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    engineerane's Avatar
    engineerane Posts: 1, Reputation: 1
    New Member
    		  
    #1

    May 18, 2008, 12:41 AM
    Vent pipe sizing in plumbing
    Dear member,

    Please advise me with vent pipe sizing for different plumbing services.

    Regards
    engineerane
    Clough's Avatar
    Clough Posts: 26,677, Reputation: 1649
    Uber Member
    		  
    #2

    May 18, 2008, 01:11 AM
    One site that might have some helpful information for concerning this would be the following site. Drainage sizing and more about plumbing

    The following search is also something that you might want to try.

    Plumbing Vent Pipe Size - Google Search
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #3

    May 18, 2008, 06:08 AM
    Clough has a great site there that should help with any questions you have.

    A quick list is as follows:

    Toilet... 3 or 4" waste, 2"vent
    Tub... 1.5" waste, 1.5" vent
    Shower... 2" waste, 1.5" vent
    Kitchen sink... 1.5" waste, 1.5" vent (although most of us are now running 2" waste to kitchen sink).
    Bathroom sink... 1.5" waste to kitchen sink).
    bathroom sink...1.5" vent
    Washing machine... 2" vent
    washing machine...2" vent
    Floor drain... 2" vent
    Floor drain...2" vent

    As a minimum, can actually run 1.25" pipe for kitchen sink and bathroom sink vents, etc... but it is never done in the field because just means buying extra fittings and pipes you just don't need.

    Can also run a wet vent for entire bathroom if waste is piped correctly... that wet vent needs to be 2" vent

    As a minimum, can actually run 1.25" or larger vent pipe in the house.

    Check out clough's links.. good pics. (some outdated info. Here, too.. but generally very good info.).

    Hope that helps a little more... ;) Have good day... MARK

    .
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