You'll use the framing square tool to make right-angle cuts in the treated wood. Next, do some simple math to calculate the height of each step. According to AdamDIY, the height is 21 inches from ...

How to Calculate Stair Risers Divide “X” by seven inches (an approximate step height) and round off the remainder, up if it’s .5 or more, or down if it’s less than .5. That will give you ...