I'm thinking about finishing up my basement, but not sure where to get access to the vent stack.

After looking through the basement, I found this capped pipe (2" or 2 1/4") sticking out from the basement ceiling, does this look like the "Future Vent" that I should tap into for basement venting? If so, can I directly connect my basement toilet vent line to this pipe?

Judging by location, this pipe seems to come down from wall between my kitchen and first floor bathroom.

Thanks in advance for any suggestions.

It appears to be a future vent. When roughing in a house with a basement we would always leave a future vent, in many areas in Ohio it was a code requirement. My answer would be yes, use it.

Thanks a lot for answering. I'm a newbie to plumbing.

Do I need to cut the cap and tie this "Future Vent" into the soil stack (a few feet above basement floor), and then tie the toilet/sink vents at a higher point of this future vent line (a few feet above the connection of soil stack and future vent)?

Please see attached simple sketch. I'm planning to use upflush toilets like saniflo, The leftest vetical line is the discharge line from marcerating pump. Any suggestions would be appreciated.

BTW, I forgot to mention this is in Illinois. And the house was built in 1995, I'm guessing by then a lot of houses are already putting in "Future" vents?

Looks like a dedicated vent line for a sewer lift pump. To you have a pit or stub out in the basement?

No pit or stub. This basement doesn't have basement bath rough in.

You said "no rough in " but you have a toilet . How does it vent and drain now?

No rough in, no existing toilet in basement. I'm planning to finish the basement with a bathroom, so was sketching the plumbing diagram.

Hi Lucaslc

So you are planning on installing a saniflo toilet and a sink (1/2 bath) or are you including a tub/shower as well?

Either way, with the saniflo system you will want to tie the plumbing vents and the saniflo system vent together (at a minimum of 42" off the floor) and then connect the 2" vent to the future vent (or pit vent) you showed us.

When you attempt to cut the cap off I would suggest drilling a hole in the cap and draining the pipe into a bucket as it should have some nasty rain water in it.

Back to you...

Mark

Mark,
Thanks for the answer. That seems to be exactly what saniplus's manual shows.

Here's what confuses me:
If the future vent does have rain water, do I need to connect the future vent to the soil stack and then connect the bathroom vents to the future vent? You can see my previous post's attached txt file for my sketch.

Or is it possible the so called "future" vent is simply a stud that extends from the first floor plumbing vent? If that's the case, I should still be able to use it, but it's not directly leading up to the roof so shouldn't have rain water issue, right?

Thanks.

Hi Lucas

In most states, you will NOT need to connect that future vent to the plumbing stack... just run as a 2" vent to the new bathroom group.

In terms of the rainwater, the future vent should have some rainwater in it as all vents have fittings that are installed upside down and directed in such a manner as to direct water flow (rain water) from the roof to the drains in the basement.

If you hook this vent to the sink drain (and saniflo pump) then the rain water that will naturally flow will just flow into the sink drain and into the saniflo pump.

Mark

Mark,

Thanks a lot for the clarification, it clears my head now!

Pop back anytime!