Housing estate Sihlgarten

Leimbach, Switzerland
Photo © Roger Fre
Architects
Galli Rudolf
Year
2003 – 2007
Team
Claudio Schiess, Matthias Brunner, Matthias Amsler, Ivanna Vukoja
General contractor
Karl Steiner AG, Total Services Contractor, Zurich
Owners representative
WohnBauBüro AG, Uster
Civil engineer
Kocher Ingenieurbüro für Hoch- und Tiefbau AG, Bülach
Building technology
PZM Polke Ziege Von Moos AG, Zurich
Electrical engineering
PZM Polke Ziege Von Moos AG, Zurich
Acoustic and Building physics
Wichser Akustik und Bauphysik AG, Zurich
Landscape
Andreas Tremp Landschaftsarchitekten, Zurich

Large warehouses and the busy thoroughfare Leimbachstrasse over the Sihl to the north and east, and the atmospheric topography of cooperative row houses and gardens at the foot of the Uetliberg to the south and west make for a heterogeneous context. The project reacts to the duality of this situation: the angled form of the cooperative housing development creates a quiet courtyard facing west that borders on existing green spaces. A passageway in the northeastern corner of the L-shaped plan provides the residents with a direct connection to the bridge and regional trains and links the housing development to the Sihl area and the neighborhood.
A total of fifty-seven apartments ranging from 2- to 5.5-room layouts over one or two stories show typologies matched to their respective position: along the river Sihl, there are single-story apartments with deep floor plans and spacious river-facing living room/kitchen combinations that extend diagonally into the living spaces facing the courtyard. The Leimbachstrasse side accommodates maisonette apartments with rooms looking out towards the courtyard. They can be accessed from the street via glazed balcony walkways that effectively mitigate the noise.
The enveloping facade bands serve to unite the various floor plan typologies and the highly diverse exterior spaces. Slabs of light-colored travertine clad the continuous parapets. Through the vertical rhythm of the stone plates, the characteristic surface of the travertine resembles a kind of tree bark as it can often be found in the river surroundings. The choice of stone was inspired by Otto Senn’s “Zossen” park housing estate in Basel, which dates from the 1930s: at once coarse and fine, the stone lends the building an atmospheric presence. The facade is both easy to maintain and sustainable; and its insensitivity to the dust emissions from Leimbachstrasse is a decisive factor. In contrast to the closed facade along the busy thoroughfare, the courtyard side with its continuous balconies, enjoying all-day sunshine, has an almost Mediterranean, open flair.

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Other Projects by Galli Rudolf

Erlenmatt Ost, Module 1
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Multigenerational building «Giesserei»
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House A4 «am Rietpark»
Schlieren, Switzerland
High-rise Building Baslerstrasse
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School and Gym Bühl C
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