Describe in brief caisson foundation for a bridge with neat sketch

Describe in brief caisson foundation for a bridge with neat sketch
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Caisson foundation A caisson foundation also called as pier foundation is a watertight retaining structure used as a bridge pier in the construction of a concrete dam or for the repair of ships. It is a prefabricated hollow box or cylinder sunk into the ground to some desired depth and then filled with concrete thus forming a foundation.

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