| 摘要 |
PURPOSE:To facilitate fitting work, make work labor-saving and improve safety by utilizing a stair easily formed of stair units with stair parts jointed to landings to be connected to the stair parts, and the stair units. CONSTITUTION:An upper half stair part A1 and an entrance side landing B1 are assembled on the ground to manufacture a first stair unit 01. A second stair unit U2 is manufactured in the same way from a lower half stair part A2 and an intermediate landing B2. The second stair unit U2 is hung in, the intermediate landing B2 is fitted to a support 3, and the lower half stair part A2 is fixed to an entrance side landing B3. The first stair unit U1 is then hung in. The entrance side landing B1 is level-adjusted by a level adjusting means and a dowel bar at the upper end part of a semi-PC beam D and fitted to the semi-PC beam D, and the upper stair part A1 is fixed to the intermediate landing B2 to fit a stair 1 to a staircase 2. |
