what is the purpose of a cofferdam
What Is a Cofferdam? A cofferdam is a temporary enclosure in or around a body of water that is constructed to allow dewatering, diversion or damming of an enclosed area. The primary purpose of a cofferdam is to create a dry environment for a project to proceed. They were first used in 1736. Todayâs cofferdams are typically conventional embankment dams of both earth-