Waist Slab Flight
By Huu Khanh Nguyen · Updated October 28, 2026 · stair, flight
A cast concrete flight of stairs, one solid body whose steps sit on a sloping slab.
Parameters
| Name | Default | Unit |
|---|---|---|
| Number of risers in the flight (the lower floor and the upper level count as floor, so the flight has risers - 1 treads) | 12 | |
| Riser height | 150 | mm |
| Going, nosing to nosing (y) | 280 | mm |
| Clear width of the flight (x) | 1600 | mm |
| Nosing overhang beyond the riser face (y) | 25 | mm |
| Waist thickness, measured perpendicular to the slope to the inner corner of riser and tread | 120 | mm |
| Bearing on the upper level, from the riser line to the end face (y) | 110 | mm |
| Finish | white | |
| Width (x) | width | mm |
| Height of the upper level above the lower floor (z) | risers * rise | mm |