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Timber Structures 3.0 AG

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Timber Structures 3.0 AG
Niesenstrasse 1, 3600 Thun
Tel: (+41) 058 255 15 80
info@ts3.biz


Developed by Timbatec


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Wood instead of concrete. Quite simple.

27.11.2020

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The first four-story column-and-slab structure made of wood is being built in Frenkendorf in Basel-Land. With the multi-family house "Fasanenhof" with 15 apartments, the TS3 technology proves its potential. The people involved are enthusiastic.

The construction industry is on the verge of a radical change: with a new technology, timber construction is conquering large buildings. TS3 makes large areas made of wood possible. This means that wood can replace traditional reinforced concrete in many projects - which is good for the climate. The technology is the result of 10 years of research and development by Timbatec together with the Berner Fachhochschule and the ETH Zurich. With the four-story apartment building in Frenkendorf, the proof-of-concept has been more than provided.


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The installation of CLT panels on the supports is simple.  The wood remains visible in the columns and the ceilings.   


During a tour of the construction site with invited guests, the architect and the project manager share their experience with the new technology. Investors are looking for investment properties with the best possible profitability. "Convincing the building owner of the timber construction option often takes time and energy", according to architect Andreas Scherer. "During the convincing phase, we have to continue planning the building project in different material variants. There TS3 plays into our hands. With TS3 we can plan in concrete and build in wood." The planning with the three-dimensional load-bearing cross laminated timber panels is similar to projects made of reinforced concrete.

 

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Simon Müller, site manager Scherer Architekten, Stefan Zöllig from TS3 and architect Andreas Scherer (from left) are happy about the successful construction. 


Timber construction is the better solution

"We are an office that is comprehensively committed to sustainability", emphasizes Scherer of Scherer Architekten AG. It absolutely makes sense to replace energy-intensive materials with less energy-intensive ones. That's why we try to replace steel and concrete with wooden structures wherever possible and sensible. In the case of "Fasanenhof", we were able to save almost 600 tons of CO2 by switching from concrete to wood. 


" The TS3 joint is of little concern to us. We can do our normal operations", explains Benjamin Kaiser, project manager of the Stamm AG. Thanks to the meticulous planning and prefabricated components, we set up the building with 15 apartments in just three weeks. Construction projects with a lot of steel, brick and concrete take much longer. Often, with these materials, planning and decisions are still being made at the construction site. This massively disrupts the construction process. With timber buildings, it's different. "Technologies like TS3 and construction processes where timber construction dictates the accuracy are invaluable for us", explains Kaiser.


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View of the staircase core: In large construction projects, builders often first pour the concrete for the staircase core. Carpenters then assemble the prefabricated wooden components. Timbatec has reversed this sequence: The timber structure is erected, then the liquid concrete is poured.   


The Timber Structures 3.0 technology, TS3 for short, is a process that can generate large surfaces from wood - without the cross beams that were previously common. These large areas can replace reinforced concrete in most areas. TS3 connects wood components on the face side. For decades, this was considered impossible. The solution is a two-component polyurethane casting resin. This resin connects the timber elements to each other on the face side. This enables column-and-slab constructions of the kind that were previously only possible with reinforced concrete projects. This means that timber construction has reached the third generation - a quantum leap that is causing the construction industry to rethink. 


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The CLT panels are pretreated in the manufacturing plant. A sealing tape (white) is mounted on the face to prevent the casting resin from escaping from the joint. To ensure optimum joint grouting, the joint is divided into segments (black tapes). 


The implementation of the TS3 technology on the construction site has been continuously optimized. As a result, we are now faster and more cost-effective than in the first projects. An important innovation is the V-shaped joint. This means that the joint is hardly visible on the underside of the slab and the consumption of casting resin is significantly lower. An apartment can be grouted in just one hour. In the current cold temperatures, the casting resin and the interiors are heated.


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