Plans? Who needs 'em! Well it turns out I do. The beams went together into a fine 9 foot x 9 foot L-shaped structure, but they were too long to attach properly to the top of the rack. So I had to do some additional measurements and it's back to the drawing board, literally. Apparently simulating a 9x 9 "L" shape out of 8'x8' wood that was lying around was not an accurate mockup.