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The critical hydraulic gradient is given by...

The critical hydraulic gradient is given by _______

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+1 vote

asked Feb 8, 2022 in Geotechnical Engineering I by Sophia (102k points)

The critical hydraulic gradient is given by _______

(a) ic = γ’/ γw

(b) ic = γ’+ γw

(c) ic = γ’-γw

(d) ic = γ’

The question was posed to me in a national level competition.

The question is from Seepage Pressure and Upward Flow topic in portion Seepage Analysis of Geotechnical Engineering I

geotechnical engineering i
seepage analysis
seepage pressure and upward flow

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1 Answer

+1 vote

answered Feb 9, 2022 by Oliver (727k points)
selected Sep 18, 2022 by Sophia

Best answer

Correct answer is (a) ic = γ’/ γw

Best explanation: In quick condition,

ps=z γ’

iz γw=z γ’

∴ i= ic= γ’/ γw.

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