| 摘要 |
PROBLEM TO BE SOLVED: To provide a floor slab structure capable of exhibiting sufficient floor impact sound cut-off performance without causing structural demerits. SOLUTION: The structure of a floor slab 1 supported by vibration restraining members 11 comprises a non-restrained floor slab part 12 located at a distance exceeding the half wavelength of bending wave in the floor slab to the impact frequency of a predetermined floor impact sound impact source, from the closest vibration restraining member, and a stepped part provided in the non-restrained floor slab part. The stepped part includes the non-restrained floor slab part at a distance within the half wavelength of the bending wave. COPYRIGHT: (C)2007,JPO&INPIT
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