Our RV garage is a pole-type, 60' deep, 40' wide, with useable 14' high X 20' wide sliding door, 6" concrete floor, and a loft opposite the RV side. You may get a lot of ideas from this website:http://www.ag.ndsu.edu/extension-aben/buildingplans/
None of the building plans directly address an RV garage, since this website is dedicated to farm buildings, however It was great for ideas when I built our RV garage.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy