Is there a minimum standard these things have to be built to?
Presumably the decking doesn't have to be 9 x 3's?
What should the siding be? In timber that is? I presume 4 X 2 is a minimum for insulation or whatever. Is there the same minimum specification? I couldn't get away with 2 x 3 could I?
Or would that blow the roof away in a decent storm?
Ditto rafters. Same impeccable frog specifications I suppose? (What size is 3 x 2 these days?)