About to close up the last wall on the kitchen remodel and have a question. Does the kitchen sink, by code, have to be vented if my trap is within 4' of the 4" stack? I'm dealing with 3 options here. 1. The original set up, stack in wall at the corner. The vent line running out the wall just under the window(inside the base cabinet) and 90* down to the t & trap then through the floor looping back to the stack in the cellar. This does not put me 6" above flood rim but it worked and that's how it was. My least favorite option because I'll have to engineer the line through the base. Old cabinets were custom. I'll be going off the shelf. 2. AAV or 3. If applicable, no vent.
Thanks
Thanks