| 摘要 |
PROBLEM TO BE SOLVED: To provide a ceiling structure which is excellent in fire resistance and incombustibility and which has the great effect of reducing a floor impact sound on an upper floor.SOLUTION: A ceiling structure 1 includes: an upper structure 2; a ceiling 3 that is formed with a clearance below the upper structure 2; and a sound absorbing body 4 that is loaded on the ceiling 3. In the ceiling structure 1, the sound absorbing body 4 has a granular material 41 and a container 42 for accommodating the granular material 41, and the granular material 41 is made by mixing perlite, a natural glass foam and sand, or at least two of them.SELECTED DRAWING: Figure 1 |
