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. [spanning and projecting structural elements]
10. [arches and arch components]
11. arches
12. [arches by location or context]

Anotations

Scope note:

Arches that carry the primary thickness of a wall over an opening, usually a door or window, when the rest of the wall is carried by other means, such as a lintel, an arch of different form or size, or a decorated frame.