Anyone know any good sites for barn plans? I am trying to design a small, 2 stall barn with a feedroom. I have a 22X22 ft shelter with a concrete floor and a roof- that's it. It was used for RV storage but the RV is going. My husband is a carpenter and I have been trying to describe how I would like it to be, but I don't know some details like how wide the aisle should be, etc.