What is glued laminated wood?
Glued laminated timber, also called glulam, is a type of structural engineered wood product comprising a number of layers of dimensioned lumber bonded together with durable, moisture-resistant structural adhesives. Easywood glued laminated timber is used for the floor, roof and wall structures of solid wood in combination with steel, concrete, masonry, and hard stone and meets all current requirements forin the construction or renovation of existing buildings.
• Norway spruce
• BS11 (GL24)
•Melamine resin adhesive
• Surface: visible or invisible
• The true density: Rho = 450 kg / m3
• Wood moisture: producing at 12 + - 2%
• The water vapor diffusion resistance coefficient m = 40
• The nominal value of thermal conductivity: Lambda R = 0.13 W / (m · K)
• Dimensional increase and decrease the value of the characteristic perpendicular to the fibers as a percentage of 1% change in wood moisture glued wood of coniferous wood = 0.24
Initial moisture = 12%
End humidity = 16%
Components width = 600
Delta = 0:24 / 100 x (initial moisture% - finishing humidity%) x width m = change in dimension mm = 0:24 / 100 x (12% -16%) x 500 mm = 4.80 mm
What is the fire safety of glued laminated wood?
A glulam structure is much safer and can be more cost effective than an unprotected steel structure. When fire encases a glulam beam, a carbonized layer forms around the structural core, which restricts the external supply of oxygen and heat and thus significantly impedes the subsequent burn-off. The burn-off rate of glulam is 0.7mm/min and therefore expensive fire protection coatings are normally not necessary. For practical use this means that without any surface protection and any additional provisions, laminated timber construction requiring a fire resistance of 30minutes, 60minutes and 90minutes is simple to achieve. When a surface spread of flame layer requires to be reduced, this can be solved by the application of a water based patented environmentally friendly product that is invisible to the naked eye.