Hi there I have a question about 2 4" pipes coming out of basement slab... one is raised and on is flush... both ate capped and connect directly to street... I'm prettty sure raised one is clanot but not sure about other... both emmit strong gas when caps removed?

Yes, one should be cleanout and the other toilet.

Wow thanks for the quick answer... I'm sure this is a dumb question but are there any options to add a sink and toilet to this scenario without breaking slab

I'd think that with a toilet drain roughed in you should also have a 1 1/2" or 1 1/4" drain for the sink coming out of the wall near it. Do you see anything like that?

And of course for both, you need supply lines, which won't involve busting up concrete.

No nothing else there 100 year old house but newer slab... I ran supply lines when I finished basement just wondering what my options were for that room... wasted space right now and no bathroom in basement... room is at front near street actually under front porch so no venting either

Adding drain lines for a sink will be tricky at best and require busting up concrete at worst. Speedball, or resident plumbing expert, out of be along soon; we can both learn something when he "pipes in" :p .

Well thanks very much for your replies

Wow thanks for the quick answer ....I'm sure this is a dumb question but are there any options to add a sink and toilet to this scenario without breaking slab

Hi Kelly,

You're already roughed in for a toilet and unless there's a underslab rough in for a sink and vent you will have to break cement to connect to the main. You do realize that you'll have to vent the toilet don't you? Look around for the pipe sticking out of the wall as Rick suggested. If there is one then the sink and the vent connection for both sink and toilet's already there.
Good luck, Tom

No other pipes there that's why I couldn't figure out why the two 4" pipes in the floor don't understand what they were thinking of doing in there?

OK Kelly,

If you're serious about adding a sink and a toilet to your basement let's look at the way you can do it without tearing up your basement floor. First I need to know how far the 4" pipes set off the front wall. The one closest to a foot off the wall will be for the toilet, where is the other one located? That's the one I would attach a wye on and make the branch a cleanout and reduce the top end down to 2" to pick up the sink. You realize that doing it this way will expose the drain line from the sink don't you? Having pointed that out you can come off the top of the tee with a 2" DWV street ell and arm over to a 2" tee on it's back. From the branch of the tee you will install a AAV cheater vent and from the end a 2 X 1 1/2" elbo and 1 1/2" stubout toi pick up the sink. You may now place a flange for the toilet and complete your addition. Good luck, Tom

Thanks for the quick reply wow very inpressed with this board... the cleanout is about 10 to 12 inches further in from toilet pipe... unfortunately right in middle of room... maybe best thing to do is break floor and do it right I guess I'm lucky the sewer drain is right there so it won't be a huge job?

Thanks for the quick reply wow very inpressed with this board.....the cleanout is about 10 to 12 inches futher in from toilet pipe....unfortunately right in middle of room.....maybe best thing to do is break floor and do it right i guess im lucky the sewer drain is right there so it wont be a huge job?

There is another option open to you besides breaking up the floor. You could put down walls. Even make a double wall to hide the pipes from the sink. Since I don't know where the pipes are located in relationship to a outside wall I can't advise you on the feasibility of building a room. Cheers, tom