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GATE Civil Engineering (CE) 2020 Shift 1 Solved Paper

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Question : 44

Total: 65

The soil profile at a site up to a depth of 10m is shown in the figure (not drawn to the scale). The soil is preloaded with a uniform surcharge (q) of 70kN∕m2 at the ground level. The water table is at a depth of 3m below ground level. The soil unit weight of the respective layers is shown in the figure. Consider unit weight of water as 9.81kN/m3 and assume that the surcharge (q) is applied instantaneously.

Immediately after preloading, the effective stresses (in kPa) at points P and Q. respectively, are

54 and 95
36 and 90
36 and 126
124 and 204

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