Invitation to the first cellar made of wood



The BMW15 apartment building in Thun is an innovative showcase project: it stands on the first cellar made of wood in Switzerland, does not require heating and breaks new ground in digital planning. On 1 September, we invite you to a guided tour together with the Initiative Holz BE.

The BMW15 apartment building in Thun is full of innovations. That is why, together with the Initiative Holz BE, we are inviting architects and other interested people to visit. Presentations will highlight the opportunities and challenges identified in the collaborative 3D planning and construction of the house. The first flat has recently been occupied, other flats are still available for viewing.

Programme Event on 01 September 2021, meeting point 5.00 p.m. (in German)

Begrüssung Initiative Holz | BE 

Martin Rösti, AG Baustoff BEO Thomas Lüthi, Geschäftsleitung 

Einführung zum Projekt

Stefan Zöllig, Timbatec Holzbauingenieure Schweiz AG und Bauherr 

Deep Wood Forschungsprojekt 

Prof. Thomas Rohner, BFH AHB Biel und Dr. Sonja Geier, HSLU 

Schweizweit erster Keller aus Holz und TS3-Technologie

Prof. Christoph Renfer, BFH AHB Biel und Christian Dörig, TS3 AG Thun 

Führung in Gruppen  

Eröffnung Apéro riche und Networking

We can welcome 30 people at this event. If there is a lot of interest, we will repeat the event. Please register under the following link: Registration 

Further information on the event at

BMW15 in Thun

A lot of wood is visible on the outside and inside. The TS3 technology enables a column-and-slab construction. The TS3 joints remain visible in this project.

First cellar made of wood 

What seemed impossible for a long time is now reality: Thun is home to the first apartment building with a basement made entirely of wood. Houses without heating and without air conditioning make an important contribution to climate protection. An even greater potential for saving energy lies in the choice of building materials. 

Wood is already widely used in building construction. The next step is to do without climate-damaging building materials such as steel and concrete - also in basements and in the floor slab. In order for basements to be mass-produced from wood in the future, a number of research questions need to be clarified. 

A research project of the Bern University of Applied Sciences together with Timbatec, TS3 and other business partners is currently addressing these questions. A start-up is to be founded from the group of research partners, which will be operationally active from 2023. 

DeepWood research project 

The DeepWood project refers to the future further development of the BIM maturity level from Level 2 to Level 3 and faces the challenge of how the collaboration of several users can be organised simultaneously in a common model. The BMW15 apartment building is the living lab for this research project with the Lucerne University of Applied Sciences and Arts and the Bern University of Applied Sciences.F

BMW15 in Thun

The 25-metre-long and eight-metre-wide timber structure stands on the basement with cross-laminated timber panels and is being accompanied by the Bern University of Applied Sciences BFH AHB Biel as part of an Innosuisse research project.



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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