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Discussion :: UPSC Civil Service Exam Questions - Section 18 (Q.No.11)

11. 

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

Answer: Option C

Explanation:

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Sindhu Gond said: (Jul 29, 2017)  
del h/H=del e/1+e,
del h = 1-0.92/2*2 = 0.08m,
80mm.
Sudip Ghosh said: (Apr 19, 2020)  
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.
Yaro Ivan said: (Jul 28, 2021)  
∇ h/H = ∇ e/1+e
∇h/2=1-0.92/1+1
∇ h/2=0.04.
Finally, ∇ h=0.08=80mm.

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