| 摘要 |
PROBLEM TO BE SOLVED: To provide a double floor structure which can offer high vibration control performance, inexpensiveness, and good workability. SOLUTION: This double floor structure is formed in such a manner that a space 38 is sandwiched between two upper and lower flooring materials. A highly rigid flooring material 30, which is spread as an upper floor all over a surface and made of aluminum or formed of a vibration control material, is integrally equipped with a floor panel part 30a, a peripheral wall part 30b which is suspended from a peripheral edge of the panel part 30a and connected in a circumferential direction, and a reinforcing rib 30c which is laid across the wall part 30b. A lower end of the wall part 30b is erected on a sub-floor material 52 of a lower floor in a lower part of the space 38 and supported in a lower part by a stud bolt 20. COPYRIGHT: (C)2003,JPO
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