Our projects

The summer toboggan run at the IGA 2017 was not only planned as the 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 the art of civil engineering. With the use of 3,600 m³ of liquid soil, we have sustainably secured this important tunnel section and made an important contribution to the stability and future viability of the infrastructure.

As part of the conversion of the historic Bötzow brewery in Berlin, extensive measures were carried out to secure the construction pit.

As part of the renovation of the sewer network, KARL WEISS Technologies constructed the excavation pit and the connections for a rainwater overflow structure in Berlin Friedrichshain.

The company Vattenfall needed to increase the pressure of its district heating pipes in order to further expand the supply in the city area. The contract for the planning and construction of this pumping station was awarded to KARL WEISS Technologies on the basis of innovative special proposals.

Two trough excavation pits and a pipe jacking of DN 1000 each are planned for the project. Large boulder pockets in the ground pose a particular challenge, as they could endanger the jacking head of the system and obstruct rail traffic.

A trough excavation with sheet pile wall, underwater concrete base and HDI seal is planned for the renewal of the wastewater drainage system. Alternatively, a microtunneling method with mechanical tunnelling was offered.

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

Highlights: 2 parallel pipes laid on a slope with a partial 100% incline/decline with various pipe bends between the pumping station on the Limmat and the factory premises 300 m pipe rehabilitation with the starline®HPL-S method in 4 sections