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Sheet1
Stair Riser Calculator
http://www.homeconstructionimprovement.com
Notes: Before you begin you'll need to gather some imformation from your local building officials. You will need to know what the code requirements for rise and run of stairs are in your location. The example numbers contained in this spreadsheet are only an example. You must know what code requirements must be met in your location.
If you're interested in reading more about building a set of stairs please visit:
http://www.homeconstructionimprovement.com/2007/11/building-staircase.html
Input Section (Enter values in the blue boxes)
Total Height of Stairs Required
inches
Local Maximum Riser Height
inches
Local Minimum Riser Height
inches
Local Minimum Tread Depth (run)
inches
Local Minimum Tread Overhang
inches
Local Maximum Tread Overhang
inches
Calculations (Do Not Enter Data)
First Calculation of number of risers =
inches
Actual rounded number of risers =
risers
Run
Actual Riser Height Needed =
inches
Rise
Code Check Riser Height Within Allowables =
Run
Tread Depth (with min. overhang)
Rise
Tread Depth (with max. overhang)
Note: If the code run is 10", a 5/4 x 12 works well at 11.25"
Stair Design Summary
Run =
inches
Rise =
inches
Number of Risers =
risers
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