STAIRCASE STRUCTURE, FIXING IMPLEMENT, AND METHOD FOR ASSEMBLING THE STAIRCASE STRUCTURE

PROBLEM TO BE SOLVED: To provide a staircase structure which has high productivity and constructibility and which can improve beauty and increase strength against a load, a fixing implement, and a method for assembling the staircase structure. SOLUTION: A protrusion 23 protruding outward longer than the thickness of an angle is integrally provided at a base end of a horizontal plane portion 22 of the angle-like fixing implement. A worker screws an inner back surface 51a of an insertion hole 51, which is formed in a screw surface 11a of a side plate 11, to a wall. After that, the protrusion 23 is inserted into the insertion hole 51; and in this state, a vertical plane portion 21 of the fixing implement is screwed to the screw surface 11a. Subsequently, the horizontal plane portion 22 is screwed to a treadboard 10 in a state in which an inner surface 22a of the horizontal plane portion 22 and an undersurface of the treadboard 10 face each other. Finally, the vertical plane portion 21 and an end of the treadboard 10 are covered with a covering member 31. COPYRIGHT: (C)2011,JPO&INPIT