| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the workability of architecture construction work by providing a step below a lower end step of existing stairs through a mounting part provided at a lower end of the existing stairs detachably. SOLUTION: A horizontal member 22 is fixed between upper ends of a vertical member 21 to form a connection part 11. A step part 12 is supported on a lower end of the vertical member 21 so as to turn, and a mounting part 13 is provided by a pair of loading members 27 and a latch member 28 fixed between tip parts thereof. Moreover, the mounting part 13 connects a basic end of the loading member 27 with the horizontal member 22 by a hinge 30, and a hold part 14 is supported at a middle position of the vertical member 21 by the hinge 30 to constitute auxiliary stairs 1. If there is a difference in steps between existing stairs and a floor slab in prefabricated architecture construction work, the loading member 27 is put on a step 26 at a lowermost end of the existing stairs, a protruding part 29 of the latch member 28 is latched on a beam on existing stair side to support a step 12 below the step 26, and the hold part 14 is locked below the step 26. Consequently, the auxiliary stairs can be used stably and folded down so that they can be transported and stored conveniently.</p> |
