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. [vaults and vault components]
11. vaults (structural elements)
12. [vaults by construction]
13. ribbed vaults

Anotations

Scope note:

Vaults consisting or solid concave-sided semicones, meeting or nearly meeting at the apex of the vault, the areas between cones being flat, and the whole being given a highly decorative treatment with ribs that fan out from the vault's springing.