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GATE (CE) 2022: SOIL MECHANICS #21 (App update required to attempt this test)

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Question 1

The major principal stress at failure of a soil sample in confined compression test is 100kN/m2 and makes 50o angle with horizontal. Find the shear parameter c and ɸ

Question 2

Which of the following statements are correct?

Question 3

A soil sample of size 0.1m x 0.1m is subjected to the forces as shown in figure 3.1. Determine the major principal stress and minor principal stress.

Question 4

Match List I and List II and determine the correct representation of the soil structure

P Q R S

Question 5

At the construction site, 4m thick clay layer is followed by 5m thick gravel layer which rest on an impervious rock. A surcharge of 20 is applied at surface. Saturated unit weight of clay is 18.5 and for gravel is 20 . If water table is at ground level, then the effective stress at the bottom____________

Question 6

An embankment 6 m high is made of soil having effective stress parameter are c’ = 40 kN/m2 and φ’ = 15 and ϒ = 17.2 kN/m3. The triaxial test pore pressure parameters are A = 0.44 and B = 0.9. Calculate the shear strength of the soil (in kN/m2) at base of embankment after the fill has been raised by 3 m. Assume that the dissipation of pore pressure is negligible and at any point lateral pressure can be taken as one third of vertical pressure at that point.
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Jan 10ESE & GATE CE