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UPSC Civil Service Exam Questions - Engineering

Q1:

A rectangular footing 1 m x 2 m is placed at a depth of 2 m in a saturated clay having an unconfined compressive strength of 100 kN/m2. According to Skempton, the net ultimate bearing capacity is

A 420 kN/m2

B 412.5 kN/m2

C 385 kN/m2

D 350 kN/m2

ANS:C - 385 kN/m2

Qnu = (1+0.3B/L)C Nc.
So the answer is Qnu = 442.75 kN/m2.