By Huu Khanh Nguyen · Updated October 28, 2026 · stair, flight
A stair flight whose treads sit between two slender steel stringers, each tread hung on a thin steel rod that fans out to ceiling anchors above.
| Name | Default | Unit |
|---|---|---|
| Number of risers (the flight has risers - 1 treads) | 13 | |
| Riser height | 175 | mm |
| Going, nosing to nosing (y) | 250 | mm |
| Clear width of the flight between the stringers (x) | 900 | mm |
| Tread nosing overhang passed to the tread (y) | 25 | mm |
| Tread thickness passed to the tread (z) | 44 | mm |
| Stringer width across the flight (x) | 30 | mm |
| Stringer height normal to the slope | 20 | mm |
| Hanger rod diameter | 4 | mm |
| Finish of the stringers and rods | white |