| 摘要 |
PROBLEM TO BE SOLVED: To greatly improve the workability regarding a dry process fire limit wall installed under such a condition that work is extremely difficult form one side. SOLUTION: A dry process fire resistant structure wall 1 is constituted of a vertical stud 10 made of steel and aligned and arranged along the wall center and incombustible board materials 2 and 3 attached to only one surface of the stud made of steel. The respective ignition temperatures of the stud and the board materials are 1,000 deg.C or higher, and when the ambient temperature on the optional side of a wall body reaches a high temperature of about 950 deg.C, the surface temperature of the board material on the other side of the wall body maintains the temperature within the range that the highest is 200 deg.C or lower and the average is 160 deg.C or lower. The board materials are fixed to the stud by an incombustible and heat-resistant locking tool 8, and when the ambient temperature of one side area of the wall body reaches the high temperature of 900 deg.C or higher, the locking tool keeps the unity of the board materials and the stud and suppresses the heat deformation of the stud.
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