Cofferdams are temporary structures built to create a dry working environment for construction projects in or near water.

Sheet pile cofferdams are commonly used for deep excavations due to their ability to withstand high water pressure and provide a secure working environment.

Cofferdams are used in bridge construction to create a dry working environment for the construction of bridge piers and abutments.

Cellular cofferdams are suitable for use in areas with strong currents due to their ability to dissipate wave energy and resist erosion.

Dewatering in cofferdam construction is done to lower the water table and create a dry working environment for construction activities.

Rockfill cofferdams are commonly used for temporary water diversion due to their ability to be quickly constructed and easily removed.

Cellular cofferdams can withstand higher water pressure compared to sheet pile cofferdams due to their cellular structure, which distributes the water load more evenly.

Rockfill cofferdams are suitable for use in rocky or uneven riverbeds due to their ability to conform to irregular surfaces and provide a stable working environment.

Struts in a cofferdam are used to provide stability to the cofferdam walls and prevent them from collapsing under water pressure.

Cellular cofferdams are commonly used in marine construction due to their ability to withstand wave action and provide a stable working environment.

Trestles in cofferdam construction are used to provide access to the working area within the cofferdam, allowing workers and equipment to enter and exit the site.

Gravity cofferdams are suitable for use in shallow water due to their reliance on their own weight for stability, rather than relying on external bracing or support.

Sump pumps in cofferdam construction are used to remove water from the cofferdam, helping to maintain a dry working environment.

Sheet pile cofferdams are suitable for use in areas with limited space due to their relatively small footprint and ability to be installed in tight spaces.

Cofferdam seals are used to prevent water leakage through the joints and gaps between cofferdam components, ensuring a dry working environment.