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ExamsGATETechnical

A 2 m wide strip footing is founded at a depth of 1.5 m below the ground level in a homogeneous pure clay bed. The clay bed has unit cohesion of 40 kPa. Due to seasonal fluctuations of water table from peak summer to peak monsoon period, the net ultimate bearing capacity of the footing, as per Terzaghi’s theory, will

  1. remain the same
  2. decrease
  3. increase
  4. become zero

Correct answer: remain the same

Solution

The net ultimate bearing capacity of the footing remains the same because it is determined by the soil's cohesion and the depth of the footing, which are not affected by seasonal fluctuations in the water table in a homogeneous clay bed.

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