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In __________ type of cofferdam consists of a mixture of sand and clay which is filled in a bag and placed instead of earth or rock to form a cofferdam.(a) Cellular cofferdam(b) Earth dikes(c) Rock dikes(d) Sand-bag dikesI have been asked this question in an online quiz.My question is taken from Cofferdam and Caisson in portion Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials

Answer» RIGHT choice is (d) Sand-bag dikes

Explanation: The sand-bag dykes or Sand-bag cofferdams are useful for SMALL DEPTH of water. The individual BAGS are laid in COURSES as in case of masonry work and the joints are filled with puddle.


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