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Step 3 · Determine Total Run

The total run is the horizontal distance the stairs will occupy. This will depend on the available space and the desired tread depth, which is influenced by the riser height and code requirements. For alternating tread stairs, the 'run' per step is essentially the depth of the tread. You'll need to calculate this based on the angle and space.

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Step 3 · Determine Total Run

The total run is the horizontal distance the stairs will occupy. This will depend on the available space and the desired tread depth, which is influenced by the riser height and code requirements. For alternating tread stairs, the 'run' per step is essentially the depth of the tread. You'll need to calculate this based on the angle and space.

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Calculate Total RunCalculate Unit Run and Total RunMeasure Total Run

Tools and Materials

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How to Measure Alternating Tread Stairs

Step 3 of 10·6.6 hr left

Determine Total Rise
15 minutes2 items
Calculate Nominal Riser Height
10 minutes1 items
3
Determine Total Run
15 minutes1 items
4
Calculate Tread Depth and Nosing
20 minutes2 items
5
Mark Stringers for Treads and Risers
60 minutes5 items
6
Cut Stringers
75 minutes4 items
7
Cut Treads
45 minutes4 items
8
Attach Stringers to Floor and Landing
30 minutes4 items
9
Install Treads
90 minutes4 items
10
Install Handrails and Guardrails
60 minutes5 items
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