| 摘要 |
PURPOSE:To prevent generation of a swaying of a stair. CONSTITUTION:A cantlever 3 is provided projecting at the side surface of a frame body 2. While an opening 5 is provided to a wall member 4 provided to the side of the frame body 2, the cantilever 3 is inserted to this opening 5. A stair pillar installing metal 6 is fixed to the tip of the cantilever 3. A stair pillar 7 to hold the stair is installed to the stair pillar installing metal 6. The stair pillar 7 can be installed to the cantlever 3 provided projecting to the frame body 2 through the stair pillar installing metal 6, and the stair pillar 7 can be held solidly by the frame body 2 and the cantilever 3 which have a high strength. |
