Soil Mechanics and Foundation Engineering problems
- 1. A structure is erected on an impervious clay whose thickness is 12 m. Drainage is possible both at upper and lower surfaces. Coefficient of consolidation is 0.015 cm2 per minute. For attaining 50% consolidation with a time factor 0.20, the number of days required
Options- A. 3233
- B. 3123
- C. 33331
- D. 3313 Discuss
Correct Answer: 33331
- 2. The pressure that builds up in pore water due to load increment on the soil, is termed
Options- A. excess pore pressure
- B. excess hydrostatic pressure
- C. hydrodynamic pressure
- D. all the above. Discuss
Correct Answer: all the above.
- 3. A soil not fully consolidated under the existing over-burden pressure, is called
Options- A. pre-consolidated
- B. normally consolidated
- C. under-consolidated
- D. none of these. Discuss
Correct Answer: under-consolidated
- 4. A grillage foundation
Options- A. is provided for heavily loaded isolated columns
- B. is treated as spread foundation
- C. consists of two sets of perpendicularly placed steel beams
- D. all the above. Discuss
Correct Answer: all the above.
- 5. The intensity of active earth pressure at a depth of 10 metres in dry cohesionless sand with an angle of internal friction of 30° and with a weight of 1.8 t/m3, is
Options- A. 4 t/m2
- B. 5 t/m2
- C. 6 t/m2
- D. 7 t/m2
- E. 8 t/m2 Discuss
Correct Answer: 6 t/m2
- 6. The density of soil can be increased
Options- A. by reducing the space occupied by air
- B. by elastic compression of soil grains
- C. by expelling water from pores
- D. All the above. Discuss
Correct Answer: All the above.
- 7. During seepage through a soil, direction of seepage is always
Options- A. parallel to equipotential lines
- B. perpendicular to stream lines
- C. perpendicular to equipotential lines
- D. none of these. Discuss
Correct Answer: perpendicular to equipotential lines
- 8. The specific gravity of Calcite is
Options- A. 2.65
- B. 2.72
- C. 2.85
- D. 2.90 Discuss
Correct Answer: 2.72
- 9. The water content in a soil sample when it continues to loose weight without loosing the volume, is called
Options- A. Shrinkage limit
- B. Plastic limit
- C. liquid limit
- D. semi-solid limit. Discuss
Correct Answer: Shrinkage limit
- 10. The angle of internal friction of clays, is usually
Options- A. 0° to 5°
- B. 5° to 20°
- C. 20° to 30°
- D. 30° to 45° Discuss
Correct Answer: 5° to 20°
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