-Plans? You don't need no stinkin' plans! Here's mine - depending on your ceiling height it can be accessible from both ends and eat up 4x4 feet of floor space (all one line)

http://www.wood-workers.com/users/charlieb/PlyStorage.html

(my ceiling was at 7'11" so I had to go into the attic.)

-If you don't have space for side access plywood storage, there is a decent plan for a front access storage unit in Wood Magazine's special edition "best-ever Workshops". It is on newstands now. It also has the plans for the Cyclone DC that was published in an earlier issue.

-Don't know if this is what you had in mind, but it stores sheet goods and cutoffs.

From ShopNotes #55, Volume 10 http://www.backissuestore.com/backissuesstore/sn055.html