Stair rise & run geometry
Explore equal risers and a straight flight horizontal run.
How this works
Equal riser height = total rise / riser count; straight flight has one fewer tread than risers.
Example
Using the example inputs, rise per step is 175 mm.
- Total vertical rise
- 2.8 m
- Number of risers
- 16
- Tread going
- 0.28 m
- Rise per step
- 175 mm
Scope and assumptions
Geometry only, not a safe stair design or code check. Landings, headroom, handrails, and local requirements are not evaluated.
OpenStax mathematics reference