| 摘要 |
PURPOSE: To reduce the material of construction by hanging a proper number of rods to sections lower than two inclined handrails and installing several stages of treads at the lower ends of the rods in a stepped shape between the handrails. CONSTITUTION: Two handrails 1 having secure strength even when a person rides on stairs are bridged from a low place to a high place, and rods 2 using flat iron are installed to the undersides of the handrails 1 under the state, in which the rods 2 are suspended. Several stages of treads 3 are mounted at the lower ends of the rods 2 in a stepped shape and the treads at an uppermost stage and a lowermost stage are fixed onto a building respectively, and the treads between the uppermost stage and the lowermost stage are set up to the crossed rods and are not oscillated. Accordingly, the suspended stairs can be assembled easily at a site. |
