Define permeability and coefficient of permeability

Define permeability and coefficient of permeability 
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1 Answer

Answer :

Definition

i) Permeability (k) “It is defined as the properly of soli which permits the seepage of fluid through interconnecting voids under gravity

OR

Permeability (k) It is defined as the speed at which the water flows through voids under unit head at unit hydraulic gradient 

ii) Coefficient of permeability

 It is defined as velocity of flow under a unit hydraulic gradient through soil mass

 It is measured in cm / sec or mm / sec or m / sec or m / day

 Mathematically, it is represented as K = v/i

 Where v = discharge velocity in m/s

i = hydraulic gradient
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