RCC Structures Design problems
- 1. The design of heel slab of a retaining wall, is based on the maximum bending moment due to:
Options- A. its own weight
- B. weight of the soil above it,
- C. load of the surcharge, if any
- D. upward soil reaction
- E. all the above. Discuss
Correct Answer: all the above.
- 2. On an absolutely rigid foundation base, the pressure will
Options- A. be more at the edges of the foundation
- B. be uniform
- C. not be uniform
- D. be zero at the centre of the foundation. Discuss
Correct Answer: not be uniform
- 3. If W is weight of a retaining wall and P is the horizontal earth pressure, the factor of safety against sliding, is
Options- A. 1.0
- B. 1.25
- C. 1.5
- D. 2.0
- E. 2.5 Discuss
Correct Answer: 1.5
- 4. Total pressure on the vertical face of a retaining wall of height h per unit run exerted by the retained earth weighing w per unit volume, is
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 5. Side face reinforcement shall be provided in the beam when depth of the web in a beam exceeds
Options- A. 50 cm
- B. 75 cm
- C. 100 cm
- D. 120 cm Discuss
Correct Answer: 75 cm
- 6. An intermediate T-beam reinforced with two layers of tensile steel with clear cover 13 cm encasted with the floor of a hall 12 metres by 7 metres, is spaced at 3 metres from adjoining beams and if the width of the beam is 20 cm, the breadth of the flange is
Options- A. 300 cm
- B. 233 cm
- C. 176 cm
- D. 236 cm
- E. 255 cm Discuss
Correct Answer: 176 cm
- 7. The weight of reinforced concrete, is generally taken as
Options- A. 2200 kg/m3
- B. 2300 kg/m3
- C. 2400 kg/m3
- D. 2500 kg/m3
- E. 2800 kg/m3 Discuss
Correct Answer: 2400 kg/m3
- 8. An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus
Options- A. triangular load of the wall
- B. UDL of wall
- C. UDL of wall + load from the roof
- D. triangular load + load from the roof. Discuss
Correct Answer: UDL of wall + load from the roof
- 9. As per IS : 456, the reinforcement in a column should not be less than
Options- A. 0.5% and not more than 5% of cross-sec-tional area
- B. 0.6% and not more than 6% of cross-see-tional area
- C. 0.7% and not more than 7% of cross-sec-tional area
- D. 0.8% and not more than 8% of cross-sectional area
- E. none of these. Discuss
Correct Answer: 0.8% and not more than 8% of cross-sectional area
- 10. In a singly reinforced beam
Options- A. compression is borne entirely by concrete
- B. steel possesses initial stresses when em-beded in concrete
- C. plane sections transverse to the centre line of the beam before bending remain plane after bending
- D. elastic modulii for concrete and steel have different values within the limits of deformation of the beam
- E. none of these. Discuss
Correct Answer: plane sections transverse to the centre line of the beam before bending remain plane after bending
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