Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 3 (Q.No. 28)
28.
Following data are given for two soil samples A and B :
Sample A : Void ratio = 1, total volume = 1 m3
Sample B : Void ratio = 2, total volume = 1 m3.
The two samples are mixed and compacted in a mould to a volume of 1 m3. Which one of the following figures correctly indicates the porosity of the compacted soil ?
17%
54%
60%
83%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
14 comments Page 2 of 2.

Chhaya said:   8 years ago
Thanks @ Mayank.

Mayank said:   9 years ago
Vs in 1st sample = .5V.
Vs in 2nd sample = .33V.

Vv = V - Vs = 1 -(.5 + .33).
Thus n = Vv/V = .166.

Saksham said:   10 years ago
How? Can you give solution please?

MAYANK said:   10 years ago
Correct answer should be 20%.


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