Most of the smaller wood selling places around me have bay like storage. It offers full support, so never any bend, and due to weight of the "stack" it doesn't twist at all. I copied the design most often seen, it will carry great weight, cost little to build. Well it used to, since Covid pricing any wood is expensive now. As you can see I opted to go 3, 4' x 8' bays wide, and I have 12' ceilings, so I went up a bit. Obviously you can make the racks narrower, and just a single bay of them is doable. Much of the load bears on the back wall, and a heavy duty attached bearing beam needs to be attached to a solid/sturdy wall. The legs are 2 x 12, and they need to bear on a solid floor. Concrete is best.
The downside of it is, if you want that last bottom board, well it is a great cardio vascular workout, but if you would rather be woodworking, a large PIA.
This is moved partially in, and during drywall so it's somewhat covered, but it kinda gives you an idea. Now it's so crowded in there you can sometimes catch glimpses of wood. But it's a lot more filled now, than this pic. Probably around 5,000 bd/ft anyhow.
At the place I buy a lot of wood, and they sell millions of bd/ft a week, rather than a thousand or two. They have straight walled bins, and stand up all of their stock pulled for their "Showroom" and walk in wood buying area. I have to say they move inventory, so I am not sure how long any one board may stand there, but in over 30 years of buying from them, I have never had a warped board. In their warehouse all wood is bunked, and bundled just like the huge stack of 2 x 4's at the Borgs, and they move it all around with huge forklifts. I'm not rich enough to pull that off though. Most of their serious biz is bunks of lumber, loaded straight to semis, and sent all over the world.
