Request changes for Treads and Risers
| Element | Description | Element Code | Essential | Uniclass 2015 |
|---|---|---|---|---|
| Treads and Risers | The alternating horizontal (treads) and vertical (risers) elements that make up a set of steps. The Treads and Risers element should be used where steps provide access to a structure, instrument, building, etc. | TRR | No | Pr_25_30_90 |