Stair rise and run

Learn how to properly measure the rise and run of stairs for a safe and comfortable staircase. Get expert tips and tricks for ensuring your stairs meet building codes and provide a seamless transition between floors.
Michael Maines explains 2 rules for building comfortable stairs. As the rise goes down, the run needs to go up correspondingly, or vice versa.   The rise plus the run (r+R) should be within an inch of 18”. Twice the rise plus the run (2r+R) should be within an inch of 25”.  To read the full article, click the image - Fine Homebuilding #BuildingStairs #Stairs #StairRun #ComfortableStairs #HowTo #Carpentry Decks, Outdoor, Architecture, Building A Deck, Stair Builder, Building Stairs, Building A House, Stair Plan, Deck Stairs

Michael Maines explains 2 rules for building comfortable stairs. As the rise goes down, the run needs to go up correspondingly, or vice versa. The rise plus the run (r+R) should be within an inch of 18”. Twice the rise plus the run (2r+R) should be within an inch of 25”. To read the full article, click the image - Fine Homebuilding #BuildingStairs #Stairs #StairRun #ComfortableStairs #HowTo #Carpentry

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Fine Homebuilding
Stair tread depth? - Specific Inspection Topics / Interior Inspections - InterNACHI®️ Forum Stairs Measurements, Stair Rise And Run, Stair Dimensions, Stairs Treads And Risers, Stairs Width, L Shaped Stairs, Stair Layout, Deck Stairs, Standard Staircase

I am looking for information on the minimum stairway tread depth. I came across a Carson Dunlop photo and it states 9 to 9 1/4 inches. According to NACHI, 10 inches is recommended. I am not necessarily interested in what code says but stating a safe tread depth to navigate the stairwell safely.

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Maria Aloha