__________ it suitable when available working space is limited and the area to be enclosed is small.(a) Single wall cofferdam(b) Double wall cofferdam(c) Dikes(d) Concrete cofferdamThe question was asked during an internship interview.The doubt is from Cofferdam and Caisson in portion Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials

__________ it suitable when available working space is limited and the

1.	__________ it suitable when available working space is limited and the area to be enclosed is small.(a) Single wall cofferdam(b) Double wall cofferdam(c) Dikes(d) Concrete cofferdamThe question was asked during an internship interview.The doubt is from Cofferdam and Caisson in portion Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials
Answer» Correct answer is (a) Single wall COFFERDAM The best I can explain: Single wall COFFERDAMS is suitable up to a maximum depth of water of 25 m. In this type of cofferdam, a single ROW of Piles is used on EITHER side of the cofferdam. The sheet pile maybe of wood or steel. The wooden piles are generally used for depth of water up to about 10 m.

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