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>
................................<封閉式結構元素>
....................................<屋頂與屋頂構造>
........................................<屋頂構造>
............................................<屋頂框架構造>
................................................椽
|||....................................................長椽
|||....................................................脊椽
....................................................短椽
|||....................................................主椽
|||....................................................屋谷椽條
|||................................................檐椽接長木
................................................<水平屋頂框架構造>
|||....................................................維樑
|||....................................................簷桁木
|||....................................................檁條
|||....................................................屋脊板 (水平屋頂構造)
|||....................................................跨腰梁
|||....................................................繫樑
................................................<垂直屋頂框架構造>
....................................................桁架中柱
|||....................................................牆架立柱
............................................<外部屋頂構造>
................................................<屋簷與屋簷構造>
|||................................................屋脊樑
|||................................................避雷針
|||................................................屋頂小閣
|||................................................屋脊 (屋頂構造)
................................................<屋頂附屬物>
|||................................................屋脊板 (外部屋頂構造)
|||................................................外露椽
|||................................................攔雪板
|||................................................屋谷 (屋頂構造)
................................................<簷口與簷口構造>