| 摘要 |
PROBLEM TO BE SOLVED: To drain a large quantity of water from an elevated road. SOLUTION: This drain structure for the elevated road supported by a supporting pier 12 is provided with a floor board 20, a waterproof layer 25 arranged on the floor board 20, a water permeable asphalt layer 30 arranged on the waterproof layer 25 for forming a road surface 31, and drain pipes 61 and 62 passing through the waterproof layer 25 and the floor board 20 in the vertical direction for draining water penetrating the water permeable asphalt layer 30. Groove parts 51, 52, and 53 are formed on the upper face of the floor board 20, and the upper end parts of the drain pipes 61 and 62 are connected to the groove parts 51, 52, and 53. |
