Building Code Interpretation - How To Use Concentric Circles For Measuring Steps in Winder Walk Line

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Published 2021-11-24

www.homebuildingandrepairs.com/codes/index.html Click on this link to learn more about stair safety, building codes and design. I will provide my interpretation of a building code that might help you design your next set of winder stairs or curved stairs. Keep in mind to always check with your local building and safety departments if you have them to verify whether or not you can use the information in this video.

Page 60 in 2012 International Building Code Book
Reference number - R311.7.4

All Comments (3)

@Xonikz 2 years ago

That inside curve for the final 22.5 4 step did the trick. I was building into a smaller existing barn loft access and the winder math wasn't going to work for code. Adding a rounded pillar shape to the inside corner allowed the measurements to work visually without having to convince anyone of anything and the guy passed the inspection without complaint.
@csk11 2 years ago

Great in depth explanation!