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The seepage pressure always acts _______

(a) in the direction of flow

(b) opposite to direction of flow

(c) perpendicular to direction of flow

(d) tangential to direction of flow

I have been asked this question in quiz.

This key question is from Seepage Pressure and Upward Flow topic in section Seepage Analysis of Geotechnical Engineering I

1 Answer

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Correct option is (a) in the direction of flow

For explanation I would say: When the water flows through a soil mass, due to its viscous friction, an energy transfer is effected between water and soil. This energy transfer is seepage pressure.

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