Toblerstrasse housing estate, Zürich-Fluntern
2017
The settlement on the Zürichberg impresses with its unusual architecture: 13 compact solitary buildings with a triangular ground plan, which create cabinet-like outdoor spaces through their twisted and staggered arrangement.
The project
The Allgemeine Baugenossenschaft, Zurich (ABZ) is realizing 169 affordable modern apartments with its newly built development and at the same time rejuvenating the villa district. This is still characterized by detached houses with spacious gardens. Despite the significantly higher building density, the 13 new buildings fit in well with the existing neighborhood. The 2- to 6-1/2-room apartments offer space for families, couples, singles as well as the 55+ household community. The development meets the sustainability goals of the 2000-watt society.
Timbatec Holzbauingenieure was responsible for the facade construction. The curtain wall elements made of wood are attached to the slab facades.
The construction
The supporting structure is designed as a conventional solid building in cast-in-place concrete and bricks with a few facade columns and supporting walls. These were either masonry or concrete, depending on the static loads and building physics requirements. During construction, attention was paid to extensive system separation so that components can be easily replaced according to their service life.
The challenge
Particular attention was paid to the cantilevered balconies. In some cases, they protruded up to around four meters from the facade.
Construction Data
- Sleeper timbers 60*200mm 5'639 m2
- Basic elements 4'982 m2
- Elements between ceiling slabs 780 m2
- Parapet elements 4'290 m2
- Roof edge elements 1'100 m2
- Window enclosing plates 2708 m2
- Window sills 5'079 m2
- Roof edge sheets 1'155 m2
Services of Timbatec
- SIA Phase 31 Preliminary design
- SIA Phase 32 Construction project
- SIA Phase 41 Tender and comparison of offers
- SIA Phase 51 Implementation project
- SIA Phase 52 Execution
- Timbatec was responsible for the entire facade construction.
General contracting
Priora AG
8302 Kloten
Client
Allgemeine Baugenossenschaft, Zurich (ABZ)
8003 Zurich
Architecture
BS+Emi Architektenpartner AG
8004 Zurich
Landscape architects
Lorenz Eugster Landschaftsarchitektur und Städtebau GmbH
8004 Zurich
Photography
Roland Bernath
8048 Zurich
Densification on the Zürichberg
Bau & Architektur, 9.18 - The Zürichberg neighborhood near Zurich Zoo is considered a villa district. Nevertheless, housing cooperatives were able to secure and build on plots of land as early as the beginning of the 20th century. One example is the Allgemeine Baugenossenschaft Zürich (ABZ), which built 16 apartment buildings on Toblerstrasse in the 1930s. At the end of the last decade, the ABZ planned replacement buildings for the aging apartment buildings and announced an architectural competition. The competition was won by a consortium of two Zurich offices. The winning project is a hybrid building in which the internal load-bearing structure is of solid construction and the façade is made of wooden elements. Timbatec was involved in the planning from the beginning. 13 new buildings with 169 apartments were built. Previously, the housing estate had 114 residential units. In the article of Bau & Architektur it is underlined that the ABZ has made a contribution to the densification.
