RCC Structures Design problems
- 1. The live load to be considered for an inaccessible roof, is
Options- A. Nil
- B. 75 kg/m2
- C. 150 kg/cm2
- D. 200 kg/m2 Discuss
Correct Answer: 75 kg/m2
- 2. Steel beam theory is used for
Options- A. design of simple steel beams
- B. steel beams encased in concrete
- C. doubly reinforced beams ignoring compressive stress in concrete
- D. beams if shear exceeds 4 times allowable shear stress. Discuss
Correct Answer: doubly reinforced beams ignoring compressive stress in concrete
- 3. For stairs spanning l metres longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area, the maximum bending moment per metre width, is
Options- A.
- B.
- C.
- D.
- E.
Discuss
Correct Answer:
- 4. The horizontal portion of a step in a stairs case, is known as
Options- A. rise
- B. flight
- C. winder
- D. tread. Discuss
Correct Answer: tread.
- 5. An R.C.C. column of 30 cm diameter is reinforced with 6 bars 12 mm ? placed symmetrically along the circumference. If it carries a load of 40, 000 kg axially, the stress is
Options- A. 49.9 kg/cm2
- B. 100 kg/cm2
- C. 250 kg/cm2
- D. 175 kg/cm2 Discuss
Correct Answer: 49.9 kg/cm2
- 6. To ensure uniform pressure distribution, the thickness of the foundation, is
Options- A. kept uniform throughout
- B. increased gradually towards the edge
- C. decreased gradually towards the edge
- D. kept zero at the edge. Discuss
Correct Answer: decreased gradually towards the edge
- 7. Pick up the incorrect statement from the following: Tensile reinforcement bars of a rectangular beam
Options- A. are curtailed if not required to resist the bending moment
- B. are bent up at suitable places to serve as shear reinforcement
- C. are bent down at suitable places to serve as shear reinforcement
- D. are maintained at bottom to provide at least local bond stress. Discuss
Correct Answer: are bent down at suitable places to serve as shear reinforcement
- 8. The shear reinforcement in R.C.C. is provided to resist
Options- A. vertical shear
- B. horizontal shear
- C. diagonal compression
- D. diagonal tension. Discuss
Correct Answer: diagonal tension.
- 9. If the depth of actual neutral axis of a doubly reinforced beam
Options- A. is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier
- B. is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
- C. is equal to the depth of critical neutral axis, the concrete and steel attain their maximum stresses simultanesouly
- D. all the above. Discuss
Correct Answer: all the above.
- 10. The weight of a foundation is assumed as
Options- A. 5% of wall weight
- B. 7% of wall weight
- C. 10% of wall weight
- D. 12% of wall weight Discuss
Correct Answer: 10% of wall weight
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