Quote:
Originally Posted by intakexhaust
The thread was started from a fellow in Chicago or area. Codes vary around the country and he needs the specifics from his city or township. ......
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Many (Most?) areas of the country have adopted various versions of the IBC/IRC. Looks like areas of Illinois have, but not Chicago.
ICC - International Code Council
So, frankly I made some assumptions in prior responses, but at least around here, 'B' rated doors have been a requirement for a long time, before IBC/IRC, there were also required in BOCA and CABO codes.