Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 3 (Q.No. 3)
3.
To make certain that the backfill material is more pervious than the soil to be drained, the relationship used in
Discussion:
9 comments Page 1 of 1.
Yasir said:
3 years ago
C is the correct answer.
Priyanka said:
3 years ago
C is the correct answer.
Amit Singh said:
4 years ago
(D15)filter/(D85)soil<5.
4<((D15)filter/(D15)soil)<20.
(D50)filter/(D50)soil<25.
Hence, option D is correct.
4<((D15)filter/(D15)soil)<20.
(D50)filter/(D50)soil<25.
Hence, option D is correct.
A Ali said:
4 years ago
C should be the right answer.
Akash said:
5 years ago
(D15)Filter ≥5 (D15)Protected soil. So, C is correct.
Dolly said:
7 years ago
According to me, C is the correct option.
Priya said:
7 years ago
Yes, it's C. I also agree.
Lara said:
8 years ago
Which is the correct answer C or D? can you explain for me?
Karan said:
8 years ago
Correct Ans is C.
Explanation : For the filter to provide full drainage.
k of filter >= 25k of protected soil.
Where k is permeability and proportional to square of particle size. So,
d15 of filter >= 5 d15 of protected soil.
Explanation : For the filter to provide full drainage.
k of filter >= 25k of protected soil.
Where k is permeability and proportional to square of particle size. So,
d15 of filter >= 5 d15 of protected soil.
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