The new location is not practical to reach either of the two waste stacks. My intent is go through the floor into the main, as I would with a basement toilet.
My concern is with the venting. By taping into the main (horizontal) I am not geting the benefit of venting that taping into a stack (vertical) would give.
I can't see any way of adding venting other than going into the basement ceiling, than across into an existing stack. would this work ? is it required ?? is there an better way ??
The location is about 12 away from each of the exisiting stacks, and directly over the main.