Double Return Stair
By Huu Khanh Nguyen · Updated October 29, 2026 · stair, unit
A stair with one central flight up to a wide landing and two side flights leaving it in opposite directions, fitted to the floor-to-floor height. Risers and width of the central and side flights Side flights leaving sideways or returning back Flight construction and tread Starting step: straight, bullnose, bowed or curtail
Parameters
| Name | Default | Unit |
|---|---|---|
| Riser Height | 175 | mm |
| Going | 250 | mm |
| Central Flight Width | 1000 | mm |
| Side Flight Width | 1000 | mm |
| Risers In Central Flight | 8 | |
| Risers In Each Side Flight | 8 | |
| Side Flights | 90 | ° |
| Gap Between Central And Side Flight | 200 | mm |
| Landing Depth Beyond Widest Flight | 0 | mm |
| Landing Thickness | 147 | mm |
| Floor To Floor Height | rise * (centralRisers + sideRisers) | mm |