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. built work divisions
7. rooms and spaces
8. [rooms and spaces by function]
9. [spaces for bath, dressing and sanitary uses]

Anotations

Scope note:

Rooms or spaces that are within buildings and have one or more seats and a pit used as toilets which lack plumbing facilities, distinguished from "outhouses" which are separate structures in domestic contexts containing similar arrangements of toilet facilities. For rooms or spaces with toilets having plumbing, use "bathrooms" or "lavatories (rooms)."