The major principal stress in an element of cohesionless soil within the backfill of a retaining wall is________________?

Related Mcqs:

1. A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant active earth pressure will act at a distance of 2 m above the base and inclined to the horizontal at an angle of_________________?

   A. 7° B. 10° C. 12° D. 17°...

2. 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...

3. In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on__________________?

   A. horizontal plane only B. vertical plane only C. both horizontal and vertical planes D. all planes except horizontal and vertical planes...

4. Rise of water table in cohesionless soils upto ground surface reduces the net ultimate bearing capacity approximately by________________?

   A. 25% B. 50% C. 75% D. 90%...

5. Total number of stress components at a point within a soil mass loaded at its boundary is______________?

   A. 3 B. 6 C. 9 D. 16...

6. A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m2 when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively______________________?

   A. 0.5 N/mm2 and 30° B. 0.05 N/mm2 and 0° C. 0.2 N/mm2 and 0° D. 0.05 N/mm2 and 45°...

7. 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...

8. If the shearing stress is zero on two planes, then the angle between the two planes is________________?

   A. 45° B. 90° C. 135° D. 225°...

9. 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...

10. 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...