This is clever, storage shelving that hinge-opens to more storage shelving hidden behind. When you don't have more horizontal or vertical space this is so much better than deep shelves that you have to dig through.
Lumber storage: "My rack is 2x4s floor-to-ceiling and 1/2" plywood for the arms that hold the the wood. I was a little skeptical of the strength of this design, but I got a free rack when I bought a trailer-load of lumber a few years back that was constructed this way. I changed it around a bit to match my available space...and ended up with what you see on my site, here:..."