Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion

Discussion Forum : Soil Mechanics and Foundation Engineering - Section 5 (Q.No. 29)
29.
Pick up the correct statement from the following:
When stress decreases, void, ratio decreases
When stress decreases, coefficient of permeability decreases
When stress decreases, coefficient of volume change decreases
When stress decreases void ratio, co-effi-cients of per-meability and volume change decrease.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
14 comments Page 2 of 2.

Aamir said:   8 years ago
I think c is right.

Nathu said:   8 years ago
Av = e1-e2 / q1-q2

if q decrease then the coefficient of compressibility (Av) increases. and void ratio e = e1 - e2 decreases due to increase in stress

If Av increases then Mv = Av/1+e, Mv also increases.

then the permeability K = Cv . Mv . Yw if Mv increases then K also increases.

Pleo said:   6 years ago
I think option B is correct.

Nikhil Dongre said:   5 years ago
Correct, Thanks @Nadeem Qadir.


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