Trap under tub?

Discussion in 'General Plumbing Help' started by bggas400, Dec 5, 2012.

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  1. Dec 5, 2012 #1

    bggas400

    bggas400

    bggas400

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    Hi all...

    I'm putting in a new tub and Looking at the plumbing below, there's a trap. Now I have to move the plumbing in 4 or 5 inches because of the configuration of the new tub. Now do I need a trap under my tub? The line Going up is the vent pipe.

    Thanks,
    Barry

    image-3946964109.jpg
     
  2. Dec 5, 2012 #2

    johnjh2o

    johnjh2o

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    If you don't have a trap sewer gas will enter your home through the tub drain. That is the main reason for a trap. Many people mistakenly think there to catch objects that go down the drain.

    John
     
  3. Dec 5, 2012 #3

    bggas400

    bggas400

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    Yeah that's what I figured. Someone had told me that they had never seen a trap below a tub but everything I've read says that there should be, which makes sense.
     
  4. Dec 6, 2012 #4

    jdc

    jdc

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    Whoever told you that has no knowledge of plumbing. All fixtures are trapped. Either there is an integrated trap built into the fixture (water closet, urinal, etc) or a trap is installed when the fixture is (sinks, showers, tubs, mop basins, etc).
     
  5. Dec 6, 2012 #5

    johnjh2o

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    That's the reason for this forum. to help people that don't have knowledge of plumbing. I'm sure he could teach us a thing or two about his line of work. To each his own.

    John
     
  6. Dec 6, 2012 #6

    stevemachine

    stevemachine

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    Yeah agreed. Just cause we think its so simple doesn't mean everyone knows all about plumbing. When I started I didn't understand why there were p traps I just knew they were a part of the drain lol. Everyone has there thing like John said.
     
  7. Dec 6, 2012 #7

    jdc

    jdc

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    Wow...didnt realize I'd get "corrected" for pointing out the obvious; that this guy's aquaintance had no idea what he was talking about. I thought I was rather polite, but I suppose I could have sugar coated it a bit. Sorry about that johnjh2o. Perhaps I'd better just stick to the other forums I'm a member of. Good day
     
  8. Dec 6, 2012 #8

    johnjh2o

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    I wasn't correcting you, what you said about every fixture having a trap is correct. Sorry you took it the wrong way.

    John
     
  9. Dec 7, 2012 #9

    bggas400

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    One more question on this please... Do I need to move that trap exactly Underneath where the new tub drain is going? I have a new Kohler tub and the drain hole is some 4 inches further out and a couple inches to the right As you can see in the picture.
    So I was curious if I could come down with the drainpipe a few inches, then 90 degree with an elbow and over to the trap. will that work?
     
  10. Dec 7, 2012 #10

    johnjh2o

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    The tub drain needs to go directly into the trap. If not you a creating a running trap which is no legal.

    John
     
  11. Dec 7, 2012 #11

    stevemachine

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    In my jurisdiction you can do an offset into the trap, but I've done a 45 offset not a 90. Cause I've ran into the exact same problem you are having. But yeah I guess it depends on local codes
     
    Last edited: Dec 7, 2012
  12. Dec 8, 2012 #12

    phishfood

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    I don't want to be quoted, but I think that you can do up to a 24" offset from the fixture drain to the trap inlet under IPC.

    If I get really ambitious, I will look it up and reference the code. Don't hold your breath.
     
  13. Dec 8, 2012 #13

    stevemachine

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    That sounds about right to me phish. I know you can offset it but I don't remember an exact number.
     
  14. Dec 8, 2012 #14

    bggas400

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    Thanks for the info guys. Offsetting is an easier way to go but I just might move it to where it should be.
     
  15. Dec 8, 2012 #15

    phishfood

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    If it were my tub, that would be my first choice.
     
  16. Dec 8, 2012 #16

    bggas400

    bggas400

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    Yep... Now to find a drain kit to fit my 20" Kohler without paying through the nose.
     

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