Civil Engineering - Water Supply Engineering - Discussion

Discussion Forum : Water Supply Engineering - Section 1 (Q.No. 9)
9.
The specific retention is least in case of
Clay
Sand
Silt
Coarse gravel.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
13 comments Page 1 of 2.

Rohit Kumar said:   3 years ago
Porosity is a measure of volume of voids. But not big voids (as in case of gravel).

Whereas permeability is the ability of any material to pass fluid from its voids.

Monika said:   5 years ago
Thanks @Thanveer.

Rizu said:   5 years ago
Porosity and permeability are not inversely promotional. Both are separate concepts.

Amu bokato said:   5 years ago
Thanks a lot @Thanveer.

Pankaj said:   6 years ago
Clay is the answer here because rack can't retend water.

Shishir said:   7 years ago
Is porosity and permeability are inversely proportional?

Surya rao said:   7 years ago
Yes sir, your reason is absolutely correct, thank you @Thanveer.
(1)

Gopal said:   8 years ago
Well said @Thanveer.

P S Thanveer said:   8 years ago
Specific retention as the word itself says that how much water can be stored in a rock against the gravity. And in coarse gravel the size of voids is so large that it can't store water in it. Therefore the Sr for CG is least and more for clay.
(4)

Bibek Sapkota said:   8 years ago
Voids are more in gravel but porosity is more on clay.


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