REPAIR METHOD FOR DRAINAGE GUTTER AND COVER BLOCK FOR REPAIR

摘要

PROBLEM TO BE SOLVED: To provide a repair method for a circular gutter having a water channel with a circular cross-section, and a cover block used in the repair work.SOLUTION: A repair method is for a circular drainage gutter, and comprises the following steps performed in sequence: a longitudinal cutting step for cutting in a longitudinal direction a block part above a circular water channel, at both edges of the water channel in a width direction; a provisional water channel formation step for removing a wasted part above the water channel that was cut in the longitudinal cutting step and provisionally forming the water channel into that with a U-shaped cross-section; a transverse cutting step for cutting in a transverse direction an upper part of a side wall 6 on right and left of a gutter block obtained in the provisional water channel formation step; a repair block formation step for removing a wasted part above the side wall 6 cut in the transverse cutting step, and provisionally forming a repair block B with a side wall of low height; and a cover installation step for placing and fixing a cover block C on the repair block B with a side wall of low height obtained in the repair block formation step. Repair work is possible that enables an old circular gutter to be recycled into a drainage gutter and perform a function as a drainage block again.SELECTED DRAWING: Figure 1