Derek, Thanks for the reply. You're right about that!
I guess I'm just looking for structural wisdom on this thing.
I'm new at this type of building and I'm trying to decide if I should regroup now and turn the purlins on edge.
It's engineered to be 3x6 purlins at 18" oc for our 40#psf snow load here in Colorado. That's a lot of purlins and it seems like it should be fine but my construction buddies are questioning it. It's probably just that it goes against what we've been used to in stick built roofs that's buugging me about this. But like I said I like the way it looks finished. Thanks.Ron