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.

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.

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

It is unit of the coefficient of permeability.

UJWALA PRASAD said:   1 decade ago
q = kh (Nf/Nd) you will get the answer.

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

Dhanu said:   8 years ago
Yes, 200 % k value is cm/sec.

Roy said:   8 years ago
As I know the coefficient of permeability's unit is cm/s.

Chintu said:   9 years ago
Excellent explanation. Thank you all.

Aliabryne said:   9 years ago
K = 3 * 10^3 cm per sec (convert this to metre) = 3 * 10^5m per sec.

Q = Kh (Nf/Nd) , after putting the values, we get 24 * 10^5.

Raju raut said:   9 years ago
We know discharge (Q) = kH x number of flow channel/ number of Drops.

Where k = coeff of permeability and H = water head.

Swathi said:   10 years ago
The unit of k is cm^2 per second.


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