| 摘要 |
PROBLEM TO BE SOLVED: To provide a ceiling structure excellent in fire resistance and incombustibility and capable of producing the great effect of reducing floor impact sounds 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 placed on the ceiling 3. In the ceiling structure 1, the sound absorbing body 4 has a granular material 41 and a container 42 for housing the granular material 41, and the granular material 41 is perlite, a natural glass foam, sand or a mixture of at least two of them. |
