| 摘要 |
PROBLEM TO BE SOLVED: To provide a double waterproof structure of an outdoor floor capable of surely waterproofing the outdoor floor and, even if water leakage occurs, enabling early detection. SOLUTION: A plurality of floor materials 3 are installed on the outside continuously with each other. A secondary box gutter 4 is installed on the outside of the floor material 3 positioned on the outermost. A waterproof sheet 5 is laid on the floor materials 3 to be continuous with a secondary box gutter 4. A plurality of steel plate units 8, 9, 10, 11 each having a heat insulating plate 6 and a synthetic resin coated steel plate 7 stamped on the heat insulating plate are installed on the floor materials 3 so that joints parts 12 can be formed therebetween with the waterproof sheet 5 interposed therebetween. A primary box gutter 13 is installed on the outside of the steel plate unit 8 positioned on the outermost to be continuous with the synthetic resin coated steel plate 7. A primary drain pipe 15 is connected to a primary drain port 14 formed in the primary box gutter 13. A secondary drain pipe 17 is connected to a secondary drain port 16 formed in the secondary box gutter 4. A waterproof tape 18 is stuck on the steel plate units 8, 9, 10, 11 so that the joint parts 12 are closed. COPYRIGHT: (C)2007,JPO&INPIT
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