STEP MEMBER FOR HOUSING STAIR AND CONSTRUCTION OF STAIR FOR HOUSING

摘要

PURPOSE:To facilitate execution of a work for a stair ground by a method wherein one end part of a metallic sheet is bent downward, the other end is bent upward to produce a step member, and the engaging piece of one step member and the riser part of other stem member are overlapped with each other. CONSTITUTION:Two side beams 6 to support the two end parts of a stem member 1 are arranged on a wall surface and a lowermost step member 1 is caused to span between the side beams 6. The end parts of a tread part 2 and riser part 3 are fixed to the side beams 6 and support materials 9 by means of a wood screw 16. The lower end part of the riser part 3 of the step member 1 is overlapped with an engaging piece 4 of the step member 1 previously arranged and fixed by means of the wood screw 16. An overlapped part between the engaging piece 4 and the riser part 3 is fixed by means of a tapping screw 17. This constitution facilitates an assembly work and reduces a cost.