This is probably a dumb question, but I thought I'd make sure before doing a bunch of extra work... There's a dry vent line that goes from the bottom of my slab in my basement up through the roof (2 story house including basement). It services a sink on the upstairs floor. Because of this, it can't have any horizontal whatsoever below that sink (ie, the basement ceiling), correct? Because it's below the flood line of that sink?
I ask because 1) there's a lav in the downstairs that vents to that pipe too, but it runs horizontally before it joins it, which I'm assuming was ok when the house was built 70 years ago but is not today? (So I have to fix that.) 2) If I could tie into that vent for other basement fixtures it would save me running a new vent.
Thanks!
I ask because 1) there's a lav in the downstairs that vents to that pipe too, but it runs horizontally before it joins it, which I'm assuming was ok when the house was built 70 years ago but is not today? (So I have to fix that.) 2) If I could tie into that vent for other basement fixtures it would save me running a new vent.
Thanks!