Glulam/ properties

For the design of buildings, the following design-values can generally be used.

Reaction to fire class as per DIN 4102-4: B 2 (corresponds to the european class D-s2,d0)

Charring rate: 0.7mm/minute

Differential shrinkage ratio perpendicular to the grain: 0.24 %/per 1% moisture change

Thermal conductivity λ parallel to the adhesive joints: 0.13 W/(mK)

Thermal conductivity λ perpendicular to the glue-lines: 0.15 W/(mK)

Water vapor diffusion resistance factor µ: 40

The natural durability and corrosion resistance (resistance to aggressive chemical attacks) of glulam corresponds to the natural durability and corrosion resistance of the respective wood-species, regardless of the adhesive used.

The INFORMATIONSDIENST HOLZ “Konstruktive Vollholzprodukte” (Information Service Wood “Solid and engineered wood products for load-bearing purposes) available for download at www.info.infoholz.de), for example, offers additional information on the properties of various wood species.