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Life without concrete - How we save the climate with the "Tiny House"
EN - The building sector is responsible for 40 percent of resource and energy consumption. How will we build in the future? Tobias Müller lives in a sustainable mini-house, shows how good a new eco-concrete is and how high-rise buildings can be built with wood.
The World Climate Conference is taking place in Glasgow at the beginning of November. The building sector plays a crucial role in times of climate change and resource scarcity. It is responsible for 40 percent of global resource and energy consumption. The potential for implementing measures to increase energy and resource efficiency in buildings is correspondingly great. How will we live and work in the future? And how do we build our houses sustainably? Tobias Müller is shown a mini-house, a so-called Tiny House, where a researcher has developed sustainable solutions on a real building. "Einstein" shows how robots build an entire house, how good eco-concrete really is, and how wood can even be used to build skyscrapers.
The Tiny House
The so-called circle house is located in Feldbach on Lake Zurich. The name stands for Climate and Resource Efficient Sufficiency House. The project shows how a functioning circular economy can be implemented in buildings in the smallest of spaces. From the building materials to the nutrients from the wastewater - everything is in the cycle. Tobias was involved in the construction of the house and test lived it.
House of the future: Nest
How will we live and work in the future? And how will we build our houses? These are precisely the questions that scientists and industry are asking in the House of the Future at Empa in Dübendorf. The so-called Nest is a construction laboratory, an innovation platform that allows research in and on a real building and the development of new, sustainable solutions. Tobias Müller was shown how robots build houses and how digitalization in construction can massively reduce material consumption.
Green concrete
Mankind builds on concrete. Houses, bridges, foundations. No material is produced in greater quantities. The result: an immense CO2 footprint, eight percent of global emissions. The CO2 is produced during cement production, the main ingredient of concrete. But we can hardly do without concrete, if only because the CO2 footprint of other building materials such as steel and brick is even greater. That's why the only option is to improve the cement. Researchers at EPFL-Lausanne have succeeded in doing so, developing an alternative cement and reducing CO2 emissions during production by 30 to 40 percent. It is already being produced in India and several other countries.
Skyscrapers made of wood
In Zug, one of the world's tallest skyscrapers made of wood is to be built from 2022 onwards, with 27 floors and a height of around 80 meters: the "Project Pi". The special feature: For the first time, the load-bearing core of the building will no longer be made of concrete, but also of wood. Before construction work can begin, the planned components still have to be thoroughly researched and tested. To this end, extensive experiments will take place in May 2021 at ETH Zurich as well as at the construction company Implenia in Zurich, where a 1:1 model of two floors of "Project Pi" has been produced especially for this purpose.
*Translated with www.DeepL.com/Translator (free version)