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. hydraulic structures
9. [hydraulic structures by function]
10. dams (hydraulic structures)
11. [dams by construction]
12. earth dams

Anotations

Scope note:

Dams in which the embankment is constructed in successive mechanically compacted layers, using sheepsfoot rollers or heavy pneumatic-tired rollers to compact the fill. Rolled-fill is the most commonly used method of earth dam construction.