Manhole Spacer

Abstract

As shown in the reference drawing indicating the usage state, when a step occurs between a road surface marker such as a manhole cover and the ground, this article is placed between a receiving frame for receiving the road surface marker and a concrete box, and the height of the road surface marker is adjusted to eliminate the step with the ground. Depending on the magnitude of the step between the road surface marker and the ground, two or more of this article can be stacked and used. As shown in the plan view, bottom view, sectional view taken along line A-A', and sectional view taken along line B-B', this article has a configuration including a total of seven long holes, four long holes of substantially the same size in a circular annular body and three long holes smaller than the four long holes and of substantially the same size. With this article placed between the receiving frame of the road surface marker and the concrete box, this article and the receiving frame of the road surface marker are fixed to the concrete box by passing a fastener such as a bolt through at least two or more of the seven long holes.

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