Technical information for Glulam.
Glue Laminated Beams (Glulam) / General.Glulam consists of at least three fibre parallel oriented glued board laminations. Glulam is generally exposed to bending stress so that the tension or compression areas will experience the highest strain. The layered construction of Glulam means that the laminations can be arranged according to their grade.
Wood species.
• Spruce (picea spp.)
• Larch, Douglas Fir, Pine upon request
Wood moisture content.
• 12% ± 2% at delivery
Gluing.
Waterproofed adhesives approved for interior and exterior applications, tested in accordance with EN 301/302.
Lamination thickness.
According to EN 386 - up to 42mm max.
Dimensions.
Widths: from 6 to 28 cm
Heights: from 10 to 220 cm
Lengths: from 3 to 36 m
Designations of static strength classes for Glulam.
Glulam is available as either homogeneous or combined glulam. Homogeneous glulam is formed from individual laminates of the same grade of timber while combined glulam consists of laminated of two different grades of timber (the higher grade glulam laminated being located at the top and bottom of the beam).Grades of glulam available include GL24h, GL24c, GL28h GL28c, GL32h and GL32c, (The higher the grade the stronger the glulam), where the h or the c signifies if the member is formed from homogeneous or combined glulam as noted above. Grades GL24 and GL28 are by far the most commonly used.
Finishes.
• All Glulam members are coated with a base preservative for protection against fungi and insect attack.• All steel connection parts and fittings are galvanised to BS EN ISO 1461.
• Additional treatments can be supplied to Glulam components, such as lacquers, stains and varnishes.
• Steel connection parts, where specified, can have an intumescent coating applied on or off site.
