| 摘要 |
A floor structure comprising an upper layer (1) containing a material which is thermally decomposable to release water, a middle layer (2) for providing the structural strength, and a lower layer (3) covering the lower surface, in which at least the middle layer (2) and the lower layer (3) are composed of flame-retardant material, and a layer (4) of heat insulating material is formed therebetween. The floor structure is excellent in fire-resistance and heat-resistance, and it can facilitate the mounting of equipment or the like below the floor. |
