As I mentioned in the first thread, I got a permit from the City of Chicago myself. The permit simply states...
Description of permitted work:
Remove existing frame garage and replace it with a new 27x22x15 max ht. metal frame (structural metal studs with 2 layers of 5/8 gypsum board at each side of the stud) garage with 3sqft of roof vent.
Description of permitted work:
Remove existing frame garage and replace it with a new 27x22x15 max ht. metal frame (structural metal studs with 2 layers of 5/8 gypsum board at each side of the stud) garage with 3sqft of roof vent.

