| 摘要 |
PURPOSE:To progressively construct stairways using temporarily supporting members conventionally used in situ. CONSTITUTION:Supports 5, 6 are erected at the place where stairways are to be constructed. After that, a second landing member 8 is mounted on the support 6, using a lifting crane and landing members 11, 11a to which first and second stairway members 9, 10 are connected are temporarily constructed, following which the second stairway member 10 is fastened to the landing member 8. Concrete is placed between a floor 1 on the first floor and another floor on the second floor and after the hardening of the concrete, the supports 5, 6 are removed, following which the lower end part of the first stairway member 9 is fastened. In this way, these support are erected each time the floor is raised by one floor and the stairways are progressively constructed, corresponding to the progress of a building body. |
