| 摘要 |
PROBLEM TO BE SOLVED: To provide a structural body (skeleton) easy to assemble and having high strength. SOLUTION: One-end sections of unit beams 1 and 1A are fastened to the fastening holes of a hub plate 6 having a plurality of fastening holes from one side or both sides, and the other ends of the unit beams 1 and 1A are fastened to the fastening holes of another hub plate 6, thereby the structural body (skeleton 10) is assembled by connecting the unit beams 1 and 1A via many hub plates 6.
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