Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 8 (Q.No. 31)
31.
If the time required for 60% consolidation of a remoulded soil sample of clay with single drainage is t, then what is the time required to consolidate the same sample of clay with the same degree of consolidation but with double drainage ?
4 t
2 t
t/2
t/4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.

Pooja said:   8 years ago
For the same degree of consolidation,

t1/t2=(d1/d2)^2

single drainage t1=t;d1=H

Double drainage t2=?; d2=h/2.
t2=t*((H/2)/H)^2=t/4.
(1)

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