| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that it is unable to increase efficiency of ceiling inside work for requiring manually returning and readjusting work in the case of interference in installing a suspending bolt for suspending piping and wiring or the other equipment by crossing a space required for maintenance of a ceiling hiding apparatus in the other ceiling inside work after installing the ceiling hiding apparatus. SOLUTION: For solving such a problem, this invention proposes an installing method of the ceiling hiding apparatus characterized in that a frame 3 corresponding to the space required for the maintenance is installed outside the ceiling hiding apparatus 1, and is installed in a prescribed position in the ceiling. |
