| 摘要 |
A modular section for forming a support structure, the section being elongated and having a generally annular cross-sectional configuration with spaced upper and lower surfaces and spaced side walls, the upper and lower surfaces and side walls forming upper and lower edges, respectively, at the interfaces, wherein the upper and lower surfaces each comprise an extension at the respective upper and lower edges, the extensions having a flange formed at the ends thereof, and where the upper and lower surfaces each have a groove formed therein.
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