| 摘要 |
The beam 10 has a cross-sectional width to depth ratio in the range 0.25 to 4, or one side is no more than four times greater than the other. The beam is formed from four layers 11, 12, 13, 14 and at least one web 15 located within the beam to define at least two insulation spaces 18, preferably comprising insulation, within the beam. Also claimed are a panel with a number of beams, each with a cross sectional width to depth ratio in the range 0.25 to 4 and include at least one insulation void, arranged parallel to each other and including a facing board on top of the beams. Also claimed is a wall made with at least two beams similar to those in the panel. Also claimed is a floor with beams parallel to each other and each including an insulation space. Also claimed is a structure with the beams, panel, walls and floor as claimed and a method of constructing said structures with beams. |
