One of 27 skylights made by seele for the new Stuttgart 21 station

1.030t

steelwork

4.319

milled nodes

5.210qm

glazing

21.500m

tube cladding

3.000qm

stainless steel cladding

seele realises complex steel and glass skylights for the new stuttgart main train station

seele is executing 27 complex skylights and three shell support structures for the ‘Stuttgart 21’ infrastructure project – the renewal of the main train station.

These ‘light eyes’, with a height of 4.30m and a diameter of up to 21m, will in future provide the underground station concourse with natural light and fresh air. Designed by ingenhoven architects, they distribute the daylight evenly over the interior for up to 14 hours a day.

The ‘regular light eyes’ are particularly ambitious in terms of the technology involved. They are composed of a supporting structure of welded steel sections and 5-ply laminated safety glass, as well as glass flaps at the highest point which can be automatically controlled. The steel and glass construction is framed with a double-curved stainless steel cladding made of tubes and sheet metal, in addition to a grating which surrounds it on the ground. The complex design is replicated in all 23 skylights. Furthermore, four flat walkable skylights will be created. To guarantee smooth installation of the skylights, a true-to-scale prototype of each type will be constructed beforehand.

  • Three shell support structures will in the future provide access to the new underground station concourse. The domed structures made from extruded aluminium sections are put together with 3D milled nodes. Each node is unique and realised as a gridshell node with a screw channel. The trigonal glass elements, with an edge length of 700mm, are made of 3-ply laminated safety glass. High quality stainless steel portal frames and integrated door systems complete the resulting façade surfaces under the domes, to ensure they are draught and weatherproof.

    Credits header: © plan b Stuttgart, Atelier Peter Wels, ingenhoven architects

  • 27 steel and glass skylights made by seele for Stuttgart 21
  • Steel-glass construction for skylights at Stuttgart 21, made by seele
  • Glazed aluminium supporting structures from seele for the entrances to the new Stuttgart railway station
  • Three aluminium-glass constructions with door systems serve as entrances for Stuttgart 21
  • The seele skylights for the new Stuttgart 21 railway station rise 4.30 m above the ground.
  • Skylights and shell structures provide daylight at the new Stuttgart railway station
27 steel and glass skylights made by seele for Stuttgart 21
© plan b, Atelier Peter Wels, ingenhoven architects
Steel-glass construction for skylights at Stuttgart 21, made by seele
© plan b, Atelier Peter Wels, ingenhoven architects
Glazed aluminium supporting structures from seele for the entrances to the new Stuttgart railway station
© plan b, Atelier Peter Wels, ingenhoven architects
Three aluminium-glass constructions with door systems serve as entrances for Stuttgart 21
© plan b, Atelier Peter Wels, ingenhoven architects
The seele skylights for the new Stuttgart 21 railway station rise 4.30 m above the ground.
© plan b, Atelier Peter Wels, ingenhoven architects
Skylights and shell structures provide daylight at the new Stuttgart railway station
© plan b, Atelier Peter Wels, ingenhoven architects

Credits

Client DB Station & Service AG
Main contractor DB Projekt Stuttgart-Ulm GmbH
Architect Ingenhoven Architekten, Düsseldorf (DE)
Date of completion 2023
Scope of seele supply
  • 23 ‘regular skylights’ (height 4.30m, diameter approx. 21m)
    • 880t steel support structures with 2,760 milled nodes
    • Approx. 4,000sqm glazing
    • Approx. 21,500m tube cladding
    • 3,000sqm biaxial curved stainless steel cladding
    • 670sqm glass flaps with automatic controls incl. motor
  • 4 flat skylights (approx. 17.5m diameter)
    • 150t steel support structures with 500 milled nodes
    • 750sqm glazing
  • 3 shell support structures with vertical glazing and automatic door systems (approx. 2,400sqm)
    • 80t aluminium support structure
    • 1,059 3D milled nodes
    • Trigonal glass elements