RCC Structures Design problems
- 1. The pitch of the main bars in a simply supported slab, should not exceed its effective depth by
Options- A. three times
- B. four times
- C. five times
- D. six times
- E. seven times. Discuss
Correct Answer: six times
- 2. P is the prestressed force applied to tendon of a rectangular prestressed 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
Options- A.
- B.
- C.
- D.
- E.
Discuss
Correct Answer:
- 3. The section of a reinforced beam where most distant concrete fibre in compression and tension in steel attains permissible stressess simultaneously, is called
Options- A. balanced section
- B. economic section
- C. critical section
- D. all the above. Discuss
Correct Answer: all the above.
- 4. The maximum permissible size of aggregates to be used in casting the ribs of a slab, is
Options- A. 5 mm
- B. 7.5 mm
- C. 10 mm
- D. 15 mm
- E. 20 mm Discuss
Correct Answer: 10 mm
- 5. In a simply supported slab, alternate bars are curtailed at
Options- A. 1/4th of the span
- B. 1/5th of the span
- C. 1/6th of the span
- D. 1/7th of the span
- E. none of these. Discuss
Correct Answer: 1/7th of the span
- 6. The diameter of main bars in R.C.C. columns, shall not be less than
Options- A. 6 mm
- B. 8 mm
- C. 10 mm
- D. 12 mm Discuss
Correct Answer: 12 mm
- 7. In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2, nominal reinforcement is provided at a pitch of
Options- A. one-half lever arm of the section
- B. one-third lever arm of the section
- C. lever arm of the section
- D. one and half lever arm of the section. Discuss
Correct Answer: lever arm of the section
- 8. The zone in which transverse bending is likely to occur may be obtained by drawing a line from the faces of the column making an angle ?° with horizontal where ?° is
Options- A. 30°
- B. 45°
- C. 60°
- D. none of these. Discuss
Correct Answer: 45°
- 9. According to load factor method, the permissible load W on a short column reinforced with longitudinal bars and lateral stirrups, is
Options- A. Stress in concrete x area of concrete
- B. Stress in steel x area of steel
- C. Stress in concrete x area of concrete + Stress in steel x area of steel
- D. None of these. Discuss
Correct Answer: Stress in concrete x area of concrete + Stress in steel x area of steel
- 10. The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of
Options- A. 10 mm
- B. 15 mm
- C. 20 mm
- D. 25 mm
- E. 30 mm Discuss
Correct Answer: 25 mm
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