Glulam – Primary structures
Arched beams

Glulam – Primary structures
Arched beams

Arched beams

Arched roofs are an indispensable design element in today’s architecture, where glulam can show off all its strengths. Simple design, high efficiency, low dead weight and low beam heights cannot be surpassed by steel and concrete when using glulam. The result is light, transparent constructions that offer a high intrinsic architectural value. It should be noted that thinner slats are used from a radius of curvature ≤ ~ 7.00 m, which noticeably increase production costs.


Span 5 – 25 m
Roof pitch Note transport height/width
Usual beam spacing (other dimensions possible) 2 – 6 m
Beam width (2 cm preferred dimensions each) 10 to 26 cm
Cantilevers yes
Height of components (for structural design) h1 = l/17 to l/25; r ≤ 7 m
Possible fire resistance classes R 30 > without problems
R 60 > with additional costs
Preferred strength classes GL 24h/c, GL 28c, GL 30c

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