What is a cofferdam and its types?
The cofferdam is a temporary structure to exclude water from water-logged soil, river, or the sea to enable the excavation and construction to be carried out in the dry. Cofferdams are most commonly used to facilitate the construction or repair of dams, piers, and bridges. The cofferdam can be made out of the earth, concrete, sheet piles, or sheet cell. There are different […]