Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion

Discussion Forum : Soil Mechanics and Foundation Engineering - Section 2 (Q.No. 23)
23.
For a homogeneous earth dam 50 m high having 2 m free broad, a flow net was constructed and the results were : Number of potential drops = 2.4 Number of flow channels = 0.4. If coefficiency of permeability of the dam mateiral is 3 x 10-3 cm3/sec, the discharge per metre length of dam, is
12 x 10-5 m3/sec
24 x 10-3 m3/sec
6 x 10-5 m3/sec
24 x 10-5 m3/sec
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
22 comments Page 2 of 3.

Nayan said:   8 years ago
K unit is same as velocity cm/sec.

Mayur said:   7 years ago
Thank you all for explaining this.

Vivek said:   7 years ago
K will be in cm/sec.

It is unit of the coefficient of permeability.

Sushma Thota said:   7 years ago
The discharge PER METER is asked, so the calculated answer must be divided by 100
since 1m=100cm.

So, the given units and given answer are correct.

Jessica said:   6 years ago
Thank you All for explaining.

Keeda said:   5 years ago
Unit of K is cm/sec.

Er Amit Kumar said:   5 years ago
Given data,
K = 3*10^-3cm3/sec
(0.003/100) = 0.00003 m3/sec, OR
3*10^-5m3/sec.

H = (50 -2 ) 48 m.
Nf = .4
Nd = 2.4
Than formula,
Q = kh* (Nf / Nd)

Q = .00003 * 48 * (.4 / 2.4
Q = 0.00024 OR 24*10^-5 m3/sec.
(1)

Hadiul Islam said:   4 years ago
Given data,


K = 3*10^-3cm3/sec.
(0.003/100) = 0.00003 m3/sec, OR.
3*10^-5m3/sec.

H = (50 -2 ) 48 m.
Nf = .4,
Nd = 2.4,

Then formula;
Q = kh* (Nf/Nd).

Q = .00003 * 48 * (.4/2.4)
Q = 0.00024 OR 24*10^-5 m3/sec.
(2)

Dipak singh said:   4 years ago
How q=kh (hf/nd)? Please prove it.
(3)

Atem Akech Atem said:   4 years ago
How q=k.h/Nd.Nf? Prove it.
(1)


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