| 摘要 |
<p>PROBLEM TO BE SOLVED: To form a staircase capable of widely using the road width with good working property by vertically arranging a plurality of horizontal bars on a slope, fitting one end of a horizontal fixing bar between them, and fixing the other end to the ground by an anchor pin followed by banking. SOLUTION: A plurality of horizontal bars 1 are vertically arranged in a setting position for staircase of a slope to form a difference in level, one end of a horizontal fixing bar 2 is fitted to a groove provided between the horizontal bars 1, 1 so that the end surface is not protruded from the horizontal bars 1, and fixed by bolts 3. The other end of the horizontal fixing bar 2 is fixed to the ground by anchor pins 4, and gravels or soil is put and compacted to form a road surface banking 5. Since this staircase can be formed only by determining the position of the staircase and driving the slender anchor pins 4, the working property is enhanced. Further, the height of one step can be optionally regulated by selecting number and size of the horizontal bars 1. Since no pile log is used, the width W1 of the staircase can be fully used for walking, so that a walker never trips, and a safe staircase with good appearance can be provided.</p> |
