Double Wall Sheet Pile Cofferdam Design. Sometimes an inside berm is provided to keep the pheratic surface within the berm. Cofferdam types of cofferdam. The space between the walls is generally filled with granular material such as sand gravel or broken rock.
A double wall sheet piling cofferdam comprises two straight parallel vertical walls of sheet piling tied to each other. Sometimes an inside berm is provided to keep the pheratic surface within the berm.
They are cofferdams comprising two parallel rows of sheet piles driven into the ground and connected together by a system of tie rods at one or more levels.
This consists of two straight parallel vertical wall of sheet piling tied to each other and the space between them filled with soil. A cofferdam may be defined as a temporary structure that is constructed on a river or a lake or any other water bearing surface for excluding water from a given site to execute the building operation to be performed on dry surface. They are cofferdams comprising two parallel rows of sheet piles driven into the ground and connected together by a system of tie rods at one or more levels. Sometimes an inside berm provides to take the phreatic line.
