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GATE 2023 Soil Mechanics & Foundation Engineering Quiz 68

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Question 1

Consider the following statements regarding Punching shear failure:

1) Punching shear failure is typical in soils possessing brittle type stress-strain behaviour.

2) Soil zones beyond the loaded area are little affected in case of Punching shear failure.

3) It is characterised by poorly defined shear planes

4) The load-settlement curve indicate that failure is abrupt

Which of the above statement are correct?

Question 2

A footing  in a plan, transmits a pressure of  on a cohesive soil have  and . What will be the immediate settlement of the footing at the center? Take influence factor = 1.5

Question 3

A strap footing is to be provided for the two columns shown in the diagram given below.

What is the minimum length  of the footing? Take width of  both footing as  and safe bearing capacity of soil as 400

Question 4

Who made the assumption that a strip footing placed on the ground surface sinks vertically downwards in to the soil at failure?

Question 5

A floating raft foundation 12m wide and 14 m long is to be constructed in a clayey soil having undrained shear strength of 14 kN/m2. Unit weight of soil is 16 kN/m2. The ground surface carries a surcharge of 24 kN/m2, the factor of safety is 1.2 and value of Nc = 5.7. The safe depth of foundation will be nearly.

Question 6

A raft of 9 m × 15 m is founded at a depth of 3.5 m in a cohesive soil having C = 120 kN/m2. The net ultimate bearing capacity of soil using Terzaghi’s theory will be nearly. [Take NC = 5.7]
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Nov 11ESE & GATE CE