| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a base for a trestle that can be installed in short time and at low costs by being penetrated through an existing waterproofing layer without newly building a foundation made of concrete.SOLUTION: The base for a trestle is provided with: a post member having a screw groove formed on the outer periphery thereof; a round type nut to be attached to a position near a lower end of the post member; a base plate to be attached to a predetermined height position from the lower end of the post member; a plate nut to be screwed onto the base plate of the post member; and a nut and a washer that are screwed to an apex part of the post member. Since the lower end part of the post member including the round type nut is inserted and fixed into an installation hole filled with a filling/adhesive material until a lower face of the base plate contacts an installation surface, the base for a trestle can be installed in short time and at low costs by being penetrated through an existing waterproofing layer without newly building a foundation made of concrete.</p> |
