| 摘要 |
PURPOSE:To reduce transmission of vibration on the upper floor to the lower floor by using a high rigidity floor panel material for a floor panel material, and providing ceiling of the lower floor separately from the floor panel material. CONSTITUTION:A high rigidity floor panel material 7 is formed of four circumferential frame materials, middle materials connecting the frame materials with each other, and outer surface materials integrally connected on the surface and the back putting the frame materials and the middle materials between them. Thus formed high rigidity floor panel materials 7 are fixed to beams 4 on both sides provided at the boundary between outer wall steelwork frames 3 for the upper floor 1 and the lower floor 2 and middle beams 5 provided between these beams 4 on both sides. An integrating composite plate 13 is then connected completely applied to the surface of a plurality of the high rigidity floor panel materials 7 and to the surface of the middle beams 5. A ceiling for the lower floor is then supported by the wall surfaces of the lower floor under the high ridigity floor panel materials 7 to be a separate sound-proof ceiling 14. |
