1
GATE CE 2022 Set 2
Numerical
+2
-0

A saturated compressible clay layer of thickness h is sandwiched between two sand layers, as shown in the figure. Initially, the total vertical stress and pore water pressure at point P, which is located at the mid-depth of the clay layer were 150 kPa and 25 kPa, respectively. Construction of a building caused an additional total vertical stress of 100 kPa at P. When the vertical effective stress at P is 175 kPa. The percentage of consolidation in the clay layr at P is _________. (in integer)

GATE CE 2022 Set 2 Geotechnical Engineering - Compressibility and Consolidation Question 5 English

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2
GATE CE 2022 Set 2
Numerical
+1
-0

A concentrically loaded isolated square footing of size 2 m $$\times$$ 2 m carries a concentrated vertical load of 1000 kN. Considering Boussinesq's theory of stress distribution, the maximum depth (in m) of the pressure bulb corresponding to 10% of the vertical load intensity will be _________. (round off to two decimal all places)

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3
GATE CE 2022 Set 2
MCQ (Single Correct Answer)
+2
-0.67

A soil sample is underlying a water column of height h1, as shown in the figure. The vertical effective stresses at point A, B and C are $$\sigma {'_A}$$, $$\sigma {'_B}$$ and $$\sigma {'_C}$$ respectively. Let $$\gamma$$sat and $$\gamma$$' be the saturated and submerged unit weights of the soil sample, respectively and $$\gamma$$w be the unit weight of water. Which one of the following expressions correctly represents the sum ($$\sigma {'_A}$$ + $$\sigma {'_B}$$ + $$\sigma {'_C}$$) ?

GATE CE 2022 Set 2 Geotechnical Engineering - Effective Stress and Permeability Question 5 English

A
(h1 + h2 + h3)$$\gamma$$sat
B
(2h2 + h3)$$\gamma$$'
C
(h2 + h3) ($$\gamma$$sat $$-$$ $$\gamma$$w)
D
(h1 + h2 + h3)g'
4
GATE CE 2022 Set 2
MCQ (Single Correct Answer)
+1
-0.33

Read the following statements :

(P) While designing a shallow footing in sandy soil, monsoon season is considered for critical design in terms of bearing capacity.

(Q) For slope stability of an earthen dam, sudden drawdown is never a critical condition.

(R) In a sandy sea beach, quicksand condition can arise only if the critical hydraulic gradient exceeds the existing hydraulic gradient.

(S) The active earth thrust on a rigid retaining wall supporting homogenous cohesionless backfill will reduce with the lowering of water table in the backfill.

Which one of the following combinations is correct?

A
(P)-False, (Q)-True, (R)-False, (S)-False
B
(P)-False, (Q)-True, (R)-True, (S)-True
C
(P)-True, (Q)-False, (R)-False, (S)-False
D
(P)-True, (Q)-False, (R)-True, (S)-True
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