| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce cost and man hour of step work by forming the precast concrete-made step into a reverse L-shape by a substantially horizontal step part and a connection part extended in the downward vertical direction from one end of the step part. SOLUTION: A precast concrete-made step 10 is formed into a reverse L- shape by a substantially horizontal step part 11 and a connection part 12 extended in the downward ertical direction from one end of the step part 11. A plurality of sleeve holes 14 are provided on the connection part 12, and bolts penetrate them. A sleeve hole penetrating the rear side is provided in the side face 21 of a precast concrete-made foundation 2, a bolt 15 penetrates it, and a nut 16 is screwed. Thereby the precast concrete-made step 10 is tightened, and connection for the precast concrete-made foundation 2 is completed. Thus, the precast concrete-made step is easily attached to the side face of the precast concrete-made foundation by tightening the bolts.</p> |
