| 摘要 |
PROBLEM TO BE SOLVED: To improve an earthquakeproofing property by arranging a pair of plates at least one of which is made of FRP with a clearance and interposing a rib structural body to connect the both plates in this clearance. SOLUTION: An FRP made roof material 1 provided with a pair of plates 3a, 3b arranged in parallel with a clearance 2 and a rib structural body 4 to connect the both plates 3a, 3b in the clearance 2 is formed. Additionally, dimensions of the clearance 2 formed between a pair of the plates 3a, 3b are formed constant in the plate extending direction and the other plate is shaped to extend in a straight line by changing the one plate 3 in a curved line on 'this FRP made roof material 1. Furthermore, the clearance 2 is arranged to be kept constant by forming the one plate 3 in a saw blade folded plate shape by arranging a crest part and a valley part alternately and forming both of a pair of the plates 3 in a folded plate shape or in a zigzag shape. Consequently, it is possible to extensively improve a designing property by forming it in a free shape.
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