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Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 25 (Q.No. 36)
UPSC Civil Service Exam Questions
36.
A flownet constructed to determine the seepage through an earth dam which is homogeneous but anisotropic, gave four flow channels and sixteen equipotential drops. The coefficients of permeability in the horizontal and vertical directions are 4 x 10-7 m/s and 1.0 x 10-7 m/s, respectively. If the storage head was 20 m, then the seepage per unit length of the dam (in m3/s) would be
5 x 10-7
10 x 10-7
20 x 10-7
40 x 10-7
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
6 comments Page 1 of 1.
Abhishek thakur said:   4 years ago
Remember one thing if the material is anisotroic then you have a need of permeability.

But if material is homogenous and isptropic only horizontal permeability is considered.
Abhishek thakur said:   4 years ago
Remember one thing if the material is anisotroic then you have a need of permeability.

But if material is homogenous and isptropic only horizontal permeability is considered.
Koushik Ghoshal said:   5 years ago
Thank you for explaining.
Rupesh said:   6 years ago
@Mantaj.

Thank you.
Karan Garach said:   8 years ago
Q=KH Nf/Nd.
Where K = √Kv*Kh.
Mantaj said:   1 decade ago
Root(4*10^-7*1*10^-7)*20*(4/16) = 10*10^-7.
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