Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 2 (Q.No. 46)
46.
In a three-layered soil, water flows parallel to stratification. The thickness of the middle layer is twice that of top and bottom layer. The coefficient of permeability of middle layer (2K) is twice that of top and bottom layer (K). What is the average coefficient of permeability for this flow ?
Discussion:
6 comments Page 1 of 1.
Himanshu khandelwal said:
8 years ago
first layer=k(1)=k.
second layer=k(2)=2k(given).
third layer=k(3)=k.
first layer thickness=H.
second layer thichness=2H.
third layer thickness=H.
Average(k) = k * H+2k*2H+k*H/H+2H+H=1.5k.
second layer=k(2)=2k(given).
third layer=k(3)=k.
first layer thickness=H.
second layer thichness=2H.
third layer thickness=H.
Average(k) = k * H+2k*2H+k*H/H+2H+H=1.5k.
Manjunath Reddy said:
4 years ago
Yes, you are correct @imanshu Khandelwal.
Chintu said:
8 years ago
@Saba.
How 4k/4 is 1.33?
How 4k/4 is 1.33?
ARYA said:
8 years ago
Here, [K+2K+K]/3 = 1.33.
Saba said:
10 years ago
(k+2k+k)/4 = 1.33.
Darshan said:
8 years ago
Correct @Himanshu.
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