I had a 20' x 30' stained and stamped concrete pad poured behind my ranch house. I want to cover it. It is 30' wide extends 20' from the house. I want to put a gable roof extending from my current roof. I will get 30' trusses with 2ft overhangs. I might have them made with a frayed or vaulted ceiling. I need help with ideas for the support columns and beams.
This is only a 3 season room. It may stay open on the three sides. No heat will be applied to this room. I am in north west ohio.