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Step 5 · Mark Stringers for Treads and Risers

Using the calculated riser heights and tread depths, carefully mark the stringers. For alternating tread stairs, the layout will be asymmetrical. Mark the positions for each tread nosing and the bottom of each riser. Ensure that the marks for the treads alternate in their depth from the center line of the stringer, and that the riser heights are consistent. Double-check all measurements before cutting.

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Step 5 · Mark Stringers for Treads and Risers

Using the calculated riser heights and tread depths, carefully mark the stringers. For alternating tread stairs, the layout will be asymmetrical. Mark the positions for each tread nosing and the bottom of each riser. Ensure that the marks for the treads alternate in their depth from the center line of the stringer, and that the riser heights are consistent. Double-check all measurements before cutting.

Videos for this step

Mark Stringers Using Stair GaugesLayout Stair Stringer (Part 1 - Treads & Risers)Mark the Stringers and Adjust for Treads

Tools and Materials

← Project

How to Measure Alternating Tread Stairs

Step 5 of 10·6 hr left

Determine Total Rise
15 minutes2 items
Calculate Nominal Riser Height
10 minutes1 items
Determine Total Run
15 minutes1 items
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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