I'm getting ready to build myself a pole barn, would like to know what roof pitch I should use. I have built myself a smaller storage shed (12x16 foot) using T-111 plywood and shingle roof, that was a 4:12 pitch, but my soon-to-be built pole barn will be all metal skins, including the roof. The building I've seen from the road, looks like a shallower pitch, anybody know what this would be? 3:12, 2:12, I live in Florida and have some good rain falling.

Thanks.