NBC 2016 gives 190 mm max riser and 250 mm min tread for residential stairs, a comfortable 2R + T of 600–650 mm, and at least 2.1 m headroom. Many designers aim for 2.2 m.
Risers–
Riser height–
2R + T–
Stair length–
Section
Plan
Code checks
Step schedule level of each tread nosing above the lower floor
| Step | Flight | Height (mm) | Going from start (mm) |
|---|