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Thread: What do you think? Lav and Shower waste and vents

  1. #1
    DIY Junior Member akantler's Avatar
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    Default What do you think? Lav and Shower waste and vents

    Okay...I've been impressed at all the helpful information on this forum. My husband and I are DIYers and are building our own home. It's a timber frame which makes plumbing a real pain with all the beams in the way. This is our first floor bathroom. The vent and drain line are running horizontal to our vertical plumbing chase that extends all three stories. Nothing is put together yet, we want feedback. We are sure if we have the right fittings in the right places...(I am aware that the drain has a break in it right now too)

    Any suggestions... things that must be changed. We are in Anchorage and have found some difficulty finding local code rules.




  2. #2
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    I'm not a big fan of the double san tee on the lav drain because if you have to snake the drain through the sink the cable has a tendency to shoot right across instead of going down.

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    Plumbing Contractor for 49 years johnjh2o1's Avatar
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    Is that shower drain 1-1/2"? The vent can be 1-1/2" but the drain must be 2".

    John

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    DIY Junior Member akantler's Avatar
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    Quote Originally Posted by Peter Griffin View Post
    I'm not a big fan of the double san tee on the lav drain because if you have to snake the drain through the sink the cable has a tendency to shoot right across instead of going down.
    Is there a different fitting, or are you a fan of different overall setup?

    The shower drain and vent are 2"

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    Forum Admin, Expert Plumber Terry's Avatar
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    You would normally use a fixture cross between two lavs, not a double santee.
    The trap arms can be 1.5"
    The p-traps will be 1.5" anyway.

    UPC now requires a combo on the shower vent.
    Years ago, they let you use a santee for the vent there.

    Last edited by Terry; 01-27-2010 at 01:07 PM.

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    DIY Member Marty53's Avatar
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    What about putting a cleanout right below the fixture cross. Thats how I setup my master bath, as per a pixture terry had up of a similar setup.

  7. #7
    DIY Junior Member akantler's Avatar
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    Terry, where else does code enforce a combo be used for venting? Thanks...Jill
    Last edited by Terry; 01-27-2010 at 05:30 PM.

  8. #8
    Forum Admin, Expert Plumber Terry's Avatar
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    I think a call to the permit center is in order to find out what code you are under.
    I just gave a call to my plumbing supplier in Anchorage, but they didn't know either.

  9. #9
    In the Trades Akpsdvan's Avatar
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    If you are with in the city limits, the city should be able to help out, if out side of the city limits... then you could use them as a guide.

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