BauBuche GL75 is made from parallel-laminated 40 mm BauBuche S veneer boards. Thanks to its exceptional strength and stiffness, BauBuche GL75 is the ideal material for slender and elegant constructions and wide spans combined with high loads.
BauBuche GL75 beams can also be installed so that its veneer layers are aligned vertically.
BauBuche beams are sanded at the factory and therefore ideal for exposed applications.
The superior strength and stiffness of BauBuche allows smaller cross-sections, which in turn means major savings in material consumption. The dimensioning of a structure is determined by various properties, depending on the particular application. In the case of single-span beams, deformation (stiffness) is generally the key factor, whereas with continuous beams, it is bending strength or shear strength; and with columns and frameworks, it is compressive and tensile strength. The table opposite shows the amount of material saved by using GL28 glued laminated timber, spruce laminated veneer lumber and BauBuche GL75 respectively, in comparison with C24 solid wood (normal construction timber).
This is based on the following assumptions:
- Use in service class 1
- Load-duration class: medium-term
- Uniform cross-sectional height of 300 mm
- Calculation according to EN 1995-1-1.
As on 2014
The 2nd revised edition of our manual for structural calculation takes into account the new strength properties of the BauBuche products according to the latest approval. In addition, it now also contains strength calculation data for BauBuche GL75 trusses.