Circular cells or diaphragm cells?

Circular cells provide faster and simpler installation due to their self-supporting nature once filled, allowing immediate filling regardless of adjacent cell heights. Filled cells can also serve as stable working platforms for constructing new cells. Additionally, they can be installed on both water and land.

The length of the common wall in a straight diaphragm does not affect the tensile forces in the sheet piles. As a result, there is no practical limit to its length.

Diaphragm cells can be more efficient for long, straight structures VS circular cells which require more lateral space due to their geometry.

Circular cells' independent, self-supporting design allows each cell to be filled and stabilized promptly after installation. On the other hand stability of diaphragm cells is largely achieved through continuity and interaction between multiple cells along the structure.

By simply changing the position of the junction piles on the circular cells you can easily change the direction of a cofferdam.

Both circular cells and diaphragm cells options work well where nearly no embedment is available. These structures rely on their own weight to resist lateral loads from soil and water, rather than depending solely on friction or deep anchoring.