藝術與建築詞典根目錄
....物件層面
........組件 (層級名)
............成分
................<依特定背景區分之組件>
....................建築元素
........................<結構元素與結構元素構造>
............................<結構元素>
................................<跨接與外伸結構元素>
....................................樑 (結構元素)
........................................<依支撐條件區分之橫樑>
|||............................................連續樑
|||............................................簡樑
........................................<依形式區分之橫樑>
|||............................................箱形樑
............................................組合樑
|||............................................箱型梁
............................................大樑
............................................托樑