Before you even pick up a piece of wood, take a look at what you need to store and where you plan to put the shelves. This will help you determine the exact dimensions of your new shelving unit. You can calculate how much wood you'll need following these simple rules:
- The top and bottom sections should be the same length.
- The two sides should be the same length.
- Each shelf should be 1.5" shorter than the top and bottom pieces.
Remember, these shelves are going in your utility areas. Looks are not that important—sturdiness is. Keep that in mind when you're starting.