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Heave piping may occur on the _______________

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in Irrigation Engineering by (75.2k points)
Heave piping may occur on the _______________

(a) downstream of sheet pile or cut off wall

(b) upstream of sheet pile or cut off wall

(c) body of earth structure

(d) below the foundation

I got this question in unit test.

Question is from Seepage Theories in section Seepage Theories and Weirs and Barrages Design of Irrigation Engineering

1 Answer

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by (106k points)
Right choice is (a) downstream of sheet pile or cut off wall

Explanation: As per Terzaghi, heave piping may occur within a distance of D/2 on the downstream of sheet pile where D is the embedment depth of sheet pile. The entire soil mass in the zone gets heaves up and is blown out by the percolating water when the seepage pressure at any level is greater than the submerged weight of soil above that level.

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