Means of Egress · IBC 2021 §1011.5 / §1014.2 / IRC 2021 §R311.7.5 / §R311.7.8.1
Stairway Geometry
Stair drawn to scale at the code limits: IBC 7" riser max, 11" tread min; IRC 7¾" and 10". Handrail 34–38" above the nosing line, with the nosing profile.. Referenced to IBC 2021 §1011.5 / §1014.2 / IRC 2021 §R311.7.5 / §R311.7.8.1.
The rest of Stairway Geometry is for members
You're reading the opening of Stairway Geometry. Members see the complete text, every cross-reference and the tools on this page — free for 14 days, no card required.
- The annotated detail diagram with dimension callouts
- The code section it illustrates, in full
- Related diagrams in the same category
- Download and insert into a project
No card required. After the 14-day trial, plans start at $29/mo.
Our previews are real data — live counts, no placeholders. We publish our error log →