Stairs by floor height · 2.80 m · L-shaped, winders
L-shaped stairs with winders for a 2.80 m floor height
16 risers of 17.5 cm and 15 treads 28 cm deep, at 32°. 1.00 m wide, it takes 2.68 m × 2.68 m of floor. Three winders carry it round the corner, each taking a riser, so it needs no landing.
Open this stair in uCADWhat it’s made of
More or fewer steps
2.80 m (280 cm) can be climbed in fewer, higher steps or more, lower ones. Each opens in uCAD as this stair with that many risers.
| Risers | Each riser | Going | Pitch | Run of a straight flight | How it walks | In uCAD |
|---|---|---|---|---|---|---|
| 14 | 20 cm | 25 cm | 39° | 3.25 m | steeper, fewer steps | open |
| 15 | 18.7 cm | 26 cm | 36° | 3.64 m | steeper, fewer steps | open |
| 16 | 17.5 cm | 28 cm | 32° | 4.20 m | comfortable (drawn here) | open |
| 17 | 16.5 cm | 30 cm | 29° | 4.80 m | comfortable | open |
Limits differ by country: England’s Approved Document K allows a rise up to 220 mm and a pitch up to 42° in a home, Germany’s DIN 18065 up to 200 mm, and both ask for 2.0 m of headroom. Check the code that applies to yours.
What it’s made of
Drawn as it’s built, in timber with open treads: treads housed in the stringers, posts under the turns, a railing on its newels. 223 parts in all, every bolt and weld among them. Sizes in millimetres, length × width × thickness.
| Part | Qty | Length | Width | Thickness |
|---|---|---|---|---|
| stringer (shaped) | 1 | 3164 | 427 | 50 |
| stringer (shaped) | 1 | 3179 | 422 | 50 |
| tread (shaped) | 1 | 1180 | 582 | 40 |
| tread (shaped) | 1 | 1195 | 572 | 40 |
| tread (shaped) | 1 | 1346 | 507 | 40 |
| stringer (shaped) | 1 | 1981 | 264 | 50 |
| stringer (shaped) | 1 | 1968 | 264 | 50 |
| tread | 12 | 1030 | 305 | 40 |
| post, timber 90x90 | 1 | 2740 | 90 | 90 |
| post, timber 90x90 | 1 | 1774 | 90 | 90 |
| post, timber 90x90 | 1 | 1371 | 90 | 90 |
| post, timber 90x90 | 1 | 1190 | 90 | 90 |
| handrail, round 50 mm (shaped) | 2 | 1863 | 49 | 49 |
| baluster, steel square bar 18 mm (shaped) | 22 | 847 | 18 | 18 |
| baluster, steel square bar 18 mm (shaped) | 2 | 846 | 18 | 18 |
Fixings: 3 × tie rod M10x1127, 44 × washer M10, 32 × nut M10, 24 × stud M8x80, glued, 24 × screw 5x45, 3 × bracket, concealed post base 90, 8 × anchor bolt M10x100, 6 × stud M10x117, 2 × anchor bolt M10x200, 2 × bracket, steel angle 100x100x8, 2 × stud M10x85, 12 × bolt M10x170, 12 × nut M10, barrel.
Closed risers, a steel frame, another width or railing: change it in uCAD, and the parts are worked out again, with a cut list of the boards to buy. Sizes of the structure are the library’s defaults for a house stair, not an engineer’s calculation for yours.
Another height or width
Will it fit your room?
Open it in uCAD, draw your walls round it and look: turn it the other way, move the turn up or down, change the width. Or tell the AI: “a stair for 2.80 m in a 2 × 3 m stairwell”, and it draws one that fits.
Same height: Straight · L-shaped, landing · U-shaped, landing · U-shaped, winders · Spiral · Square spiral
This stair for 2.75 m · 2.85 m · all heights