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pmg 09-14-2008 09:25 PM

Basement rough-in too close to outside wall
My house is 5 years old and we had believed the builder put in a 2 piece bathroom rough-in in the basement. We never looked closely until today when we started taking measurements in order to start basment finishing. Well big problem, the 3" waste pipe for the toilet is only 4" from the outside wall! It should be 12" from everything I read.
Has anyone heard of something like this? Do we have any options other than breaking up the concrete in order to move it over that far?

James Con 09-14-2008 10:15 PM

How about taking a picture and posting it. That sounds like a pretty bad error on the plumbers part. They actually have special order backsets for toilets like 10" instead of 12" which still won't help you but FYI. You can't even do an offset closet flange because they are only 2 inch offsets and you will have to raise the concrete to use one. I guess what I'm trying to say is bust up the concrete and do it right. You can rent a small jackhammer (Chipping gun) from the local rental place. But take a picture and post it here before you start busting concrete so we see exactly what your talking about.

Termite 09-14-2008 10:48 PM

That's either a bad mistake on the builder's part or the pipe you're looking at is a cleanout or a backflow device and not a water closet drain. As James Con suggested, posting a picture would really help.

KHouse75 09-14-2008 10:57 PM

You could try a rear discharge toilet like an Ifo Cera or Microphor Microflush or even a wall mount unit. You'd probably have to frame the wall out some so the pipe is inside the wall.

I would break up the concrete and move it to where it needs to go. It would be cheaper that route. The special order toilets are expensive.

pmg 09-15-2008 06:59 AM

2 Attachment(s)
Thanks for all the replies. Okay, here is a picture.

James Con 09-15-2008 03:53 PM

If the distance from the concrete wall to the center of the 3" pipe is 12" then he didn't allow for the 2x4 wall. I would remove the studded wall and see how close you can get to your 12 inch backset. You should put a treated bottom plate anyway. Maybe you could use 2x3's pushed back closer to the concrete wall with a ten inch backset toilet. You would have to put a ruler on it and figure it out to see if it will work.

pmg 09-15-2008 04:09 PM

Unfortunately it is only 10" from the concrete wall to the centre. Looks like moving it is the only option.

James Con 09-15-2008 10:37 PM

1 Attachment(s)
Yeh, Your better off digging it up and putting the pipe in the right spot. Just keep in mind when you are chopping concrete the existing waste line could be going toward the right or left on an angle to meet up with the sink drain or vise-versa.( see pic). If you take the cap off the 3" waste line and look down the pipe you could see which way the elbow is pointing then chop accordingly. Also when you lay the new pipe make sure you keep the 1/4 inch slope per foot, otherwise the terds will not exit the building. After your done chopping post the pics.

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