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The coefficient of permeability of clean gravel is _________

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in Geotechnical Engineering I by (102k points)
The coefficient of permeability of clean gravel is _________

(a) 1*10^-6 and smaller

(b) 5*10^-4 – 1*10^-5

(c) 1 – 1*10^-2

(d) 1 and greater

The question was posed to me in an online interview.

The query is from Permeability in chapter Permeability of Geotechnical Engineering I

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Right answer is (d) 1 and greater

To explain I would say: The coefficient of permeability of clay, silt and clean coarse sand are 1*10^-6 and smaller, 5*10^-4 – 1*10^-5 and  1 – 1*10^-2 respectively.

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