Basement tub drain, p-trap angle

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redwillow420

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I have a basement tub drain that is incorrect and looking for suggestions to fix without much jackhammering. The inspector said I should have the tub drain down pipe connect directly into the p-trap then p-trap to horizontal drain pipe. I'm trying to limit how much I have to jackhammer out if possible so could I have the p-trap at the base of the down pipe, have it go flow to the left in the picture then 180 bend back into the existing drain?

drain.jpg
 

John Gayewski

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It looks to me like your going to have to remove that bottom plate for the wall and jackhammer some more concrete.

Your ptrap should act as a 90 since your tub sitting is 90 degrees from the direction of the drain piping. So you glue your trap outlet onto the drain pipe. Then the u bend will be rotated 90 degrees (give or take, it may end up not quite 90 or a little more depending on where you cut the pipe). Once you are rotated the riser can be offset with 45 degree fittings if there's room, but it doesn't look like there's room, so where you cut the horizontal drain pipe will be critical.

What you have now is considered a running trap and generally not allowed.
 

redwillow420

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It looks to me like your going to have to remove that bottom plate for the wall and jackhammer some more concrete.

Your ptrap should act as a 90 since your tub sitting is 90 degrees from the direction of the drain piping. So you glue your trap outlet onto the drain pipe. Then the u bend will be rotated 90 degrees (give or take, it may end up not quite 90 or a little more depending on where you cut the pipe). Once you are rotated the riser can be offset with 45 degree fittings if there's room, but it doesn't look like there's room, so where you cut the horizontal drain pipe will be critical.

What you have now is considered a running trap and generally not allowed.
Thanks John for the feedback! I was nervous about cutting away too much of the horizontal drain pipe but yeah that what it looks like I'm gonna have to do. Thanks again!
 

Jeff H Young

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BTW only solid joints should be under tub without access the slip joints should be avoided over glue joints unless you have access
 
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