During the first stage of triaxial test when the cell pressure is increased from 0.10 N/mm2 to 0.26 N/mm2, the pore water pressure increases from 0.07 N/mm2 to 0.15 “N/mm2. Skempton’s pore pressure parameter B is___________________?

Related Mcqs:

1. In a triaxial compression test when drainage is allowed during the first stage (i. e. application of cell pressure) only and not during the second stage (i.e. application of deviator stress at constant cell pressure), the test is known as__________________?

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

2. Skempton’s pore pressure coefficient B for saturated soil is________________?

   A. 1
   B. zero
   C. between 0 and 1
   D. greater than 1

3. 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

4. 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

5. 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

6. 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

7. In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear________________?

   A. decreases
   B. increases
   C. remains unchanged
   D. first increases and then decreases

8. 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

9. Unconfmed compressive strength test is________________?

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

10. 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