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>
............................<結構元素構造>
................................<軋製鋼材>
|||....................................角鋼
|||....................................槽形材
|||....................................H型樑
|||....................................I型樑
|||....................................T型梁
|||....................................寬緣梁
................................<拱券、圓頂或拱頂構造>
|||....................................拱冠
|||....................................拱外弧面
|||....................................拱內弧面
....................................拱肋
....................................楔石