I've been looking at small pole building engineering. It appears that if you use poles set at 8' apart or greater, you need to use a truss built roof rather than common rafters. I'm looking at buildings & IRC codes that indicate you can go as wide as 12' between poles. But everything I read says "Truss" built roofs when post are at 8'+. I'm thinking of a barn 18' x 24'. I wanted to use 8' spacing over 6x6 poles. But I do not want to use trusses. So now I'm looking at 6' spacing. Has anyone done a barn around the size I'm thinking about using 8' between poles with a common rafter roof build.
I hope my question is understandable.