Air Admittance Value
Hello, I live in Norfolk Virginia and they use 2006 IPC.
I have a kitchen sink that I plan to move to the other side of the kitchen and put it under a window. The new sink will be about 6 feet away from the main stack in the house and very difficult to vent without busting up the wall and ceiling.
I believe I have 2 options of venting the sink/dishwasher under the code but am not sure.
1.) After the 2" p-trap I will go straight down through the floor into the crawlspace, convert the 2" line to a 4" and tie it into the main stack.
2.) I can install an air admittance valve on the 2" line right after the p trap and will go straight down through the floor to the crawl space and use a 2" line to tie into the main stack.
Does anyone have an idea of if either of these options would be okay under the code in Norfolk, VA?
Thank you for your help!!!!