Glulam hardwood

Neue Holzbau AG has over 10 years of experience in manufacturing Glulam made of hardwood. Apart from elements in ash and beech, also elements in oak and locust have been produced. Hardwood shows strength values that exceed the more frequently used construction timber made of pinewood. Especially its crush resistance and tensile strength, but also its fibre-parallel push- and pull stability considerably exceed the quality of pinewood. Furthermore, the significantly higher efficiency of the fastener in the hardwood plays an important role.

Hardwood, which is a glued-laminated element, is the natural high performance material for future timber engineering. Beams of classification GL48 are made possible due to the application of quality-tested boards made of hardwood (strength class 40, ash and beech). 48 defines the value of the characteristic bending strength in N/mm2. Glulam from spruce is mostly used in strength class GL24, i.e. half the strength. Naturally, the significantly higher strength is accompanied by higher demands on production and quality management. In order to ensure highest quality of the construction elements, laminations and finger joints are tested on tensile testing facilities before and during production.

characteristic values ​​for LH-BSH
(values in [N/mm2], valid for HF 12%)
GL40k
n’H-guideline
GL48k
n’H-guideline
GL36k
spruce-BSH
flexural strengthƒm,d26.5 N/mm232 N/mm224 N/mm2
tensile strength | | to the fiber directionƒt,0,d20 N/mm222 N/mm216 N/mm2
tensile strength ⊥ to the fiber directionƒt,90,d0.25 N/mm20.25 N/mm20.15 N/mm2
compressive strength || to the fiber directionƒf,d,d22 N/mm225 N/mm218 N/mm2
compressive strength ⊥ to the fiber direction
- general4.5 N/mm25 N/mm22.2 N/mm2
- mit Vorholzƒc,90,d6.3 N/mm27 N/mm23.0 N/mm2
- end support5 N/mm26 N/mm23.0 N/mm2
shear strengthƒv,d3 N/mm23 N/mm21.8 N/mm2
modulus of elasticity || to the fiber directionE0,mean14 kN/mm215 kN/mm214 kN/mm2
modulus of elasticity ⊥ to the fiber directionE90, mean1 kN/mm21 kN/mm20.4 kN/mm2
shear modulusGmean1 kN/mm21 kN/mm20.4 kN/mm2

BSH-Ash

BSH-Beech

BSH-Oak

BSH-Robinia

BauBuche

Special components