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In ______ direction of flow, the effective pressure is increased.

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+1 vote
in Geotechnical Engineering I by (102k points)
In ______ direction of flow, the effective pressure is increased.

(a) perpendicular

(b) tangential

(c) upward

(d) downward

I had been asked this question in exam.

Asked question is from Seepage Pressure and Upward Flow topic in division Seepage Analysis of Geotechnical Engineering I

1 Answer

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by (727k points)
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Best answer
Right choice is (d) downward

Easy explanation: The effective pressure subjected to seepage pressure is given by,

σ’=zγ’± ps = zγ’±izγw. If the flow occurs in downward direction, + sign is used. If the flow occurs in upward direction – sign is used.

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