Stringer Calculator

Deck Height (Ground to top of deck) Stairwell Depth Total number of steps including top of deck Top decking material thickness Stringer Width (should be at least 10 inches. 12 is better)

Rise Run Ratio (should be around 24-25. Adjust depth or steps to fix) Stairs Angle (30 to 40 degrees is best) Stringer Steps Stairwell Height Stairwell Depth Stringer Ln

L) Stringer Length A) Stringer Edge Marks B) Step to Step Dist C) Stringer 1st Top Mark D) Mark on bottom edge - Left E) Mark on bottom edge - Right F) Stringer attach point on wall down from top of deck

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1. Cut the stringer to length [L] 2. On the left and right edges place marks [A] down from the top. Connect marks with a line 3. On line put marks [B] inches from each other 4. On the top edge of the stringer place a mark [C] from the left edge 5. On the top edge now make marks starting at mark [C], [B] inches apart 6. On bottom edge place a mark [D] inches from the left side 7. On bottom edge place a mark [E] inches from the right side 8. Connect all marks 9. Take a piece of decking material and use to draw a line on the bottom of the bottom step. 10. Cut out stringer. Remove area on bottom step drawn in Step 9 11. Attach to deck. Stringer will be attached [F] inches down from the top edge of the deck.