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. communications structures
9. telecommunications towers

Anotations

Scope note:

Use only for tall concrete, metal, or timber structures of various plans designed to carry power lines; for tall metal structures used to hold radio or television antennas, use "radio towers" or "television towers."