Development of a material- and energy-efficient timber construction system made of hardwood and softwood

The project focusses on the further development of cross laminated timber. To date, the components have been manufactured almost exclusively from high-quality softwood. They will therefore come under considerable price pressure as resources become scarcer in the foreseeable future. It is therefore necessary to develop modifications to enable the use of hardwood and previously underutilised softwood qualities. Due to the large production volume, cross laminated timber is particularly well suited to absorbing large quantities of damaged and residual wood in its middle layers, which up to now has usually only been thermally utilised with low added value or used for cellulose production - and therefore does not exploit the existing C-storage potential. The further development of hybrid cross-laminated timber ceilings (HBSP) also focuses on reducing component thicknesses by utilising the biaxial load-bearing effect with and without a concrete composite, with and without additional fire protection layers (modified Cottonid). The result will be the pre-competitive development of the ceiling systems to market maturity.


Project Partners:
TUM, Chair of Architecture and Timber Construction, Univ.-Prof. Stephan Birk
TUM, Chair of Timber Structures and Building Construction, Univ.-Prof. Dr.-Ing. Stefan Winter
TUM, Chair of Wood Science, Univ.-Prof. Dr. Klaus Richter
TUM, Chair for Biogenic Polymers, Prof. Dr. Cordt Zollfrank
TUM, Chair of Materials Science and Testing, Prof. Dr.-Ing. Prof. h.c. Christoph Gehlen
Industry partner Pollmeier Massivholz GmbH & Co. KG
and others

Funding Organization:
Federal Ministry of Food and Agriculture (BMEL) under the project sponsorship of the Fachagentur Nachwachsende Rohstoffe e. V. (FNR)

Project Duration:
March 2021 - September 2024