So I went to the regional building district yesterday to pull permits for the basement finish. What a pain in the ass. They are only open 5 1/2 hours a day, 30 minutes across town. Anyway, I got kind of a shock talking to the "Mechanical" representative. It was kind of funny; I have a BS in Mechanical Engineering, and I'm guessing this guy did not. I had to help him with his math a few times. But anyway, he informed me that I need to supply combustion air to my furnace now that I am taking 208 square feet out of the combustion air volume. He showed me several options, but the best one is going to be-
I need to run a duct from outside to the furnace to supply combustion air, since my basement will not be large enough to provide combustion air for both the furnace and the water heater. If I had not installed any doors in the room, I would have been fine. He wanted me to undercut my doors, I told him no way was that possible.
So he helped me with my HVAC plan. Here's what is going to be required to pass the Mechanical inspection:
1) Means of providing more combustion air to the furnace. This could either be a duct from the outside to the furnace, or an 18x18 transfer grille in my stairway.
2) Return air somewhere in the basement, hopefully close to the theater room walls.
3) Method of air transfer from the theater room to the return air space. This can be accomplished however I want to do it. Dead vent or similar would suffice.
He did say that intake air into the theater room is not required in any way, although I am free to do so if I wish. Said the window completely fills that requirement; although for about 4 months out of the year, that wouldn't be useful at all.
Besides that they didn't have any issues with my plans and quickly approved all the other aspects. I have 179 days to schedule my first inspection, and framing is of course 95% finished.
Side note: It's funny how so many people said they would help me work on my basement, but when I actually start the project, they aren't really interested anymore. Out of everyone, I think my neighbor and my friend that lives 120 miles away are going to be the only ones to help.
+$309.75 Permits and Inspection fees
+170.20 6 Gallons of Valspar Signature Eggshell paint
[current projection is over budget ]
Edited by djkest - 6/13/13 at 7:07am