| 摘要 |
A container (10) for transporting and storing materials comprising a sloped bottom structure (12), having a drain opening (24) located within a sump (19) at the lowest elevation therein, a plurality of channels (21) intersecting the perimeter of the sump (19) extending downward from the bottom structure (12) into the sump (19), and one or more bends (20) in the bottom structure (12) forming sloped sections (23) of the bottom structure (12), where the sections (23) sloped downward toward the drain opening (24). The bottom structure (12) further comprises a drain elbow (14) connected to the bottom of the sump (19) and a reinforcing ring (22) welded (25) to the bottom of the sump (19) and to the drain elbow (14).
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