How to Build Stair Stringers with Wayne Lennox

Moments in this video

1. 0:51–1:37 Calculate Individual Step Rise and Total Run From How to Lay Out and Cut Deck Stair Stringers, Step 1: Determine Stair Riser Height and Tread Depth

   After determining the total rise (e.g., 43.5 inches), calculate the individual step rise based on local building codes. The example code states a step must be between 4 7/8 inches and 7 7/8 inches. The presenter prefers a 7-inch rise. Dividing 43.5 inches by 7 inches suggests approximately 6 steps. To get an exact, even rise, divide the total rise (43.5 inches) by the whole number of steps (e.g., 6 or 7). The presenter determines 6 steps at 7-1/4 inches each will give a total rise of 43.5 inches. For the 'run' (horizontal depth of each step), a typical tread is 10 inches. With 6 steps, the total run will be 60 inches (6 steps * 10 inches/step). Verify that the ground at the 60-inch mark from the deck maintains a consistent height or adjust the final step if needed.

The guide that use this video

• How to Lay Out and Cut Deck Stair Stringers