"sue&til": Switzerland's Largest Timber Construction Project Started



In April, the foundation stone was laid in Winterthur for the largest timber development ever planned in Switzerland. More than 300 apartments are being built in the 2000-watt capable development, for which Timbatec is responsible for planning the timber construction. The first residents will be able to move into their new homes in spring 2018.

The residential project called "sue&til" is being built on a 17,800 square meter site in Winterthur Neuhegi. This site was used by the Sulzer Engineering Works for almost a hundred years. Implenia has developed the project with an investment volume of CHF 162 million in close cooperation with the City of Winterthur. Last year Allianz Suisse was won as an investor, which acquired 260 apartments. Implenia is thus implementing the project on behalf of Allianz Suisse as general contractor.    

The project was designed by the two Zurich teams of architects weberbrunner and Soppelsa, who won a project competition of the Implenia construction group three years ago. 

The building is divided into three areas: the over-high ground floor with public-oriented uses as pedestals; above two to three full floors with loggia apartments and attic apartments on the fourth and fifth floors.

There has never been so much wood

The special feature of this development: Only the basement and ground floor as well as the staircases are planned as a solid construction. The remaining four to five stories will all be made of wood. 

The size is not the only novelty of this project. It is: In the Oberwinterthur development, solid wood ceilings with a bound stone chippings without concrete are being used for the first time on a large scale. Up to now, large wooden superstructures have always been weighted down with concrete in the floor slabs or constructed as wood-concrete composite ceilings.  

No CO2 emissions thanks to this new design 

"This construction method makes it possible to avoid the CO2 emissions that occur with concrete layers. With this construction method, which we have helped to develop, excellent ecobalance values are achieved", says Stefan Zöllig, Managing Director of Timbatec. In Winterthur, this will result in a 2000-watt-capable development in accordance with SIA efficiency path 2040. 

According to Zöllig, this development shows that timber construction is gradually becoming independent of concrete: "We are of the opinion that concrete in building construction is no longer up to date and can be replaced economically, cleanly and dryly with timber construction", emphasizes the Managing Director of Timbatec.



Thun Branch

Timbatec Timber Construction Engineers Switzerland Ltd.

Niesenstrasse 1, 3600 Thun

Tel: +41 58 255 15 10


Zürich Branch

Timbatec Timber Construction Engineers Switzerland Ltd.

Ausstellungsstrasse 36, 8005 Zürich

Tel: +41 58 255 15 20


Delémont Branch

Timbatec Timber Construction Engineers Switzerland Ltd.

Avenue de la Gare 49, 2800 Delémont 

+41 58 255 15 40 


Bern Branch

Timbatec Timber Construction Engineers Switzerland Ltd.

Falkenplatz 1, 3012 Bern

Tel: +41 58 255 15 30



Headquarters Vienna (A) 

Timbatec Timber Construction Engineers GmbH
Im Werd 6/31a, 1020 Wien 
Tel: +43 720 2733 01



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