| 摘要 |
The structure has vertical posts connected together by multiple connectors (7), where the connectors include a top connector and a bottom connector. The connectors are used to assemble railing frames following a single non-derogable procedure. An inverted U-shaped starting element is fitted onto connecting pieces on the ground. A ladder-shaped end frame is fitted over a railing (6), and each vertical post is terminated at upper and lower ends by three tubular housings aligned perpendicular to horizontal bars. |
