The patented* cofferdam system is a reusable cofferdam designed to withstand the toughest water diversion projects that demand a strong, effective, and safe coffer dam system. Cofferdams are typically used in the redirection/diversion of hydraulic energy such as water, in order to isolate an area for construction work and to allow workers protection from the surrounding body of water. Cofferdams can be subjected to many forces that can influence its design. This might include forces acting from water, large current velocities acting on the cofferdam, flooding and/or overtopping, floating debris such as logs, river bed topography, and seepage. Holding back and diverting water can bring a multitude of problems for different types of cofferdams. Onsite conditions affect every type of cofferdam differently. Rocky or an excessive boulder presence at the work site might cause complications for driven sheet piles and giant sand bag dams. While high velocity flows, which are multiplied in the event of a flood situation, can erode the foundation and sweep away earthen fill dams.

The coffer dam system combines ingenuity, steel, and earthen materials to create a solid, resilient barrier. It is designed and engineered to withstand the most difficult demands. Our engineered coffer dam system has been put through the toughest tests, with standing high velocity flows, overtopping by flood events, and being battered by logs, while still maintaining structural integrity and function. Our system not only provides a safe working environment, it also serves as a construction access and working platform. The system has also successfully been subjected to overtopping by storm flood events of high velocity river water without failure. Our system can support large loading weights such excavators, cranes, haul vehicles and concrete trucks working on the top of the structure. Our cofferdam system provides additional feature customization to meet the specific demands of any project.

The system described on this website is protected under the following patents:
US Utility Patent US 8,545,189 US Design Patent US D692,583
Unauthorized redistribution of this document is prohibited.

The bin wall system works based on cellular confinement of internal fill and structure mass. The bin walls are constructed of steel and provide armoring against the elements. The walls are reinforced and tied together through the use of steel members and ties. The inside of each bin is filled with river gravels, that help prevent sliding and resist over turning forces. The bottom of each wall is lined with short sections of geotextile fabric to help limit the migration of fines from within the bin. This allows full contact to the surface upon which the dam is constructed, creating a seal inside of the coffer bin. During installation, each bin can be fitted with a bulkhead, which helps limit the loss of fill and minimizing issues such as, creating in water turbidity. These benefits also apply to the removal process.

The system described on this website is protected under the following patents:

US Utility Patent US 8,545,189 US Design Patent US D692,583
Unauthorized redistribution of this document is prohibited.

Our cofferdam system is one of the strongest and safest systems in the construction industry, worldwide. It has been tested, installed and proven reliable on some of the toughest projects built on some of the most rugged terrains in the northwestern United States. This process typically requires a specific detailed consultation review of the project and its requirements, selection of the system components and options, preparation, delivery, installation, use, and removal. Please contact us for more information about our cofferdam system.

The system described on this website is protected under the following patents:
US Utility Patent US 8,545,189 US Design Patent US D692,583
Unauthorized redistribution of this document is prohibited.

Cofferdams

Dam Repair & New Construction

Levy Construction

River Diversions

In Water Building Construction & Demolition

Equipment Access & Bypass Roads

Access Across Wetlands & Swamps

The system described on this website is protected under the following patents:
US Utility Patent US 8,545,189 US Design Patent US D692,583
Unauthorized redistribution of this document is prohibited.