Civil Engineering - Water Resources Engineering - Discussion
Discussion Forum : Water Resources Engineering - Section 3 (Q.No. 44)
44.
When a constant discharge 2.91 litres/sec. was obtained in a pumping test, the draw downs in the test wells at 3 m and 6.184 m were 2.6 m and 0.3 m respectively. If over-all depth of the pumping well was 16 m, the permeability of the soil, is
Discussion:
7 comments Page 1 of 1.
Tubai said:
6 years ago
K = ((2.91/1000).ln(6.184/3))/(3.14*((16-0.3)^2-(16-2.6)^2)).
= 1.001 * 10^(-5) m/s,
= 0.001 cm/s.
= 1.001 * 10^(-5) m/s,
= 0.001 cm/s.
Raaj said:
7 years ago
Thank you @Ranjitha.
Mka said:
7 years ago
I think D is correct 0.01cm/s.
Ranjitha said:
8 years ago
k= (2.303*Q*log(r2/r1))/(r*(h2^2-h1^2)),
= (2.303*(2.91/1000)*log(2.6/0.3))/(16*(6.184^2-3^2),
= 0.0000134 m/s,
= 0.001 cm/s.
= (2.303*(2.91/1000)*log(2.6/0.3))/(16*(6.184^2-3^2),
= 0.0000134 m/s,
= 0.001 cm/s.
Swati said:
9 years ago
Explain please.
(1)
Tarun Deb nath said:
9 years ago
Please explain how?
Siva said:
10 years ago
Can you explain how?
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