Hi Jeff I built a 12X16, but did it out of my head...don't think I wrote anything down so can't help you there. But a suggestion: Build it with a gambrel roof and construct your trusses on the floor deck right after you sheath it. That way you can measure, draw and put down stop blocks to make a form so you can build all trusses at once. This will save you much time. The gambrel provides great storage for long skinny things as well as a nice high place to hang things. Very handy.