Efficiency in timber construction thanks to statics
A research project by Empa, Bern University of Applied Sciences and ETH Zurich is closing a gap in the structural analysis of timber constructions. New models and large-scale tests should make window walls usable as load-bearing elements in the future and make timber construction more economical and sustainable.
Timber frame construction scores highly as a sustainable alternative to concrete. However, there is a problem with structural planning. Walls with windows were previously considered “statistically invisible” due to a lack of reliable data on load-bearing behavior. Planning, use of materials and costs suffered as a result.
Large-scale tests for greater material and cost efficiency
In order to close this knowledge gap, Empa, the Bern University of Applied Sciences and ETH Zurich launched a joint research project, supported by the FOEN and industrial partners. In Empa’s construction hall, wooden walls are deliberately subjected to extreme horizontal loads, generating valuable data on the load-bearing capacity of walls with window openings. The aim is to use the horizontal bracing values of such elements reliably in everyday engineering in the future.
Less concrete, more wood
The findings are being incorporated into a new, simple computer model. The initial results show that walls with windows also make a significant contribution to bracing. This reduces the need for steel anchors and concrete cores and cuts the amount of material, time and costs involved in timber construction. In the long term, this results in more economical and ecological buildings.
Cooperation between research and industry
The focus is on the practical suitability of the new model. In close dialog with industry partners, the complex research model is translated into an applicable solution for planning practice. This benefits planners, investors and residents alike.
With new test procedures and calculation models for window walls, the research project is taking timber construction a step further towards greater efficiency, resource conservation and innovation.