Fire Rated Door code in IL.

[Tomas Satas]

What's up everybody!

I got into a big argument with an inspector today and need your help...

Does anybody know the codes for fire rated doors in a 2 flat??

This inspector told me that I need fire rated doors at the top and bottom of a staircase that goes from the 1st level to the basement family room of a duplex.

The 1st floor of the 2 flat is a duplex with a private staircase down to the family room.

Any advice would be much appreciated.

Thanks in advance.