| 摘要 |
A drainage system comprising a frame and a plurality of drainage basins. The frame has at least three pairs of frame engaging elements. Each drainage basin has an outer and an inner surface. Additionally each has a central region with first and second side ends, as well as, first and second frame engaging structures. The first frame engaging structure is positioned at the first side end and includes an inwardly directed leg having a retention lip engagement flange configured to engage one of the frame engaging elements. The second frame engaging structure is positioned at the second side end and includes an inwardly directed leg having an inboard retention lip engagement nub and an outboard retention lip engagement flange configured to engage opposing adjacent frame engaging elements. A slot covering flange extends over the first frame engaging structure. The slot covering flange covers the area formed by the cooperation of the first frame engaging structure of a first drainage basin with the second frame engaging structure of a second drainage basin. |
