RCC Structures Design problems
- 1. The width of the flange of a T-beam, which may be considered to act effectively with the rib depends upon
Options- A. breadth of the rib
- B. overall thickness of the rib
- C. centre to centre distance between T-beams
- D. span of the T-beam
- E. all the above. Discuss
Correct Answer: all the above.
- 2. For M 150 mix concrete, according to I.S. specifications, local bond stress, is
Options- A. 5 kg/cm2
- B. 10 kg/cm2
- C. 15 kg/cm2
- D. 20 kg/cm2
- E. 25 kg/cm2 Discuss
Correct Answer: 10 kg/cm2
- 3. For initial estimate for a beam design, the width is assumed
Options- A. 1/15th of span
- B. 1/20th of span
- C. 1/25th of span
- D. 1/30th of span
- E. 1/40th of span. Discuss
Correct Answer: 1/30th of span
- 4. Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than
Options- A. 42 diameters from the centre of the column
- B. 42 diameters from the inner edge of the column
- C. 42 diameters from the outer edge of the column
- D. 24 diameter from the centre of the column Discuss
Correct Answer: 42 diameters from the outer edge of the column
- 5. Design of a two way slab simply supported on edges and having no provision to prevent the corners from lifting, is made by
Options- A. Rankine formula
- B. Marcus formula
- C. Rankine Grashoff formula
- D. Grashoff formula
- E. Rankine-Marcus formula. Discuss
Correct Answer: Rankine Grashoff formula
- 6. If k is wobble correction factor, ? is coefficient of friction between the duct surface and the curve of tendon of radius R, the tension ratio at a distance x from either end, is
Options- A.
- B.
- C.
- D.
- E.
Discuss
Correct Answer:
- 7. Cantilever retaining walls can safely be used for a height not more than
Options- A. 3 m
- B. 4 m
- C. 5 m
- D. 6 m
- E. 8 m Discuss
Correct Answer: 6 m
- 8. According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 grade concrete, is
Options- A. 5 kg/cm2
- B. 10 kg/cm2
- C. 15 kg/cm2
- D. 20 kg/cm2
- E. 25 kg/cm2 Discuss
Correct Answer: 5 kg/cm2
- 9. If the permissible compressive stress for a concrete in bending is C kg/m2, the modular ratio is
Options- A. 2800/C
- B. 2300/2C
- C. 2800/3C
- D. 2800/C2 Discuss
Correct Answer: 2800/3C
- 10. The design of a retaining wall assumes that the retained earth
Options- A. is dry
- B. is free from moisture
- C. is not cohesives
- D. consists of granular particles
- E. all the above. Discuss
Correct Answer: all the above.
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