| 摘要 |
PROBLEM TO BE SOLVED: To provide a temporary stepped stairway easily installable by changing the gradient according to a working space at the installation position. SOLUTION: This temporary stepped stairway 10 is so formed that multiple stages of step plates 15 are supported, at both ends, on a pair of step receiving support members 14 arranged on both sides, and lifts between an upper story portion 12 and a lower story portion 11 during the construction of a building. The step receiving support members 14 are slidable in the axial direction X. The step plates 15 are so formed that at least a part of the upper part or the lower part can be removed from the step receiving support members 14. Each of the pair of step receiving support members 14 comprises an upper step receiving member 14a and a lower step receiving member 14b arranged parallel to each other. Both ends of each step plate 15 are rotatably pinned to the upper step receiving member 14a and the lower step receiving member 14b at the portions apart an equal distance from each lower end 16 thereof, and supported on the receiving members in the state of being arranged parallel to each other. COPYRIGHT: (C)2008,JPO&INPIT
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