Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Single Built Works (hierarchy name)
5. single built works (built environment)
6. [single built works by specific type]
7. [single built works by function]
8. transportation structures
9. transportation buildings

Anotations

Scope note:

Buildings housing facilities that provide electrical power to transportation systems. For buildings that gather or distribute electricity to businesses and homes, use "power plant buildings (utilities buildings)."