Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. clay
8. [clay by product]
9. brick (clay material)
10. [brick by form]
11. [brick by form: shape or size]
12. great brick

Anotations

Scope note:

Bricks of larger than normal dimensions made to evade the early brick tax in England, which was levied simply on the number of bricks manufactured. Subsequent legislation eliminated the advantage of using such bricks (which were more difficult and expensive to use anyway); thicker than usual bricks remained in use, however, particularly in the North and Midlands.