| 摘要 |
PURPOSE: A rainwater storage tank is provided to reduce construction time by using previously manufactured perpendicular structures. CONSTITUTION: A rainwater storage tank comprises a lower structure(100), perpendicular structures(200,300), and a connection structure. The lower structure has a groove portion(110) and multiple upper bolting holes. The perpendicular structures are placed on the top of the lower structure and have groove portions(210,310), lower bolting holes, and protrusions(220,320). The connection structure has two protrusions(420). One of the protrusions of the connection structure is coupled to the groove portions of the lower structure and one perpendicular structure, and the other one thereof is coupled to the groove portions of the lower structure and the other perpendicular structure.
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