Deck Stair Formula
Outside frame first rise below deck.
Deck stair formula. Then screw through the back of the deck rim into the skirts with three more deck screws. Inside frame first rise below deck. Tack the skirts to the rim with 3 in. Either b or c is required.
When attaching stair stringers use a level to draw two plumb lines to mark the left and right positions for the skirts and horizontal lines to mark the top tread location. Probably right unless it s the first time you ve tackled the task. Home stairs calculator. To simplify the process we ve created this deck stair calculator to help you determine the correct measurements needed to carry out your project.
Laying out basic stair stringers to ensure level tread cuts and plumb riser cuts on stair stringers it s crucial to get the layout right. Be sure to recalculate any changes before printing. The stringer mount type refers to how the stringer will be attached to the upper landing or deck frame. Deck stair layout 101 deck stair layout is simple right.
Treads may be cut to suit other widths. With numerous stair calculators available figuring rise and run dimensions is easy. Having the right calculations before getting started can make the task a lot easier. We suggest 10 5 for 2x12 or 2 2x6 treads.
Enter total stair rise inches. All results given in inches after stringer is measured cut thickness of one tread from bottom.