Fire Safety
As, on average, wood burns down at a rate of 0.7 mm per minute, the cross section of the material is reduced by approximately 20 mm in 30 minutes, and by 40 mm in 60 minutes. This is why the load bearing potential of the remaining cross section is of major importance. The respective fire resistance grades F 30 and F 60 refer to the fire endurance of these wooden members. It is interesting to note, after all, that F 30 and F 60 can be obtained without additional flame-retardant treatment. Due to the inherent material properties of this natural building material, the fire-resistance characteristics of wooden structural members are excellent.
As professionals know about the excellent fire behavior of wood, many fire departments are timber constructions.