| 摘要 |
PROBLEM TO BE SOLVED: To easily cope with change of treads and rises and simplify the supporting worms or the fitting edge and facilitate the finishing work of the surface and eliminate the wooden frame carpentry. SOLUTION: Treads 24 and rises 26 are formed at one of external wall faces 16 of the first side face member 10 and treads 36 and rises 38 are formed at one of external wall faces 28 of the second side face member 12. One side wall face 40 of the intermediate connection member 14 and the other inside wall face 18 of the first side face member 10 and also the other second side wall face 42 of the intermediate connection member 14 and the other inside wall face 30 of the second side face member 12, are connected to each other by fixing means respectively and then fitted to the floors of the upper and lower stories. Thereafter, shielding plates are put thereon and concrete is placed among the first sideface member 10, the second side face member 12, and the intermediate connection member 14 to form the stairs. |
