| Ok... I talked with an inspector for STL county today and got some answers.
1. 3" is fine and I can switch mid-stream as long as I switch prior to going through the floor/ceiling assembly, but I need to remain with b vent all the way out.
2. On the firestop, it's not required, but it will make it easier to determine spacing, support the weight, and stop drafts.
3. No clearance is required w/ the PVC.
4. And it looks like if I terminate the intake elsewhere I'm good on the exhaust vent clearances as well.
BTW. I think I've found another wall that makes some of my problems go away!
Thanks for the input... guess I'll have some nice expense code books coming in the mail!!! |