Deck Stair Calculator. Deck stairs are built just like the remaining portion of the deck. When adding deck stairs, you simply fasten deck boards (steps or treads) to the tops of stair stringers and attach the steps to your deck. You can make the stair stringers yourself otherwise you may be able to find pre-made stair stringers but even the pre-made stringers will need some designing based on the height of your deck.
The easiest way to figure out how many steps your stair stringers will be required is to use the very simple rule of dividing the height on your deck by the riser height of your steps (and round to the nearest number). Risers are usually 6 to 8 inches high. The height of your deck is measured from the ground to the the surface of the deck board where you will step onto the deck. Therefore if you want 7 inch risers and the height of your deck is 48 inches then 48/7 = 6. 86 steps. After rounding, you can build 7 steps. The 2 main components required to build deck stairs are stair treads and stair stringers. The treads are usually made using 2×6, 2×8, or 2×10 while the stair stringers are almost always made from 2×12’s, which can be actually 1 . 53×11. 253. You might want to use pre-cut stair stringers to save your self some time on measuring, layout, and cutting.
It is easier to build deck stairs on the ground before attaching them to the deck but they get weighty once all of the stair treads are attached to the stair stringers, which makes them challenging to properly and safely control into position at the deck. The most effective compromise is to attach your stringers together first and also only a few stairs treads on before attaching the stairs for the deck. Make sure to use strong hardware such as lag screws or hex bolts when attaching your deck stairs as the implications of failing steps can be disastrous (hopefully this is obvious). Deck stair calculator metric, deck stair calculator Australia, deck stairs calculation table, deck stair cost calculator.
See also: Vinyl Stair Railing Kits
Deck Stair Calculator Gallery