Stair type
Code limits
Preset values are typical National Building Code figures. Check the current edition and your authority’s rules, and edit them for your project.
Risers—
Riser height—
Treads—
Stairwell (plan)—
Enter the floor-to-floor height and get risers, treads, flights and the stairwell size, checked against the limits for your building type.
Preset values are typical National Building Code figures. Check the current edition and your authority’s rules, and edit them for your project.