The new U-Bahn line in Hamburg, Germany, is a key link in the development of the HafenCity area. The U4 passes under the river Elbe and the Alster basin.
Water above and around
Given the delicate location, Hamburger Hochbahn AG and the tunnel design firm, Obermeyer Planen + Beraten GmbH, decided to go for a proven sealing solution.
Efficient water barrier
Together, they specified Roxtec cable penetration seals to handle the extreme demands for water-tightness, both during construction and in the future.
Sealing is crucial
Roxtec seals are used for efficient sealing of cables and pipes – under flood protection gates, into stations, and into equipment rooms.
Why use Roxtec?
- High demands for water-tightness
- Design and engineering support
- Installation help and training
- Fast deliveries
- Multidiameter™ – adapts to cables of different sizes through sealing modules with removable layers
New underground line with new stations, tunnels, technical rooms and emergency exits
Hamburger Hochbahn AG
Design and engineering
Obermeyer Planen + Beraten GmbH
Ed Züblin, Hochtief, HC Hagemann and Aug. Prien
Sealing of cables and pipes – under flood protection gates, into stations, and into technical rooms
These sealing solutions were used in the project:
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