| 摘要 |
PURPOSE: To provide a stair, in which the angle of inclination of a tread for the stair can be changed and the welding of the tread is unnecessitated and cost of which is reduced. CONSTITUTION: A plurality of fixing members 16 and a plurality of support shafts 26 are fixed between a pair of side plates 14, and treads 12 are mounted on each support shaft 26 in a rockable manner. Tapped holes 18 are formed to the fixing members 16, and support means 20 are screwed into the tapped holes 18. The upper ends of the support means 20 projected to sections upper than the fixing members 16 are brought into contact with the bases of the treads 12. The angles of inclination of each tread 12 to the side plates 14 are adjusted according to length, where the support means 20 are projected to the sections upper than the fixing members 16. |
