| 摘要 |
PROBLEM TO BE SOLVED: To simply and rapidly perform a drain member replacing operation associated with the maintenance and repair of a waterproof sheet, while enabling the securement of drainage into a drain pipe even when the waterproof sheet is cracked or broken. SOLUTION: A drain structure 10 includes the drain member 12 which is installed in a structure 1 such as a roof floor and a balcony; the drain members 12 comprise the first drain member 12A which is fixed to the structure 1 and connected to the drain pipe 14, and the second drain member 12B; and the second drain member 12B is inserted into the first drain member 12A without having a side end of a drain outlet 22d of the second drain member 12B fixed to the first drain member 12A and the drain pipe 14. A space serving as a drainage passage 24 is provided between the first drain member 12A and the side of the drain outlet 22d of the second drain member 12B. COPYRIGHT: (C)2011,JPO&INPIT
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