| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an attic ventilation structure of a building, which secures necessary and sufficient fire proofness and water proofness, and allows ventilation quantity to be secured with a compact size causing no noise in designing a building roof. <P>SOLUTION: An attic ventilation structure 1 of a building comprises a roof backing material 2 which forms a slope of a pitched roof, a roof board 3 which is arranged on the roof backing material 2, a roof finishing material 11 of which tip reaches the approximately same surface as the lower end face of the roof backing material 2, a first drainer 5 which is arranged opposite to the roof backing material 2 or the lower edge of the roof board 3, and a second drainer 6 which extends from the lower edge of the roof board 3 and is opposite to the first drainer 5. The second drainer 6 comprises a slope extension part 6a which extends in the downward slope direction of the pitched roof, and a vertical part 6b which is bent at the tip of the slope extension part 6a so as to hang down. A ventiduct 7 which communicates from the ambient air to the lower edge of the roof board 3 is arranged between the first drainer 5 and the slope extension part 6a and the vertical part 6b of the second drainer 6. <P>COPYRIGHT: (C)2013,JPO&INPIT |
