| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a foundation structure of a variable home fence device capable of doing the foundation work of the variable home fence device within an allowed time zone, and capable of adopting even an existing line. SOLUTION: A fitting groove 15 in which a base member 20 is fitted is bored in a circular shape in section onto the upper surface 11 of a platform 10, ad a penetrating hole 17 of the same circular shape in section penetrating from the nearly middle part of the groove bottom 16 of the fitting groove 15 to the undersurface 12 of the platform 10 is formed, and the fitting groove 15 and the penetrating hole 17 can be penetrated by using an electric drill with a tool, for instance, a hole-saw or the like, and drilling can be performed in a short time by exchanging the hole-saws different in its diameter.</p> |
