Soil Mechanics and Foundation Engineering problems
- 1. A soil has bulk density 2.30 g/cm3 and water content 15 per cent, the dry density of the sample, is
Options- A. 1.0 g/cm2
- B. 1.5 g/cm3
- C. 2.0 g/cm3
- D. 2.5 g/cm3 Discuss
Correct Answer: 2.0 g/cm3
- 2. A coarse-grained soil has a voids ratio 0.75, and specific gravity as 2.75. The critical gradient at which quick sand condition occurs, is
Options- A. 0.25
- B. 0.50
- C. 0.75
- D. 1.00 Discuss
Correct Answer: 1.00
- 3. Rankine's theory of active earth pressure assumes
Options- A. soil mass is homogeneous, dry and cohesionless
- B. ground surface is a plane which may be horizontal or inclined
- C. back of the wall is vertical and smooth
- D. wall yields about the base
- E. all the above. Discuss
Correct Answer: all the above.
- 4. Back fill with a sloping surface exerts a total active pressure Pa on the wall of height H and acts at
Options- A. H/4 above the base parallel to base
- B. H/2 above the base parallel to base
- C. H/3 above the base parallel to base
- D. H/5 above the base parallel to base. Discuss
Correct Answer: H/3 above the base parallel to base
- 5. A compacted soil sample using 10% moisture content has a weight of 200 g and mass unit weight of 2.0 g/cm3. If the specific gravity of soil particles and water are 2.7 and 1.0, the degree of saturation of the soil is
Options- A. 11.1%
- B. 55.6%
- C. 69.6%
- D. none of these. Discuss
Correct Answer: 55.6%
- 6. Under-reamed piles are generally
Options- A. driven piles
- B. bored piles
- C. precast piles
- D. all the above. Discuss
Correct Answer: bored piles
- 7. Pick up the correct statement from the following:
Options- A. When water table is above the base of a footing, the dry weight m should be used for soil below water table
- B. When water table is located somewhat below the base of a footing, the elastic wedge is partly of moist soil and partly of submerged soil, and a suitable reduction factor is used
- C. When water table is just at the base of the footing, no reduction factor is used
- D. None of these. Discuss
Correct Answer: When water table is located somewhat below the base of a footing, the elastic wedge is partly of moist soil and partly of submerged soil, and a suitable reduction factor is used
- 8. Minimum depth of a footing carrying a heavy load, is calculated by the formula
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 9. The ratio of the weight of given volume of soil solids to the weight of an equal volume of distilled water at the given temperature, is known
Options- A. porosity
- B. specific gravity
- C. void ratio
- D. water content. Discuss
Correct Answer: specific gravity
- 10. The coefficient of curvature is defined
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
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