Floors

You are basically going to build two mini floors for this project. The top floor need to be built as shown above.

The bottom floor you can skip the center joists (minimal weight on bottom shelf)

Use glue and 3″ self tapping screws to build the framing. You can also use pocket holes if you have a Kreg Jig, on the 1-1/2" setting with 2-1/2" pocket hole screws.