Smoke barrier 

Let’s stick with the smoke barrier discussion from yesterday.  A smoke barrier could be a floor or a wall. That means that if your project has a horizontal smoke barrier someone should be looking at your firestop submittals and ensuring that the penetrations through that floor have an L rating.  

That means you have to do the same thing for any through penetrations, membrane penetrations into or through your smoke barrier as well as any joints connecting the smoke barrier. 

If you are doing this on your project I would love to hear from you. If you aren’t checking this and you have questions, I’d love to hear from you as well.