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Identify the Method used for the dewatering of the foundation trenches.(a) Pumping(b) Freezing process(c) Electro osmosis process(d) Well Point SystemI have been asked this question in an international level competition.My enquiry is from Deep Excavations in section Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials

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Correct answer is (d) WELL Point System

Easiest explanation: Well Point System consists of a well POINTS, riser, swinger arm, and header. The area to be DEVOTED is surrounded by NUMBER of well points. The MINIMUM spacing between the well points is 1 m.



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