- installations that are set in place intentionally, and appear as either horizontal surfaces or as ordered aggregation, and
- deposits that can result either from either layering or buildup, or else from an amorphous amassment.
The main typological categories (surfaces, build-up, etc.) are listed according to types as defined in the pertinent section of the Grammar.
| Category | Total | Percentage | Definitions | Sub-Total | Percentage |
|---|---|---|---|---|---|
| installation | 1 | 100% | stair | 1 | 100% |
| Total | 1 | 100% | |||