SSC_JE_CE_Soil Mechanics Boster Quiz -8

Which one of the following is the best method for the stabilization of the clayey subgrade in water logged area?

Saturated unit weight of a soil is 20 KN/m³ and unit weight of water is 10 KN/m³. If the ground water table is at the surface of soil and lateral earth pressure coefficient of soil is 0.4, effective lateral stress at 10 m depth will be:

Given that for a sample

Critical void ratio = 0.50

Initial void ratio = 0.60

If the sand sample is subjected to continued shear, its volume will:

An initial cross section area of a clay sample was 15 sq. cm. The failure strain was 25 % in an unconfined compression test. The corrected area of the sample at failure would be:

Consider the following statements relating to triaxial tests:

a. Change in length of the specimen in a triaxial shear test is required to be accounted for the calculation of stresses at failure

b. In Drained Triaxial Shear test, drainage is permitted under a specified all-round pressure until consolidation is complete. The principal stress difference is then applied with no drainage being permitted.

c. Unconfined compression test is a special case of triaxial shear test

Of these statements:

Which one of the following represents the correct relationship between seepage pressure (p_s), unit weight of water (γ_w) and hydraulic gradient (i) inside an earth dam?

Given that coefficient of curvature = 1.5,  Based on this information of particle size distribution for use as subgrade, this soil will to be

The void ratio of a soil is defined as the ratio of the

In a three-layered soil, water flows parallel to stratification. The thickness of the middle layer is twice that of top and bottom layer. The coefficient of permeability of middle layer (2k) is twice that of top and bottom layer (k). What is the average coefficient of permeability for this flow?

When effective stress on a normally consolidated clay is increased from 25 kN/m² to 50 kN/m², settlement becomes 5 mm. If the stress is increased to 175 kN/m², settlement will increase to (assuming coefficient to volume decrease to be constant):