Iam trying to understand codes. Im looking to build a pole building to commercial code for a woodworking shop. Total sqft 2640. i was told if one area is 2500 sqft in one space i would need sprinklers. So he said i could split an area and put a fire wall up or adjust building size. Luckly a 15x40 section is for truck parking and other storage spaces/office. So it would put me well under my 2500sqft max. What iam wondering is what the wall needs to be made of to get the correct fire rating. Original was 2x6 separating walls with 5/8 drywall both sides all the way to roof. Also can i have doors with a fire rating? I also had plans to add a few high windows to let light threw from garage area. Is that possible? Thanks