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Thread: Bath + Laundry Layout Feedback

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  1. #1
    DIY Junior Member dcp143's Avatar
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    Default Bath + Laundry Layout Feedback

    Hello, I've watched the forum for quite a while and learned a lot. Anyways, this is my first post and is regarding a bathroom renovation currently underway. I am redoing a bathroom with a sink, toilet, shower, washer and dryer. Space is tight since the room is about 13' by 6'. I live in NW PA and am under the IPC. I have drawn up the floorplan of the bath and sketched a design of the plumbing and vent system. Please let me know if you see any issues with the system as shown on the attached pictures...

    Thanks,
    Darren

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  2. #2
    DIY Senior Member Fubar411's Avatar
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    Not a plumber and not very knowledgeable...
    You need 2" for that shower, unless it is a bathtub shower.
    I think the vent on the cleanout is usless, but I could be wrong.
    I think you need a 3" vent going out for all of this.

  3. #3
    DIY Junior Member dcp143's Avatar
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    Thanks Fubar411, I didn't think that vent at the downstream cleanout would be necessary but wasn't sure. So I should increase shower stall drain to 2" and stack/drain/vent past laundry to 3"?

    Is there any issue with running the vent horizontally above the ceiling out the wall since I have a relatively flat roof above with rolled roofing and could not seal under shingles?

    Any suggestions to simplify or reduce # of fittings or other comments?

  4. #4
    DIY Junior Member rusak's Avatar
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    Vents has to terminate through the roof, No exceptions

  5. #5
    DIY Junior Member dcp143's Avatar
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    I saw in the IPC (2003 version) a section describing location of vent terminal and "extension through the wall" Section 904.5 and 904.6 talking about vents through walls and the necessary distances from windows and other building features. Did I mis-interpret this section or maybe it has been revised in newer editions? Thanks

    PS there is a soil stack with vent downstream serving an upstairs bath that terminates through the roof, 3" or 4" ,cant remember...
    Last edited by dcp143; 10-28-2010 at 05:28 AM.

  6. #6
    Moderator & Master Plumber hj's Avatar
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    All the shower, and washing machine, need are 1 1/2" vents. The vent at the cleanout is cosmetic, not functional. The cleanout at the laundry would be better if it were positioned in the wall behind the washer. The size of the vent pipes exiting the roof varies according to the local codes.

  7. #7
    DIY Junior Member lane234's Avatar
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    vent thru roof no exception!! manifold system... several vents can join and go out the roof so u do not look like a porcupine roof.... saw a Bert Polk Plumbing Inspector i liked what it showed on dif plumbing aspects... trying to think mine thru... u draw good. elaine

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