The first thing is to determine the height that you need to go. Our example is 21" height. The risers are each 7 inches and there will be three steps, one every 7 inches. The tread (surface of the step) is a comfortable distance - 10 inches.
* Circular saw
* Hand saw
* Tape measure
1. Use a square, put the front number on 7", and the second one on 10" - draw it in. That is where you will cut.
2. Slide the square down, and do the exact same thing over again. 7" on the left. 10" on the right. This will be your second cut.
3. Slide it down one more time for the third riser. 7" on the left. 10" on the right.
4. Hold it up to the deck and show how it looks and measures up
5. You will cut straight down because that is the part that will mount on to your frame. Continue the cut all the way across because that will be setting on the ground. Since the circular saw canít cut this corner without weakening the board, you will have to finish it with a hand saw. Hold it up to the deck and see how it looks.
TIP: Put an "x" on the part you are not going to keep so you don't get confused while you're cutting.
6. Use the first piece of the stair frame as a template to mark the second part of the frame. Once it has been cut, this piece will match the first piece exactly.
7. Measure another plank of wood to 7" to cut the risers - cut 3.
8. Measure another plank of wood to 10" for the tread - cut 3.
9. Hammer everthing into place securely.
Each riser will be 7" in height. You CAN adjust these dimensions somewhat, but remember, itís best to make sure your steps comply with building codes. The uniform building code requires risers be 4" to 7" in height, and treads be 9" to 11". But, itís best to check with your local code enforcement to make sure.
TO DETERMINE RISER HEIGHT: Divide the common number until you come to a good riser height.
# of Steps / Hieght = Riser
4 / 25" = 6.23"
3 / 25" = 8.33"
2 / 25" = 12.5"