| 摘要 |
PURPOSE:To secure a ventilating space by erecting a support in an indoor stair way, supporting upper and lower stair parts and stair landing parts on this support and beam materials and making the head ends of the stair landing parts free ends. CONSTITUTION:Supports 2 are erected facing each other on both sides of an indoor stair way 1, beam materials 3 are installed between this pair of the supports 2, and upper stair parts 4 and lower stair parts 5 are connected and supported. Additionally stair landing parts 6 are supported overhung on the supports 2 and the beam materials 3, the head ends of the stair landing parts 6 are made free ends, and the upper part and the lower part of the stair landing parts are communicated through to each other. Then, an upper space 8 of each of floors F1, F2 adjacent to the stair way 1 and the space of the stair way 1 are communicated through to each other, and an integral space is constituted. Consequently, it is possible to increase freedom of indoor constitution by securing a ventilating space. |
