| 摘要 |
PROBLEM TO BE SOLVED: To mainly dispense with installation of rainwater centralized treatment facilities and the like.SOLUTION: In rainwater drainage equipment 4, a drain pipe 3 is buried in ground 2 along a street 1. A storage pipe 21 is buried in a linear part 13 constituting the street 1. A shaft 22 for a hub is buried int a crossing part 14 or a corner part 15 of the street 1. The storage pipe 21 of the linear part 13 is network-connected to the shaft 22 for the hub in the crossing part 14 or the corner part 15. Furthermore, an orifice 24 for regulating discharge of drainage of rainwater is provided on the downstream side of the storage pipe 21a that is installed in the lowest position.SELECTED DRAWING: Figure 3 |
