Manholes and structures with a wide range of characteristics are required to develop a pipeline network with inspection facilities, service facilities and inlet and outlet flow regulation measures. Our manholes and system components are designed to meet these requirements. We create a manhole connected to the pipeline by welding. This way we guarantee a leak-proof system. The complete prefabrication of the manholes in the factory also guarantees the highest quality standards and the shortest installation times on the construction site. Because we have high design flexibility for manholes, we can create custom products that are also very economical. We can integrate technical equipment into the manhole for a wide range of needs, for example measuring, control or flow regulation. A variety of standard manholes are available manufactured in different shapes depending on the application. The choice of structure depends on the diameter of the sewer pipe, external loads from traffic, groundwater and soil pressure. Manholes are manufactured and statically calculated for different applications.

Manholes are usually secured against floating due to a high groundwater table by concrete gravity base plates attached to the manhole. The most common manhole constructions are through-flow manholes and tangential manholes. Through-flow manholes consist of a PEHD or PP-based manhole bottom part, inlet and outlet connection, non-slip shoulder, a flow channel (straight or angled) and steps or stairs. The manhole body consists of a lightweight pipe and has a flat top for direct placement of standard reinforced concrete elements according to DIN 4034 or a manhole cover plate with a support ring to distribute traffic loads. Tangential manholes are integrated directly into the sewer pipe and usually the center of the chimney is offset from the pipe axis. The manhole body consists of a lightweight pipe and is equipped with stairs or steps. The manhole cover has a support ring to distribute traffic loads. The transition to concrete components should always be above the groundwater table.