50 jahre dienst und auf die bedürfnisse der anspruchsvollsten kunden in der baubranche zu treffen.
Gbm beam H20 and Gbm beam H20+ are the strongest and lightest formwork beams made of engineered fir and spruce wood. Our formwork beams are produced in various standard lengths. With Chords made of high-quality and graded massive finger-jointed timber, Webs made with a 3-ply laminated wood panels and optional protective cap that prevents the beam to be exposed to premature chipping on the chord ends, Gbm beam H20 and Gbm beam H20+ assure sustainability and durability in all climate zones.
Support: Due to the 3-ply solid wood webs, Extrabeam H20 and Extrabeam H20+ can be cut into and supported at any length.
|Dimension||Value (a)||Tolerance (b)|
|Beam height||200 mm||± 2 mm|
|Chord height||40 mm||± 0,6 mm|
|Chord width||80 mm||+ 0,8 mm/-1,2 mm|
|Web thickness||28 mm||± 1 mm|
a) These values apply at a wood moisture content of 12 % ± 2%
b) According to standard SIST EN 13377:2002
|Qualities||DIN1052-1:1988-04||DIN1052:2008-12 / Eurocode 5|
|Strains||Permissible stress values||Characteristic limits of load-bearing capacity|
|Shearing force||ZUL Q = 11,0 kN||Vk = 23,9 kN|
|Bending moment||ZUL M = 5,0 kNm||Mk = 10,9 kNm|
|Support||-||Rb,k = 47,8 kN|
|Section modulus (1)||Wx= 461 cm3|
|Geometrical moment of inertia (1)||Ix= 4.613 cm4|
|Elasticity modulus||E = 10.000 N / mm2|
|Shearing modulus||G = 600 N / mm2|
The values of the section modulus and the geometrical moment of inertia apply to new or used concrete formwork beams. An analogously increased factor of safety needs to be added for severely worn beams.