4. The larger a piece of wood is the greater its resistance to fire.

In the case of structures laminated wood is effectively resistant to fire even more so than steel as it's only its outer layers that burn.

For example if an R30 fire resistance is needed (meaning that the structure will continue with its functions for at least 30 minutes) and the structure has a 42x150 mm piece of wood you can add up to 1 minute of resistance by increasing the section by 0.7 millimeters. This means that you should add 0.7 mm to get one minute of resistance. To go from R30 to R60 for example you should increase the thickness of the wood by 2.1 cm.

Timber

5、隐形节点的功能与美学

除了传统的金属制品 ， 一系列的隐形节点与组件可以通过螺栓和其他金属构件相连接 ， 它们可以将几种木头、或与其他材料连接在一起 。