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Safety, security

Fire safety in Switzer­land's tallest building

126 m tall office high-rise with service spaces, ground-floor bar, roof-level public restaurant with bar and lounge, and conference center on second-highest floor.

Gruner was commissioned to develop the fire safety concept for the office high-rise. This included checks on various fire-rated dividing elements, such as walls, ceilings and fire stops/barriers together with preliminary work on the fire emergency controls. The latter, in particular, enjoyed very high priority given the importance of the pressurization control system for the three protected stairwells in the high-rise. This system has to ensure, within the space of three minutes, that all open windows (over 1,000 in the worst case) are closed while 12 vents at predetermined positions on the stories remain open.


Gruner AG
St. Jakobs-Strasse 199
4020 Basel
Contact Person
Jörg Kasburg
T +41 61 317 64 42
Jörg Kasburg Gruner AG