Burning behaviour on fire-preventive glued laminated timber of several columns

The Japanese government is promoting use of wood in recent years, because of the environmental provision of carbon dioxide fixation. The authors developed "FR wood". "FR wood" is the only technique with simply use one tree species in Japan. "FR wood" is built by three layers. The central member supports load, the second layer prevents a fire and the third layer is surface. A lot of experimental cases were conducted, and many temperature data or carbonization thickness data were accumulated. The measured maximum temperature depended on the thickness and the tree species of load supporting member.