Related Mcqs:

1. Clay layer A with single drainage and coefficient of consolidation Cv takes 6 months to achieve 50% consolidation. The time taken by clay layer B of the same thickness with double drainage and coefficient of consolidation Cv/2 to achieve the same degree of consolidation is_________________?

   A. 3 months
   B. 6 months
   C. 12 months
   D. 24 months

2. The ultimate consolidation settlement of a soil is________________?

   A. directly proportional to the voids ratio
   B. directly proportional to the compression index
   C. inversely proportional to the compression index
   D. none of the above

3. Within the consolidation process of a saturated clay__________________?

   A. a gradual increase in neutral pressure and a gradual decrease in effective pressure takes place and sum of the two is constant
   B. a gradual decrease in neutral pressure and a gradual increase in effective pressure takes place and sum of the two is constant
   C. both neutral pressure and effective pressure decrease
   D. both neutral pressure and effective pressure increase

4. Coefficient of consolidation for clays normally_______________?

   A. decreases with increase in liquid limit
   B. increases with increase in liquid limit
   C. first increases and then decreases with increase in liquid limit
   D. remains constant at all liquid limits

5. Degree of consolidation is________________?

   A. directly proportional to time and inversely proportional to drainage path
   B. directly proportional to time and inversely proportional to square of drainage path
   C. directly proportional to drainage path and inversely proportional to time
   D. directly proportional to square of drainage path and inversely proportional to time

6. Coefficient of consolidation of a soil is affected by_______________?

   A. compressibility
   B. permeability
   C. both compressibility and permeability
   D. none of the above

7. Contact pressure beneath a rigid footing resting on cohesive soil is_________________?

   A. less at edges compared to middle
   B. more at edges compared to middle
   C. uniform throughout
   D. none of the above

8. A normally consolidated clay settled 10 mm when effective stress was increased from 100 kN/m2 to 200 kN/ m2. If the effective stress is further increased from 200 kN/ m2 to 400 kN/ m2, then the settlement of the same clay is__________________?

   A. 10 mm
   B. 20 mm
   C. 40 mm
   D. none of the above

9. A 600 mm square bearing plate settles by 15 mm in plate load test on a cohesionless soil under an intensity of loading of 0.2 N/ram2. The settlement of a prototype shallow footing 1 m square under the same intensity of loading is_______________?

   A. 15 mm
   B. between 15 mm and 25 mm
   C. 25 mm
   D. greater than 25 mm

10. A 300 mm square bearing plate settles by 15 mm in a plate load test on a cohesive soil when the intensity of loading is 0.2 N/mm2. The settlement of a prototype shallow footing 1 m square under the same intensity of loading is___________________?

    A. 15 mm
    B. 30 mm
    C. 50 mm
    D. 167 mm