Spiker, I originally had planned on 10 ft spans, When I went to price the steel trusses, the gentleman who sells them also has a metal panel fab business with presses to roll panels and trim for metal buildings, his shop uses the same trusses on 12ft span with roughcut 2x4 /forums/images/graemlins/shocked.gif, so my first thought was wow I can go 60ft vs 50 ft and the only real cost would be the concrete. living in Alabama don't have to worry about snowload. I may very well bump the span back to 10ft just to be safe. Rambler I have thought about laminating the posts together, any suggestions on glue? and when I checked on ground contact treated 2x6 I heard this ,,long pause then "I don't think we can get those". I was concerned about not being able to use ground contact for the posts. probably will end up with 6x6, the side walls will be 10 ft, hopefully with the clear span trusses that will give enough room later for the 2 post lift that I would love to have.