Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 22 (Q.No. 25)
25.
A flownet for an earth dam on impervious foundation consists of 4 flow channels and 15 equipotential drops. The full reservoir level is 15 m above the downstream horizontal filter. Given that horizontal permeability is 9 x 10-6 m/s and vertical permeability is 1 x 10-6 m/s, the quantity of seepage through the dam will be
Discussion:
5 comments Page 1 of 1.
Rahul verma said:
2 years ago
The right answer is 12.
(1)
Apcivilian said:
3 years ago
Yes, it's 12. Agree @Harish.
Priyanka said:
4 years ago
Yes, I agree @Harish.
Harish said:
7 years ago
Equivalent permeability.
ke =sq root ( kx * ky) =3 * 10^6 m/s.
Seepage q= ke x H x Nf/Nd.
= 12 x 10-6m3/s/m.
=12ml/s/m.
ke =sq root ( kx * ky) =3 * 10^6 m/s.
Seepage q= ke x H x Nf/Nd.
= 12 x 10-6m3/s/m.
=12ml/s/m.
(1)
Umesh JIT said:
7 years ago
Q = KH (Nf/ND).
K= √(Ky /Kx).
K= √(Ky /Kx).
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