RCC Structures Design problems
- 1. A prestressed rectangular beam which carries two concentrated loads W at L/3 from either end, is provided with a bent tendon with tension P such that central one-third portion of the tendon remains parallel to the longitudinal axis, the maximum dip h is
Options- A.
- B.
- C.
- D.
- E.
Discuss
Correct Answer:
- 2. A short column 20 cm x 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2, the Safe load on the column, should not exceed
Options- A. 4120 kg
- B. 41, 200 kg
- C. 412, 000 kg
- D. none of these. Discuss
Correct Answer: 41, 200 kg
- 3. Thickened part of a flat slab over its supporting column, is technically known as
Options- A. drop panel
- B. capital
- C. column head
- D. none of these. Discuss
Correct Answer: drop panel
- 4. The minimum cube strength of concrete used for a prestressed member, is
Options- A. 50 kg/cm2
- B. 150 kg/cm2
- C. 250 kg/cm2
- D. 350 kg/cm2
- E. 400 kg/cm2 Discuss
Correct Answer: 350 kg/cm2
- 5. For a circular slab carrying a uniformly distributed load, the ratio of the maximum negative to maximum positive radial moment, is
Options- A. 1
- B. 2
- C. 3
- D. 4
- E. 5 Discuss
Correct Answer: 2
- 6. The thickness of base slab of a retaining wall generally provided, is
Options- A. one half of the width of the stem at the bottom
- B. one-third of the width of the stem at the bottom
- C. one fourth of the width of the steam at the bottom
- D. width of the stem at the bottom
- E. twice the width of the steam at the bottom. Discuss
Correct Answer: width of the stem at the bottom
- 7. A foundation rests on
Options- A. base of the foundation
- B. subgrade
- C. foundation soil
- D. both (b) and (c) Discuss
Correct Answer: both (b) and (c)
- 8. A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall depth, is
Options- A. 2.5
- B. 2.0
- C. less than 2
- D. less than 2.5 Discuss
Correct Answer: 2.5
- 9. An R.C.C. column is treated as long if its slenderness ratio is greater than
Options- A. 30
- B. 35
- C. 40
- D. 50
- E. 60 Discuss
Correct Answer: 50
- 10. If the average bending stress is 6 kg/cm2 for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is
Options- A. 28 d
- B. 38 d
- C. 48 d
- D. 58 d
- E. 95 d Discuss
Correct Answer: 58 d
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