Today we build a standard shed roof over the West entrance to the Memphis Applegate shop. The roof is 20x10, with 9 rafters, 5 posts, 7 2x4 stringers and 7 3x10 sheets of vinyl coated steel roofing. Putting the steel roofing on took 300 screws. Lots of work if working alone, so if you build one of these get a friend to help.