Joints

Diaphragm wall joints

Why is an end-stop used?

During the construction process, multiple panels are joined together to create a diaphragm wall. In order to create a tight and secure joint between these walls, end-stops are used to create this connection between the panels. Each company may have its own method depending on the forces acting on the wall and the resulting impact on the water-tight seal.

Reusable end-stops

Reusable stop-ends, either with or without a water-stop, are the commonly used methods when constructing diaphragm walls. The end-stops are retrieved either vertically with a hydraulic press that pulls it directly upwards, or horizontally by using the grab to loosen it.

FertigteilfugeLost End-stop

Lost end-stops have the advantage that they do not have to be pulled out vertically or horizontally, but instead they are just left in during and after the construction process. On the other hand, this means that excess concrete may run past the end-stop and require removal. Very often a special designed chisel for joints comes into action. Lost end-stops include steel end-stops and stop ends as pre-cast elements.

Alternative construction methods of diaphragm walls.

CWS-Fuge System Bachy (Mit oder ohne Fugenband)

CWS-end-stop System Bachy (with or without water-stop)

Fertigteilfuge (mit Fugenband)

Stop-end as a pre-cast element (with water-stop)

Verlorene Flachfuge (ohne Fugenband)

Stop-end steel panel (without waterstop)

Wiedergewinnbare Flachfuge (ohne Fugenband)

Reusable Stop-end steel panel (without waterstop)

Abschalrohre

Steel tubes as stop ends