Roof Posts Span Question.
I am going to extend the roof of an existing building. I want to use 2 inch steel pipe as posts and I was wondering what length of span between posts. The shade roof will be tucked in under the existing roof. I will use the corrugated panels which are common around the country. One side of the building will have a 2 meter overhang extension, while another side will have a shade extension of 4 meters. I will be using the C type of metal on top of the posts, and also to latch the roof panels onto.