| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire protection structure for the girth of an outside insulation building, which is constructed in an easy manner, without increasing material costs and construction costs, suppresses propagation of radiant heat and flames from external wall members into the interior of the building, in case there is fire from an adjacent building, suppresses expansion of heat and smoke in a wall into the interior of the building in case of fire from the inside, and ensures the same sufficient amount of ventilation as in conventional structures. SOLUTION: According to the fire protection structure, an inside cover material is arranged so as to rest on a lower end of the girth on an inside vertical surface, and an intra-wall air layer is separated two-dimensionally from an attic space, to thereby suppress the propagation of radiant heat and infiltration of flames from the lower-story intra-wall ventilation layer into the attic space. Further a first communication portion is secured on the outside of the girth, to allow communication between the intra-wall air layers on upper and lower stories, and a second communication portion is arranged on the upper surface of the girth, to allow communication between the attic space and the intra-wall air layer. COPYRIGHT: (C)2005,JPO&NCIPI
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