FIRE PREVENTIVE AND FIRE RESISTING STRUCTURE OF EAVE SOFFIT PART, AND CORNER MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a fire preventive and fire resisting structure of an eave soffit part, which can prevent hot air from intruding into an under surface of eaves even if an eave-soffit runner (a corner member) undergoes deformation, etc., due to heat at a fire.;SOLUTION: A thermally expansive fire-resisting material 7 under an unexpanded state is provided in a close-contact state between the eave-soffit runner 2, into which an eave-soffit plate 3 is inserted, and an external wall 1 of a building. The material 7 is a non-combustible material expanded (foamed) by several tens of times at approximate 200°C. In normal times, the presence of the material 7 under the unexpanded state brings about waterproofing at a connection place between the runner 2 and the external wall 1. In case of the fire, the presence of the thermally expanded material 7 prevents a gap from being made between the runner 2 and the external wall 1 even if the runner 2 undergoes the deformation, etc., due to the heat at the fire because the heat at the fire makes the material 7 expanded between a back part of the runner 2 and the external wall 1. Consequently, the hot air is prevented from intruding into the under surface of the eaves.;COPYRIGHT: (C)2002,JPO