Our Projects

The summer toboggan run at the 2017 IGA was planned not only as a highlight of the event, but also as a technical masterpiece in the field of foundation engineering.

The backfilling of the BEHALA Tunnel represents an impressive milestone in civil engineering. By using 3,600 m³ of liquid soil, we have ensured the long-term stability of this significant section of the tunnel and made an important contribution to the stability of the infrastructure.

As part of the renovation of the historic Bötzow Brewery in Berlin, extensive measures were taken to secure the construction pit.

As part of the sewer system renovation project, KARL WEISS Technologies excavated the foundation pit and installed the connections for a stormwater overflow structure in Berlin’s Friedrichshain district.

Vattenfall needed to increase the pressure in its district heating pipelines in order to further expand service in the urban area. The contract for the design and construction of this pumping station was awarded to KARL WEISS Technologies based on its innovative, customized proposals.

The project calls for two trench excavation sites and one pipe-jacking operation, each with a DN 1000 pipe. Large clusters of boulders in the ground pose a particular challenge, as they could endanger the machine’s cutting head and disrupt rail traffic.

For the renovation of the wastewater system, a trough-shaped excavation with sheet piling, a concrete sub-base, and an HDI seal is planned. Alternatively, a microtunneling method using mechanical excavation was proposed.

Highlights: 1,600 m of in-line liner installation in 8 sections, each 200 m long starline®STRUCTURE* system as a self-supporting pressure pipe liner Max. operating pressure: 10 bar (PN 10) Passing through pipeline culverts with 2 x 15° bends

Highlights: Two parallel pipelines laid on a slope, with gradients reaching 100% in some sections and featuring various pipe bends between the pumping station on the Limmat and the plant premises 300 m of pipeline rehabilitation using the starline®HPL-S method in 4 sections