Cofferdams Big Bag

Cofferdams Big Bag/Bulk Bag Cofferdams/Cofferdam bags

Cofferdams big bag（also known as bulk bag cofferdams, or cofferdam bag), as its name implies, a bag can be applied to building a temporary cofferdam to hold back water and avoid damage following by a flood, or to enclose an area and remove the full filled water, then can allow construction work below the waterline, or to protect the marine creatures from water engineering.

General speaking, a sandbag, a jumbo bag (a bulk bag) and meter bag all can work as the cofferdams big bag. They can be the perfect option with the following reasons:

1. When the temporary cofferdam is not needed any more, they can be deployed and removed quickly

2. Based on the real surrounding, they can be constructed to any configuration

3. According to the specific various heights, the very irregular river beds, and the variable depths of river, a cofferdam can be built at a reasonable height.

When we use them as cofferdam big bags, we must pay attention to keep the working location dry. We also need to prepare a polyethylene tarp to reduce the seeping from the bags' crevice and further seal the area. The cofferdams big bags can be filled with sand（grit）and clean gravel up to 95% capacity.