A ______ caisson is open at top and closed at bottom.(a) Wells(b) Pneumatic caissons(c) Cylinders(d) Box caissonsI have been asked this question in an internship interview.Query is from Classification of Caissons in chapter Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials

A ______ caisson is open at top and closed at bottom.(a) Wells(b) Pneu

1.	A ______ caisson is open at top and closed at bottom.(a) Wells(b) Pneumatic caissons(c) Cylinders(d) Box caissonsI have been asked this question in an internship interview.Query is from Classification of Caissons in chapter Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials
Answer» Right choice is (d) Box caissons For explanation: Box CAISSON is merely a variation of the Suspended type cofferdam. The box caissons MAY be built of reinforced concrete, steel or TIMBER. Condition for box caisson is that the depth of water is about 6 METERS to 8 meters.

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