| 摘要 |
PROBLEM TO BE SOLVED: To provide a rainwater storage infiltration system which does not give an adverse effect to a building.SOLUTION: A rainwater storage infiltration facility 4A having rainwater storage infiltration function ia buried into a ground adjacent to a side face of a building 2. In the rainwater storage infiltration facility 4A, a water barrier sheet 45 is arranged on a first side face 41 facing the building 2 to form a water barrier face 43. A water permeable sheet 46 is arranged on a second side face 42 not facing the building 2 to form a water permeable face 44, rainwater is prevented from being discharged to the building 2 side, the side face of the building 2 and the first side face 41 are made almost parallel to each other in plan view, and a section between the building 2 and the rainwater storage infiltration facility 4A becomes a simple shape in plan view, thus facilitating the construction. |
