dwv sizing

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by anton, Dec 12, 2013.

  1. anton

    anton New Member

    Messages:
    6
    Location:
    Massachusetts
    i'm installing a half bath...toilet & vanity....the vanity will be 1-1/4" to a 1-1/2' waste line...vented to the soil line vent.....can the toilet be a 3" flange/line to a 3" soil line and a 3" vent line....or is the toilet always a 4" flange and line........can the vent be 2"..... also a kitchen sink vent...can it be 1-1/2" or is 2" a minimum?

    I live in massachusetts.
    Last edited by a moderator: Dec 12, 2013
  2. Tom Sawyer

    Tom Sawyer In the Trades

    Messages:
    3,311
    Location:
    Maine
    Need to know what code you are under.
  3. anton

    anton New Member

    Messages:
    6
    Location:
    Massachusetts
    upc....is it less restrictive than the international pc?
    Last edited: Dec 12, 2013
  4. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,258
    Location:
    Cave Creek, Arizona
    quote; upc....is it less restrictive than the international pc?

    You[ve got to be kidding. The IPC is a "do whatever you want to" code. They cancelled their merger with the UPC when they discovered what they would have to do under the UPC.
  5. Tom Sawyer

    Tom Sawyer In the Trades

    Messages:
    3,311
    Location:
    Maine
    You live in mass. They have their own code. It's closer to the old BOCA code than anything else. At any rate, you need to hire a plumber. Mass won't allow you to do your own plumbing.
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