| 摘要 |
PURPOSE:To easily and safely construct a ceiling formed of a grating ceiling bed consisting of a cradling, a cradling receiver, and a connecting metal fitting for them; and a ceiling plate mounted on the lower surface with extremely high efficiency. CONSTITUTION:A working bench 7 arranged in a height suitable for a worker to perform an assembling work, standing on a floor surface, and a portable lifter 8 for raising the working bench 7 are set on the floor surface, and a grating ceiling bed B consisting of a cradling 19, a cradling receiver 20, and a connecting metal fitting 21 for them is assembled on the working bench 7. Thereafter, in the state where the working bench 7 is raised by the portable lifter 8, and the ceiling bed B is lifted in a proper height, the ceiling bed B is connected to a plurality of hanging jigs 18 preliminarily suspended in a prescribed positions of the floor system of the upper floor. After the working bench 7 is lowered, a ceiling plate is mounted on the ceiling bed B. |
