Lighting for the new Heumarkt U-Bahn station in Cologne

News /
31 July 2015
Lighting for the new Heumarkt U-Bahn station in Cologne
The largest of the stations, which is at Heumarkt, offers an impressive demonstration of how the luminaires contribute to function, safety and aesthetics all at the same time.

Each of the eight stations on the new North-South rapid transit (U-Bahn) line in Cologne were designed by a different architectural firm, and four of these stations use lighting technology from WE-EF. The largest of the stations, which is at Heumarkt, offers an impressive demonstration of how the luminaires contribute to function, safety and aesthetics all at the same time. 

Given the great differences in room heights – for example, 13 metres in the vaulted hall and moderate ceiling heights in the intermediate levels – as well as the volumes of space across the various floor levels (especially in the escalator and stairway areas), the task for the lighting design team was to generate sufficient illuminance at the transport levels from a wide range of lighting point heights. A particularly versatile lighting instrument was required in order to manage the heterogeneous installation positions and the installation/mounting conditions, using a continuous luminaire design. The versatile WE-EF DOC200 recessed exterior downlight series was the ideal solution for evenly powerful and flexible lighting.

The luminaires are innately suited to the raw ambient conditions present in a transportation building. The corrosion–resistant, marine-grade die-cast aluminium housings, 5CE corrosion protection, polymer-coated stainless steel fasteners, lenses made from safety glass resistant to changing temperatures, vibration protection and IP65 protection ensure reliable operation of the luminaires. In this project specifically, the adaptability of the luminaires to suit the necessary installation situations was also an advantage.

Beyond the impressive band of light in the vaulted ceilings, the DOC240 luminaires are mainly used to illuminate the steps and paths in many areas of the station. Their discreet design is ideal for harmonising the lighting with the modern architecture and sophisticated exposed concrete or backlit glass block surfaces.

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