My name is John and I'm adding a 20' by 30' free-standing carport next to my portable garage. I am looking to get some advice on the build.
The plan is to have the flat roof span 20 feet wide and 30 feet long. I am planning on using corrugated metal roof panels and leaving the inside unfinished. I don't care if there are plenty of supports on the outer edges, but I would like to leave the inside open and without support beams. I am unsure on what pitch I need, but I have plenty of slope in my yard to work with this. I live in Kansas City, and we do get a decent amount of wind and snow.
Would this rating sound about right: Rafters - 30 psf live, 10 psf dead sound about right?
Any suggestions for lumber size for the frame and posts? I'm open to using engineered wood also.
THANK YOU! I need to get my Volkswagen buses covered before the winter.
The carport would be located on the side with the window and door.