Glued laminated timber (glulam)

Glued laminated timber (glulam) is manufactured of bonded lamellae with parallel fibre orientation. The timber is kiln dried, planed and classified into strength classes by visual or machine grading. The adhesive used to bond the lamella has to fulfil the requirements of EN 301 or EN 15425 for loadbearing timber components. The suitability of the wood species in glulam construction has to be demonstrated. Spruce, pine and larch are most commonly used. Straight as well as curved beams can be manufactured and CE-certificate is required.

One can distinguish between homogenous (all lamellae across a beam's cross-section belong to one strength class) and combined (outer and inner lamellae belong to different strength classes) glued laminated timber. Glued laminated timber components of higher strength ratings combined beam lay-ups are to be considered for economical reasons. Combined beam lay-ups lamellae with higher strength properties are positioned in areas of higher tensile loading while lamellae with lower strength properties are positioned around the centre of the cross-section of the beam.

Glulam is particularly suited for components bearing high stresses or spanning large distances, such as columns and beams as the structural frame, which have to satisfy stringent requirements with respect to dimensional stability and appearance. It is widely used in buildings for over one hundred years in Europe.

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Glued laminated timber (Glulam)

European Wood (in China)
C412, Beijing Lufthansa Center
50 Liangmaqiao Road, Chaoyang District
Beijing, P.R. China 100125
T +86 10 6462 2066, F +86 10 6462 2067
Sino-European Wood Center
Room 202, Engineering Department,
Taoliyuan Hou, Xuhui Campus of Jiaotong University,
No.655 Panyu Road, Xu Hui District, Shanghai