported slab is M Kg.cm, the effective depth of the slab is (where Q is M.R. factor)
Options- A.
- B.
- C.
- D.
- E.
Discuss
Correct Answer:
- 5. If permissible working stresses in steel and concrete are respectively 1400 kg/cm2 and 80 kg/cm2 and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is
Options- A. 37 cm
- B. 38 cm
- C. 39 cm
- D. 40 cm Discuss
Correct Answer: 40 cm
- 6. A pre-stressed concrete member
Options- A. is made of concrete
- B. is made of reinforced concrete
- C. is stressed after casting
- D. possesses internal stresses. Discuss
Correct Answer: possesses internal stresses.
- 7. In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called
Options- A. under-reinforced section
- B. over reinforced section
- C. economic section
- D. critical section. Discuss
Correct Answer: over reinforced section
- 8. In a combined footing if shear stress does not exceed 5 kg/cm2, the nominal stirrups provided are
Options- A. 6 legged
- B. 8 legged
- C. 10 legged
- D. 12 legged
- E. none of these. Discuss
Correct Answer: 8 legged
- 9. 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
Options- A. safe in shear
- B. is safe with stirrups
- C. is safe with stirrups and inclined members
- D. needs revision of the section. Discuss
Correct Answer: safe in shear
- 10. Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than
Options- A. one diameter of thinner bar
- B. one diameter of thicker bar
- C. sum of the diameters of ihinner and thicker bars
- D. twice the diameter of thinner bar
- E. none of these. Discuss
Correct Answer: one diameter of thicker bar
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