Sphinx – High-rise Birmensdorferstrasse, Zurich

Client Senn Resources, St. Gallen
Architects Edelaar Mosayebi Inderbitzin Architekten, Zürich
Planning 2019-2022
Execution 2022-2025
Services Structure and excavation:
Design phase
Tender documentation phase
Execution phase
Visualisations ZUEND IMAGES
Topics ResidentialBIMHigh-riseConcrete construction

On Zurich’s southwest main entrance road a compact and expressive 40m high-rise with 14 floors and 71 rental apartments is being built in the immediate vicinity of the Triemli public transport hub.
Above a five-story base structure, the fourteen-story residential tower rises in the central section of the building. The building has three basement levels with a parking garage, technical and cellar rooms and a shelter. Continuous core walls are used for bracing.
The new building is a solid construction and is designed as a skeleton structure with on-site concrete flat slabs on prefabricated columns and on-site concrete wall panels. The selected column arrangement allows for slim ceilings as a result of economical spans. A direct vertical load transfer characterizes the structural system of the building. Deviations from this principle can only be noted in the areas of the parking garage and the commercial area on the first floor. The requirements for the parking spaces result in a column grid that deviates from the grid above. For this reason, various intercepting walls are introduced.
On the 4th floor in the eastern area of the base building, attic apartments constructed in steel-wood lightweight construction. Here, structural steel frames are used in the apartment partition walls, with wooden box-girder ceilings spanning between them.
The building will be constructed on pile foundations.