Civil Engineering - UPSC Civil Service Exam Questions - Discussion

21. 

Consider the following factors pertaining to flow through soil:
1. Hydraulic gradient
2. Grain size
3. Void ratio
4. Cross-sectional area of the sample.
Of these, the factors affecting permeability include

[A]. 1 and 4
[B]. 2 and 3
[C]. 1, 2 and 3
[D]. 2, 3 and 4

Answer: Option B

Explanation:

No answer description available for this question.

Robi said: (Jan 16, 2018)  
A is correct. Here, Q= I *k *A.

Mohsin said: (Apr 5, 2018)  
It is regarding factors affecting the permeability of the soil and not the flow through the soil. Therefore permeability of soil depends on soil characteristics like grain size and void ratio.

Amith S said: (Aug 19, 2018)  
K = shape factor * [e^3/1+e] * d10 * [unit weight of water/dynamic viscosity].

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