| 摘要 |
PROBLEM TO BE SOLVED: To provide a rainwater storage device which facilitates cleaning and inspection of a water collecting tank thereof while ensuring the strength thereof. SOLUTION: The rainwater storage device is formed of the water collecting tank 4 which is arranged on a bottom surface of an installation hole 12 obtained by excavating the ground 11 and set up by combining a plurality of box units 17, 18 with each other. The box units 17, 18 each have an inspection hole 26 formed in a side surface 19 or 20 thereof, which is large enough for a worker to pass therethrough. COPYRIGHT: (C)2004,JPO&NCIPI
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