Step 1 · Step 1: Count Your Steps & Gather Your Tools

Start by counting the number of horizontal surfaces you step on—these are your treads. (A fun fact: you'll always have one more vertical riser than you have treads). With your count complete, gather your tools for success: a rigid tape measure for accurate readings, a carpenter's square to check for true 90-degree angles, a level, some masking tape for labeling, and a pencil and notebook.