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 structure resting on a soil_______________?

   A. decreases with the increase in the initial voids ratio
   B. decreases with the decrease in the plastic limit
   C. increases with the increase in the initial voids ratio
   D. increases with the decrease in the porosity of the soil

3. 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

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

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

5. 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

6. 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

7. 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

8. 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

9. 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

10. If the water content of a fully saturated soil mass is 100%, then the voids ratio of the sample is________________?

    A. less than specific gravity of soil
    B. equal to specific gravity of soil
    C. greater than specific gravity of soil
    D. independent of specific gravity of soil