| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drainage structure of an underpass part, capable of effectively preventing the underpass part from becoming a water-covered state due to temporary torrential rain or the like. <P>SOLUTION: A rainwater collecting part (U-shaped groove 20) is installed near the most deeply dug area of an underpass part 10, and a rainwater storage penetration tank 30 capable of storing rainwater collected in the rainwater collecting part (U-shaped groove 20) is disposed near it. <P>COPYRIGHT: (C)2012,JPO&INPIT |
