Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion

Discussion Forum : Soil Mechanics and Foundation Engineering - Section 3 (Q.No. 35)
35.
If the coefficients of volume change and compressibility of a soil sample are respectively 6.75 x 10-2 and 3 x 10-2, the void ratio of the soil sample, is
1.10
1.15
1.20
1.25
1.30
Answer: Option
Explanation:

Coeff.compressibility = Coeff.volume change/(1 + e).

(1 + e) = Coeff.volume change/Coeff.compressibility.

e = (Coeff.volume change/Coeff.compressibility) - 1.

e = ((6.75 x 10-2)/(3 x 10-2)) - 1.

e = 2.25 - 1.

e = 1.25.

Discussion:
17 comments Page 2 of 2.

RAJU said:   8 years ago
Mv=Cv/1+e.

Prasenjit said:   8 years ago
Cc!=cv/1+e0,
Cc =6.75*10 power -2,
Cv=3*10 power -2,
Ans 1.25.

Murali said:   8 years ago
Yes, Correct @Yogesh.

Aamir said:   8 years ago
You are correct @Yogesh.

Yogesh said:   9 years ago
Coeff of vol change = coeff of compressibility/(1+eo).

Maybe the question is jumbled, if we take Coeff of vol change as 3 x 10-2 & coeff of compressibility as 6.75 x 10-2 the answer 1.25 is correct.

Jcr said:   9 years ago
Coeff. compressibility = coeff.volume change * (1 + e).

Coeff. compressibility> Coeff.volume change always => So I think the question is incorrect.

CH SWAMY said:   1 decade ago
coeff. compressibility = coeff.volume change/ (1 + e).


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