Soil Mechanics and Foundation Engineering problems
- 1. The void ratio of a soil sample decreases from 1.50 to 1.25 when the pressure is increased from 25 tonnes/m2 to 50 tonnes/m2, the coefficient of compressibility is
Options- A. 0.01
- B. 0.02
- C. 0.05
- D. 0.001 Discuss
Correct Answer: 0.01
- 2. The ultimate bearing capacity of a soil, is
Options- A. total load on the bearing area
- B. safe load on the bearing area
- C. load at which soil fails
- D. load at which soil consolidates. Discuss
Correct Answer: load at which soil fails
- 3. If W1, W2, W3 and W4 are the sequential weights obtained during observations in pycnometer method for determining water content, the formula to be used, is
Options- A. W =
- B. W =
- C. W =
- D. W =
Discuss
Correct Answer: W =
- 4. Soil classification of composite soils, exclusively based on the particle size distribution, is known
Options- A. particle classification
- B. textural classification
- C. High Way Research Board classification
- D. unified soil classification. Discuss
Correct Answer: textural classification
- 5. Fundamental relationship between dry density (?d), bulk density (?) and water content (?), is :
Options- A. ? =
- B. ?d =
- C. ? =
- D. ? =
Discuss
Correct Answer: ?d =
- 6. Pick up the correct statement from the following:
Options- A. Isotropic consolidation of clay can be obtained in the triaxial apparatus under equal all-round pressure.
- B. If the present effective stress is the maximum to which the clay has ever been subjected, it is called normally consolidated clay
- C. If the present effective stress in the past was more than present effective stress, it is called over-consolidated clay
- D. All the above. Discuss
Correct Answer: All the above.
- 7. The plasticity index is the numerical difference between
Options- A. liquid limit and plastic limit
- B. plastic limit and shrinkage limit
- C. liquid limit and shrinkage limit
- D. none of these. Discuss
Correct Answer: liquid limit and plastic limit
- 8. The minimum centre to centre distance of friction piles of 1 m diameter, is
Options- A. 2 m
- B. 2 m to 3 m
- C. 3 m to 4 m
- D. 5 m Discuss
Correct Answer: 3 m to 4 m
- 9. Coulomb's wedge theory assumes that
Options- A. back fill is dry, cohesionless, homogeneous and isotropic
- B. slip surface is the plane which passes through the heel of the wall
- C. sliding wedge itself acts as a rigid body and the value of earth pressure is obtained by considering the limiting equilibrium of the wedge
- D. position and direction of the resultant earth pressure, are known
- E. all the above. Discuss
Correct Answer: all the above.
- 10. A critical hydraulic gradient may occur when
Options- A. flow is in upward direction
- B. seepage pressure is in upward direction
- C. effective pressure is zero
- D. all the above. Discuss
Correct Answer: all the above.
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