Basement Bathroom Plumbing

[stealth]

So I am developing my basement and was wondering do I need a sewage ejector for my toilet, or can I just install it right on the larger pipe (I assume this is the toilet pipe).

Also I notice the sink and shower drain are just piped in to the ground, without breaking up the concrete to see where they tie in, can I just get a plumber to connect into those connections?

Any help is appreciated.

[imranm]

Unless your house is OLD everything is tied into the main stack so you don't need to worry about that.

The only thing that I don't see that you would need for code is a vent stack which needs to be attached to the sink and bathtub.

Not a plumber - I just developed my basement.

[ExtraSlow]

Breaking up the concrete isn't that big of a hassle.

[stealth]

imranm the house was built in 2011. The vent stack would have to be tied into an existing line, correct?

ExtraSlow, ya I have broken up concrete before, just don't want to go through it if I don't need to.

[imranm]

That's right - into an existing line. Here is what my rough in looks like. The vertical stack was existing with an elbow at the bottom to hookup the sink drain.

2011 - for sure its already tied into an existing line.

[ganesh]

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imranm the house was built in 2011. The vent stack would have to be tied into an existing line, correct?

ExtraSlow, ya I have broken up concrete before, just don't want to go through it if I don't need to.

You need to break the concrete anyway because the drainage won't have the P Trap. You need to have that in order to pass the inspection.

[mr2mike]

Or scope it to verify it doesn't have a P-trap but most likely doesn't. I don't get why people pay for rough in plumbing on new builds!?

[stealth]

This was a spec home so it came with it already. I rather have made my own and determine the locations.

Good idea on snaking the line.

Another question, the cap for the toilet drain was missing when we bough the home, how come there is no "shitty smell" or anything like that coming out, check valve perhaps? Sorry for my lack of knowledge I am not a plumber by any means.

[Darell_n]

Yes, a backflow valve. If you have any plastic cover plates in the floor nearby, this is where you should find one. (they are serviceable)

[stealth]

Yes I have one towards the end of the house and that is where the backflow valve is. But I would expect the other shitter pipes in the house to tie in upstream of that valve and potentially cause a stink?

[Darell_n]

My roughed in basement was on a backflow, I don’t think the main run had one. Easy enough to check just pop it open and if it’s clean then there’s your answer. Dump some water at the rough in and watch it come out to verify. A trap in the floor will also hold several inches of water so you can look down the large pipe after you dump in water, to verify.

[stealth]

Would a studor vent negate the need of connecting in the sink to a vent pipe?

[Darell_n]

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Would a studor vent negate the need of connecting in the sink to a vent pipe?

I’m not sure what the code in Calgary is in regards to a cheater vent, but it’s common on commercial jobs and I think maybe necessary for a kitchen island sink.

[imranm]

I also put in a wet bar when I developed my basement. Talked to the city inspector about the studor vent. He basically said unless there was absolutely no way of getting the venting to the original stack they wouldn't approve it's use.

For the p trap it's normally never built into the rough in plumbing. For the sink you simply install the p trap between the sink drain and the drain pipe.

If you don't have a shitty smell that's because your venting is working properly.

Again not a plumber but I've developed more than enough basements!