Stair type fit check
What Fits Up Geometric Stairs?
36 in usable width, 80 in headroom. Geometric stairs often behave like L-shaped stairs with a curved or shaped landing.
grandmoderate navigation
Typical Stair Measurements
Clear width
36"
Tread depth
10"
Riser height
7.5"
Headroom
80"
Turn
90 deg
These are planning defaults. Measure your real stairway before buying, moving, or booking delivery.
Fit Notes
- The landing shape determines the pivot path.
- Do not assume a square landing if the inside edge is clipped.
- Check wall art, railings, and pendant lights around the turn.
What Fits?
3-seat couch
Often works if carried upright and the landing has enough pivot space.
Queen mattress
Usually clears on edge because thickness is the limiting dimension.
Folded treadmill
Remove console parts when possible and check landing swing clearance.
Upright piano
Weight, balance, and landing turns usually require professional movers or another route.
Check Your Specific Item
Enter your item dimensions and staircase details to test the exact width, turn, landing, and headroom constraints.
Open Stair Fit Calculator
