| 摘要 |
PURPOSE:To facilitate simple execution of works, prevent unevenness from occurring to strength and accuracy and facilitate execution of works after construction. CONSTITUTION:The ceiling frame is constructed of a framework 10, made up of structural steels 11 and 14 in a rectangular shape, and a heat-insulating material 2 put for covering over one side of the framework 10. The structural steels 11 on two sides facing each other of the framework 10 are equipped with grooves 12 that face inward each other. A plurality of sliding structural steels 13 are fitted into the grooves 12 formed to the structural steels 11 so that the sliding structural steels intersect the structural steels 11 at a right angle and are made slidable in the direction of the grooves of the structural steels 11. |
