Question
Download Solution PDFBased on Allen-Hazens experiments, the co-efficient of permeabilty k (cm/s) is related to the effective size of soil D10 (cm) as _________. (where C is a constant with a value between 100 and 150).
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
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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