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______________________?

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. 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

3. If a cohesive soil specimen is subjected to a vertical compressive load, the inclination of the cracks to the horizontal is__________________?

   A. 90°
   B. 45°
   C. 22.5°
   D. 0°

4. The angle that Coulomb’s failure envelope makes with the horizontal is called________________?

   A. cohesion
   B. angle of internal friction
   C. angle of repose
   D. none of the above

5. The coefficient of active earth pressure for a loose sand having an angle of internal friction of 30° is___________________?

   A. 1/3
   B. 3
   C. 1
   D. 1/2

6. Unconfmed compressive strength test is________________?

   A. undrained test
   B. drained test
   C. consolidated undrained test
   D. consolidated drained test

7. The effect of cohesion on a soil is to______________?

   A. reduce both the active earth pressure intensity and passive earth pressure intensity
   B. increase both the active earth pressure intensity and passive earth pressure intensity
   C. reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity
   D. increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity

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. Direct measurement of permeability of the specimen at any stage of loading can be made_______________?

   A. only in fixed ring type consolido-meter
   B. only in floating ring type consolido-meter
   C. both (A) and (B)
   D. none of the above

10. 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