Method for reconstructing manhole structure

Abstract

To provide a method for reconstructing a manhole structure without excavating a road paving material and soil existing outside an existing manhole structure which prevents reduction of a minimum width of a lumen of a manhole oblique wall.SOLUTION: In a method for reconstructing a manhole structure that has a manhole oblique wall 1 having a lumen 10 penetrating in a vertical direction y, a lid arranged above the manhole oblique wall 1, and a support member 2 which is arranged between the manhole oblique wall 1 and the lid and supports the lid, the manhole oblique wall 1 has a first part 11 up to 1 / 3 point below an upper end 14 from the upper wall 14 when the manhole oblique wall 1 is equally divided into three in the vertical direction y. The method includes a step of cutting a part which is positioned inside the first part 11 and is positioned right under the support member 2.SELECTED DRAWING: Figure 3

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