| 摘要 |
PROBLEM TO BE SOLVED: To provide a rainwater seepage pit that suppresses falling of a riser pipe member during installation.SOLUTION: A rainwater seepage pit 10 includes a bottomed cylindrical pit body 11 buried underground for temporarily storing rainwater in an inner space; a cover plate 13 fitted on the pit body 11 for closing an opening on a top surface of the pit body 11; a connecting hole pierced through the cover plate 13; and a riser pipe member 15 erected on the cover plate 13 by being connected to the connecting hole. The cover plate 13 has a plate-form support seat 21 mounted on a top surface of the cover plate, and a holding part 22 erected on the support seat 21. A holding member 20 is installed at a periphery of the connecting hole at the top surface of the cover plate 13, the holding member suppressing falling of the riser pipe member 15 by bringing the holding part 22 in contact with an outer peripheral surface of the riser pipe member 15 about to fall and supporting with the support seat 21.SELECTED DRAWING: Figure 1 |
