| 摘要 |
PROBLEM TO BE SOLVED: To improve rigidity of a floor while simplifying a floor structure. SOLUTION: The floor structure comprises a peripheral frame 13 formed with a plurality of wooden outer frame members 11, 12, intermediate frame members 14 arranged in parallel with each other to bridge the outer frame members 12, 12 facing each other, and floor face members 15 fixed onto each of the intermediate frame members 14. In the floor structure, a shape steel 21 is used for at least a part of the intermediate frame members 14. COPYRIGHT: (C)2004,JPO
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