| 摘要 |
PROBLEM TO BE SOLVED: To prevent floor plates of stairs from the positional shifting, by connecting the superposed position of a tread with a rise with a belt-form adhesive layer and a butyl rubber sticking material layer. SOLUTION: A tread face 11 made of a checkered steel plate in a floor plate 5 is superposed with a rise 12 continuously connected thereto. The superposed positions are joined by a butyl rubber sticking material layer 61 or an adhesive layer 62. The adhesive layer 62 in these layers 61, 62 is applied so as to cross the tread face 11 and form a belt at the rear part of the tread face 11. The rear end edge 53, the right and left side end edges 54, 54, and the front end edge 52 of the floor plate 5 are connected to the tread face 11 with a sealing agent 7. After an urethane or silicone quick-drying adhesive has been used for the adhesive layer 62 for instance to construct the floor plate, the time until it can be used is reduced. Since the floor plate and the tread face are connected by not only a butyl rubber sticking material layer but also an adhesive layer, delaminating or positional shifting is not feared in an ordinary use condition. |
