Karlsruhe
Shataban Tunnel

Infrastructure project

Karlsruhe
Shataban Tunnel

 

Object: Light rail tunnel
Location: Karlsruhe

Our mission
A few months before the opening, several thousand square metres of exposed concrete surfaces were designed and finished in great detail by our teams. The cable ducts created for the illumination of the illustrations, the fire protection cladding and the technical installations were then integrated into the structure with great attention to detail. The aggregate was bonded and the adjacent edged stones were painted. The exposed wiring was concealed, the openings in the walls near the escalators were sealed, and the panels were seamlessly integrated into the overall appearance.

Recoating concrete using BECONART

Challenge
Treating thousands of individual areas of exposed concrete at seven stations with multiple exits within a short timeframe – in the city centre – was a huge challenge. This complex task required a masterful effort in logistics, execution and coordination. The teams had to work with precision and coordinate seamlessly to complete the trowelled concrete surfaces on schedule. Every step of the process was crucial to creating a harmonious overall appearance and ensuring that all details were perfectly coordinated. Working in an urban environment also requires meticulous planning to avoid disrupting ongoing operations whilst ensuring the highest standards of quality.

The light rail tunnel

The light rail tunnel, constructed by allmannwappner, began in 2004 and opened at the end of 2021. The seven stations, which feature transfer halls and two types of passenger concourses, lead via mezzanines to uniformly exposed concrete ceilings and a white-lit platform level. A consistent, unifying pattern links the dense concrete walls and the calm terrazzo floors right up to the southern curve. Ingo Maurer’s suspended lighting concept, set against a colour wheel, complements the design, allowing people to let the city’s events unfold in peace and reverence.

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