| 摘要 |
PROBLEM TO BE SOLVED: To provide a double floor for bringing out sound insulation performance, even if the displacement of a floor face supported softly for sound insulation is suppressed. SOLUTION: The double floor comprises a plurality of elastic support legs 1, spacers 2 for floor plate displacement prevention, and a floor plate 3. The elastic support leg 1 has elasticity or viscoelasticity, and they are dotted on a lower floor 15. A plurality of the spacer 2 are arranged, by spacing an interval on an outer periphery, for instance, a wall end 15a of a planar range A arranging the elastic support leg 1. The floor plate 3 is arranged over each elastic support leg 1 and the spacer 2. COPYRIGHT: (C)2005,JPO&NCIPI
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