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. structural assemblies
10. architectural orders (assembly and style)

Anotations

Scope note:

Refers to architectural orders where columns, pilasters, or piers extend over two or more stories. It has roots in Roman architecture, where one arch could span more than two sections of an elevation, but it was fully developed in the Renaissance and beyond.