| 摘要 |
PURPOSE:To ensure specific size between joined sections of framework horizontal members or to ensure sufficiently a specific angle between the framework members inthe ceiling framework placed all over the single face and to obtain the ceiling framework having high rigidity without the deformation of a unit frame. CONSTITUTION:Horizontal members 20 in length and breadth forming the ceiling framework unit grating have approximately inverted U-shaped sections, and the ends are mounted on bearing plate members suspended with hanger bolts 60. A plurality of fixing open-holes provided to the ends of the horizontal members 20 are fitted to a plurality of upper projections projected to the upper surfaces of the bearing plate members, so that specific size is ensured between joined sections of the horizontal members or a specific angle is ensured between the horizontal members. For maintaining a state of fitting, holding members are used for the horizontal members 20 and the joining plate members to maintain both of them in a state of holding. |
