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Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion

Discussion Forum : Soil Mechanics and Foundation Engineering - Section 2 (Q.No. 18)
Soil Mechanics and Foundation Engineering
18.
The critical exist gradient of seepage water in soils, is
directly proportional to the voids ratio
inversely proportional to the specific gravity
directly proportional to the specific gravity
inversely proportional to the voids ratio
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
30 comments Page 2 of 3.
Dewan said:   5 years ago
Value of critical exit gradient is 1. So it doesn't depend on any factor. Hydraulic gradient depends on Specific gravity and void ratio.
Ajay said:   5 years ago
Seepage velocity = velocity gradient/porosity.

So, Answer E is correct.
Gaurav said:   5 years ago
Right @Dipu Bunku Rose.

It's critical exit gradient, not critical hydraulic gradient.
Dipu bunku rose said:   5 years ago
In question, it is Ie, not Ic.
Abdul muttalib Baloch said:   6 years ago
The critical Exit Gradient is Directly Proportional to Specific gravity and Inversely proportional to void ratio.

I = (G-1)/(1+e).
OPSE AEE said:   6 years ago
Directly proportional to G and also inversely proportional to e.

Both C & D are correct for this question.
Faruque said:   6 years ago
@All.

You may plot the variation of the critical gradient by keeping G or e constant.

You will find a straight line in the graph paper. So we can say that the critical gradient is directly proportional to G or e. So, the Correct answer is c & d.
Smarty said:   7 years ago
It is Directly proportional to potential head.
Rajat Sroha said:   8 years ago
And is right.

Because exit gradient is headloss divided by length.
Shubham Suroliya said:   8 years ago
Both c & d correct.
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