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

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

Which of the following statements are correct?

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

P Q R S

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____________

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.