Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 12 (Q.No. 34)
34.
A clay layer 5 m thick in field takes 300 days to attain 50% consolidation with condition of double drainage. If the same clay layer is underlain by hard rock then the time taken to attain 50% consolidation will be
Discussion:
3 comments Page 1 of 1.
MUKESH RANA said:
4 years ago
T=(Cv * t)/d^2.
T=Constant ,Cv = Constant.
Now,
t1 = 300
D1 = H/2 - for double drainage
t2 = ?
H = 5
D2 = H - for single drainage.
300/(5/2)^2 = t2 / 5^2,
t2=(300* 4 * 25)/25.
t2 = 1200.
T=Constant ,Cv = Constant.
Now,
t1 = 300
D1 = H/2 - for double drainage
t2 = ?
H = 5
D2 = H - for single drainage.
300/(5/2)^2 = t2 / 5^2,
t2=(300* 4 * 25)/25.
t2 = 1200.
(1)
Sweety said:
5 years ago
t1=4t2.
So 300*4 =1200.
So 300*4 =1200.
(2)
Shubham said:
7 years ago
Please explain the answer with formula.
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