I've been looking at homes lately, and I'll actually be seeing one this evening for a second time.
The house in question has a nice size detached garage, around 30' x 60', and is wood construction with concrete floor. From what I saw last, the ~ 30' trusses were spaced 4' on center, but with purlins laid flat spaced maybe 2' apart. There appears to be OSB over the purlins, and the roof is asphalt shingles.
I've not been able to find a definitive answer on this, but I thought a shingle roof generally called for 2' on center trusses, especially considering snow load slightly north like we are. I've seen where 4' on center is fine for a lighter metal roof, so just trying to see if I have a problem here. Am I making something out of nothing, especially considering it was built in 93 and has stood just fine since then?
Thanks