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Who concluded that linear dependency of the velocity and hydraulic gradient existed if the effective size of soil did not exceed 3 mm?

Who concluded that linear dependency of the velocity and hydraulic gradient existed if the effective size of soil did not exceed 3 mm? Correct Answer Allen Hazen

Concept:

Allen Hazen:

Allen Hazen(1892) concluded that linear dependency of the velocity and hydraulic gradient existed if the effective size of soil did not exceed 3 mm.

Allen Hazen's formula:

The coefficient of permeability of a soil is proportional to the square of representative particle size.

K = C × D102

Here  K = Coefficient of permeability

C = A constant, which is taken as 100

D10 = Particle size in mm (it is expressed such that 10% particles are finer than this size)

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