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Stair calculator

Residential code compliance · IRC / IBC

Dimensions

Risers

15

Riser height

7.20in

Total run

11.67ft

Treads

14

Angle

37.6°

Stringer

14.73ft

Code compliant

Meets IRC / IBC residential requirements

Code checks

Riser height4–7.75in
Tread depthmin 10in
Stair widthmin 36in
Nosing0.75–1.25in
Angle25–45°