Fireblock between joist at vent pipe

Some builders fireblock between joist at vent pipes. It makes perfect since to me, being that if the vent pipe did start a fire, you want to contain it the best you can.

Fire Block Between Joist at vent pipe

It makes sense to me, however I think the code book only adresses it between floors and attic space. Another thing I noticed after reviewing this picture is the I-Joist is cracked.

Cracked I Joist

 It’s funny how you see other things in the picture after the fact.