The TS3 long-term test stand at the Bern University of Applied Sciences has delivered important results for the successful development of TS3 technology and has helped the technology to achieve market breakthrough. It has now been dismantled. In keeping with the circular economy, a new object is being created from the cross-laminated timber boards: two box girder elements for heavy-duty bridges.
The new TS3 technology enables large surfaces made of wood. Ten years of research together with the Bern University of Applied Sciences and the ETH Zurich was to develop the technology. An important milestone was the long-term test stand in the courtyard of the Bern University of Applied Sciences in Biel. It has served well and and has now been dismantled.
Market entry for TS3 technology
The long-term test stand was officially inaugurated on May 16, 2018. Still In the same year, construction work started in Grossaffoltern (BE) on the world's first first multi-family houses with TS3 technology. Since then, 15 projects with around 6,000 square meters of floor space have been realized - not only in Switzerland, but also in Austria, Canada and the USA. Among them are lighthouse projects such as the world's largest contiguous flat roof of the new Handl production building in the Austrian Tyrol. Austrian Tyrol. Or the Fasanenhof apartment building in Frenkendorf, with a total of 15 apartments, which is which is currently being completed. In the current year, a further 10,000 square meters will be added. Here you will find an overview of realized projects.
To ensure that TS3 construction projects are even more efficient and cost-effective
and cost-effective, and for the technology to establish itself successfully on the market.
further research and development work is necessary.
The CTI research project Timber Structures 3.0-Technology, which included the to which the long-term test stand belonged, was successfully completed at the end of June 2020. Information on the research project can be found at theWebsite of the BFH.
As a follow-up project started on 01.01.2021 the Innosuisse
research project "Achieving market maturity of the biaxial load-bearing
flat deck system in timber construction". Over the next three years, TS3 will research and optimize the
together with Henkel & Cie AG and Schilliger Holz AG as well as the research partners
research partners ETH Zurich and Bern University of Applied Sciences.
Innosuisse is supporting the research institutes with around 700,000 CHF. The
implementation partners provide the same amount again.
Bern University of Applied Sciences, two work packages are being processed. On the one hand, the
Institute for Timber Construction, Structures and Architecture IHTA is working on "Pour
to solid (PTS) to market", the suitability of TS3 for use on construction sites is being
under the leadership of Prof. Dr. Steffen Franke. On the other hand, in the Institute
for digital construction and timber industry IdBH the industrialization of the
technology is being further developed by Prof. Dr. Klaus Rehm.
ETH, the Institute for Building Materials of Prof. Dr. Ingo Burgert is researching the
interaction of the wood-adhesive system, and at the Institute for Structural Analysis and
Andrea Frangi is developing a biaxial load-bearing hollow box ceiling
hollow box slab is being developed, which will be integrated into the TS3 system. The
work packages will together lead to an increase in load-bearing capacity, an
extension of the range of application and finally also to an
efficiency increase in the application of the TS3 connection.
New object from old
In keeping with the principles of the circular economy, the a first exhibition object, the cross-laminated timber boards of the long-term test rig, which has been at BFH in Biel since 2018, are being reused. From the boards of the two box girder elements of a two-lane road bridge on a scale of 1:1. in a scale of 1:1. The elements show parts of a road bridge transverse to the axis, which could, for example, lead over a four-lane highway. A prestressing in the webs of the box girder enables the large spans with simultaneous high loads from the road traffic. The bridge will be on the occasion of the 4th International Conference on Timber Bridges in spring 2022.