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UPSC Civil Service Exam Questions - Engineering

Q1:

Under load, the void ratio of a submerged saturated clay decreases from 1.00 to 0.92. What will be the ultimate settlement of the 2 m thick clay due to consolidation ?

A 20 mm

B 40 mm

C 80 mm

D 160 mm

ANS:C - 80 mm

B is the answer..........
Ultimate settlement =( initial void ratio - final void ratio)/(1+ initial void ratio).
= (1-0.92) /(1+1).
= 0.08/2= 0.04.
40 mm.