Question

Which of the following statements is correct?
1. The greater the unit weight, the greater is permeability
2. Unit weight does not affect permeability
3. The greater the viscosity, the greater is permeability
4. The greater the unit weight, the smaller is permeability

Answer 1

Correct Answer - Option 1 : The greater the unit weight, the greater is permeability

Explanation:

Permeability(k): The permeability of a soil is a property that describes quantitatively, the ease with which water flows through that soil.

\(k= d^2 e^3/(1+e) (γ/μ)k_1 1/k_2 1/k_3 1/k_4\)

where, 

e = void ratio

d = size of a grain

γ = unit weight of the fluid

μ = viscosity of fluid

k₁ = degree of saturation

k₂ = entrapped gases

k₃ = foreign impurities

k₄ = adsorbed water