| 摘要 |
PROBLEM TO BE SOLVED: To prevent rainwater from flowing down below a deck surface even when a rainfall quantity is particularly large. SOLUTION: A rain gutter 14 of respective deck materials 2N is formed in a convexed cross sectional shape, and the volume of its rain gutter is expanded. A watertight material 20 is arranged in an upper end part of a rising wall on the later order deck material side of its rain gutter, and is brought into close contact with an under surface of an upper surface wall 3 of a later order deck material. COPYRIGHT: (C)2007,JPO&INPIT
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