In the end, I decided on a common method for hanging cabinets- the french cleat. This allows for flexibility in how the shelves are configured. I then combined this method of shelving within a frame, to create the overall bookcase.

I drew up the plans in Autodesk Inventor (basically a 3-D version of the popular AutoCAD software package)

The dividers below each shelf are more than just dividers- they also function as the main support for the shelf. As you can see in the pictures, I did 3 “versions” of the same shelf. (Divider centered, divider left, and divider right) Note that you could also put a divider on top for additional flexibility. The different shelf versions can be mixed in many different ways to get the space configuration you want. (Maximum of 2 shelves per cleat) There are a total of 5 cleats to hold the shelves. I have the overall dimensions at 72” high, 42” wide, and 13.25” deep. (Shelves are 9” deep)

Given the height (6’) and potential uneven weight distribution, it would probably be a good idea to anchor the unit to the wall at the top. (I’ve seen bookshelves from IKEA use simple nylon straps)

The plans use standard dimensioned lumber (3/4” thick) The back panel and bottom panel call for 3/4” plywood, for strength. I’d probably use biscuits for joining the frame components. The panels could also be joined to the frame with biscuits and/or wood screws.

Thanks for checking out my entry, I really enjoyed participating in this challenge!

.ZIP file of (4) .DXF drawings can be found here.