| 摘要 |
PROBLEM TO BE SOLVED: To provide an invert and a construction method of the invert by which construction is easy without requiring skilled technology, and finishing with high accuracy is possible in a short construction period.SOLUTION: An invert comprises: a flow channel S which is installed at the bottom of a manhole, and connects an inlet 11 and an outlet 12 of sewage, provided on a manhole peripheral wall 13; and a bottom surface part 7 which has an inclined bottom surface 7a for collecting water to the flow channel S. The flow channel S is formed by coupling a plurality of flow channel components 1, 21. The flow channel components 1, 21 form a gutter shape to be a part of the flow channel S, and have coupling parts 4, coupled parts 5, and guide parts 3. The coupling parts 4 and the coupled parts 5 couple other flow channel components 1 21. The guide parts 3 extend in oblique upper parts respectively, toward outer peripheral sides from upper ends of both sides of the flow channel components 1, 21. In the bottom surface part 7, the bottom surface 7a inclines so as to be approximately flush with upper end surfaces of the guide parts 3. |
