| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the need for often adjusting inclination for installing a side ditch cover at an accurate place by permitting an inclination formed when the side ditch cover is installed to a side ditch body. SOLUTION: The first inclined sections and the second inclined sections successively inclined on the lower sides from the outsides of the left and the right of the base of the side ditch cover are continuously formed respectively. A distance from a boundary corner section between the first inclined section and the second inclined section on the left side of the side ditch cover to the boundary corner section between the first inclined section and the second inclined section on the right side is formed in length longer than that from the inwall upper end side of a cover hanging section on the left side of the side ditch body to the inwall upper end side of the cover hanging section on the right side.
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