| 摘要 |
PROBLEM TO BE SOLVED: To improve fire resistance performance of a face material used in a ceiling plate, a wall, etc., inexpensively without impairing the construction property. SOLUTION: A joint member 10 having fire resistance performance is attached across thin metal plates 3, 3 having fire resistance performance therebetween in a joint part 7 of ceiling plates 1, 1 to which the metal plate 3 is stuck and which are mutually adjacent. The joint member 10 is fixed on the ceiling plate 1 together with the metal plate 3 using screws so that adjacent metal plates 3, 3 are mutually continuous through the joint member 10. |
