Correct Answer - Option 4 : All of the above
Explanation
Coefficient of permeability ‘k’ is given by:
\(k = C \times \left( {\frac{{\rm{\gamma }}}{\mu }} \right) \times \left( {\frac{{{e^3}}}{{1 + e}}} \right) \times {D^2}\)
where
e = void ratio
D = effective size of soil particle
γ = weight density of fluid
μ = viscosity of fluid
c = constant (depends upon the shape of particle)
∴ Coefficient of permeability depends upon shape of particles, diameter of particles and void ratio.
