| 摘要 |
PURPOSE: A reinforcing structure for attaching inflammable materials is provided to prevent fire and to improve heat-resistance. CONSTITUTION: In a fire door and a fire wall(10) containing a channel groove welded between an interior plate(11) and an exterior plate(11a), thermal insulation materials(13) such as nonflammable fiber, glass wool, rock wool, etc. filled in the interior and exterior plates(11,11a), and inflammable materials(14) such as MDF, plywood, etc. attached to the outside of the interior and exterior plates(11,11a), the reinforcing structure for attaching inflammable materials contains many primary channel steels(12a) welded on the inside of the interior plate(11) at regular intervals, many secondary channel steels(12b) welded on the inside of the exterior plate(11a) at regular intervals, nonflammable materials(15) fitted between the primary channel steel(12a) and the secondary channel steel(12b), fitting grooves formed on the primary, secondary channel steels(12a,12b) and the inflammable materials(14) and fastened with fixing bolts(17) not to separate the nonflammable materials(15).
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