Changing Bathroom Rough-in

jonhayden

Hi,

I need to make some slight changes to the existing basement rough-in. The hallway outside the bathroom is to narrow to support the bathtub that the finished floor plan shows. So I'm going to make it a shower instead in order to keep a wider hallway. And I also want to move the toilet since the sump pump doesn't exist as seen in the original layout. In the image below, the piping on the left is how I think it's currently laid out from some pictures I took before the concrete was poured. So I want to break up the concete and move it a little bit. Is there anything illegal about the additional piping and turns it takes (as seen in red)?

Thanks,
Jon

oh'mike

Please add your vents to the drawing-----

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jonhayden

I'm using an AAV (allowed by code here in Colorado). It will come off the sink. They actually have one sitting on the sink rough-in pipe coming out of the ground right now.

Here's a picture:

joeplumber85

Aside from the AAV, your "new set up" would pass codes up here (assuming pipe sizes are correct).

jonhayden

Thanks for the input. I think they're 3" and 2 1/2" pipes that exist right now. I'll just continue the same size that is being used since they already passed the initial inspection.

Thanks again,

Jon

DannyT

you would need a vent on the line to the toilet.

jonhayden

Can't a single large AAV support all the units?

ddawg16

I've always been told...."You can never have too much vent"....

You should see the vents I have on my house....

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jonhayden

So if I want to add a vent to the toilet, where do I put it? Do I just extend the pipe past the toilet by using a T connection or something like that? A combo tee/wye type connection?

oh'mike

That would work--2" vent is required--within 5 feet of the fixture---the closer the better for a toilet.

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jonhayden

Thanks! I was planning on a 3" vent for the toilet since the pipe is 3".

best handyman

Why did you tell him that you can vent the water closet like? Don't you have to bring the vent off before the fixture. So you will put a wye on a 45 degree angle then the 90 for the water closet? what he said come a cross and but a tee and bring the vent off the back where can you do that.

jonhayden

You're saying I CAN'T have a vent after the toilet?

Can someone else chime in since I'm getting conflicting answers now?

Thanks!

TheEplumber

vents should come off above the center line of the trap arm it's serving.
If it was me- I'd vent it at the wall as it passes under it near the door

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jaydevries

depending on what code some codes say a toilet does not need venting
as long as sink is a 2 inch up to where water goes into pipe it would pass where i live

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