Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by origin]
6. biological material
7. plant material
8. [wood and wood by product]
9. wood (plant material)
10. [wood by form or function]

Anotations

Scope note:

Wood in the form of long, wide, square-sawn, smooth, flat pieces. A plank is typically characterized by being a length of timber sawn for building or other purposes to a thickness of from two to six inches, a width of nine inches or more, and eight feet or upwards in length.