We took another step towards the construction of multi-storey wooden buildings

News, 10/12/2020

The University Centre for Energy Efficient Buildings of CTU in cooperation with the company Kronospan has developed and successfully tested a functional sample of a wall panel for wooden buildings. The element has increased reinforcement capacity and stiffness and is suitable, for example, for multi-storey buildings or structures with a large proportion of glazed surfaces in the perimeter walls.

The new type of massive laminated wall panel with a plate core is the result of the MTS research project, the purpose of which is to support the use of wood as a building material and the development of prefabrication of building parts. The research takes place within the National Centre of Competence CAMEB (Centre for Advanced Materials and Efficient Buildings), which was established in 2019 through the cooperation of CTU in Prague, BUT in Brno and another twenty-eight partners - universities and especially private companies.

The outer layers of the panel, consisting of wooden slats, are connected to the inner layer of OSB board using self-tapping screws. After carrying out and evaluating the mechanical load test of three large-format test bodies, it was confirmed that the new type shows significantly better static parameters than the system of mechanically connected laminated panels without OSB boards currently available on the market. From the comparison of the results, it can be concluded that due to the influence of the OSB board, there will be a significant increase in the reinforcement load-bearing capacity and reinforcement stiffness.

Panels made of mechanically joined cross-laminated wood with a layer of OSB find application especially as wall elements of wood-based buildings, where increased requirements are placed on reinforcement load-bearing capacity and stiffness. Examples can be multi-storey buildings, buildings with a large proportion of glass surfaces in the perimeter walls, or structures that require a free layout, which makes it impossible to place a sufficient number of reinforcing walls made of mechanically joined cross-laminated wood without a board core in the interior.