Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. architectural elements
7. [structural elements and components for structural elements]
8. structural elements
9. enclosing structural elements
10. [roofs and roof components]
11. roof components
12. roof frame components
13. vertical roof frame components

Anotations

Scope note:

As an architectural term, caojia (literally “draft frame,” Kroll 2015 34, 194), primarily appears in technical manuals such as the Yingzao fashi(1103), Yuanye 園冶 (1631), and Yingzao fayuan 營造法原 (1959). It refers to the roof frame between the interior ceiling (the pingqi 平棊 in Yingzao Fashi and the xuan 軒 or juan 卷 in mansion-hall style architecture of Jiangnan area in Ming and Qing dynasties) and the roof, which is left rough (hence the term “draft”) because it is not visible to the viewer (Chen 2010, 259; Yao 1986, 116).