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Thread: Toilet move

  1. #1
    DIY Junior Member reefmkr's Avatar
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    Default Toilet move

    I'm remodeling my master bath and trying to relocate toilet about 4-5 ft, can you look at my drawing and tell me if i'm doing it right?
    this would be on second floor, and garage under the bathroom.
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    Retired Defense Industry Engineer jadnashua's Avatar
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    If I understand things correctly, and that's not a certainty, I do not think this will work properly. You can wet vent a toilet, but you can't wet vent the shower from a toilet. Water rushing by the trap on the shower from the toilet could cause it to suck the trap dry. Since the toilet's trap is higher and internal, you can run water past it without affecting it, but not the other way around. See if the pros agree I've got this right...
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    DIY Junior Member reefmkr's Avatar
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    Oh~~~ that make since. would be better to run separate pipe to main stack?
    btw distance between toilet and elbow would be around 5 ft and elbow to main would be 2 ft..

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    Retired Defense Industry Engineer jadnashua's Avatar
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    Before you make any changes, wait for one of the pros to verify I'm not all wet! Happens, not often, but it happens...I learn from the experience, too.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  5. #5

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    What's that blue line that says 2" vent to main stack" ? Don't think you need that.
    You could possibly wye into the toilet line where it takes a hard left turn. Run your shower drain parallel to the toilet drain then vent it vertically where it passes under the wall.

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    Moderator & Master Plumber hj's Avatar
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    quote; Since the toilet's trap is higher and internal, you can run water past it without affecting it

    That is NOT the reason you cannot run the toilet past the shower drain. The reason is that the VELOCITY, and volume, of water flowing past that connection can produce a venturi effect and pull the water out of the trap. The SAME thing can happen to a toilet if the conditions are right, and it would make no difference WHERE the toilet's trap was. You also CANNOT connect the tub below the toilet's connection in the vertical pipe, without its own vent, for the same reason.
    Licensed residential and commercial plumber

  7. #7
    DIY Junior Member reefmkr's Avatar
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    thanks everyone for explain...

    Thank you JM66208 for picture, i'll run my pipes just like in picture..

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