| 摘要 |
PURPOSE:To promote construction efficiency by placing walls to three sides except the central and a skeleton side of a dog-leg stair to make it as a unit, piling up units, and joining the walls to form staircases of a house having a plurality of floors. CONSTITUTION:Walls 3 and 4 are placed to both ends of the front of a dog-leg stair A and, at the same time, a wall 2 is provided at the central part to form a stair unit U. After that, the unit U is piled up, and the walls 2, 3 and 4 are jointed with each other to form staircases of a house having a plurality of floors. According to the constitution, mounting work of the staircase can be simplified. |
