total discharge for stack meaning

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by rcdba, Jan 10, 2013.

  1. rcdba

    rcdba New Member

    Messages:
    16
    Location:
    Brooklyn, NY
    total discharge for stack. what does this mean ? especially on a 2 inch vent. Is this the number of fixtures allowed on a vent ? does it include fixtures from floors above ? I have 3 sinks on three different levels connected to the vent. how much is too much on a 2 inch vent ? what is the effect in adding a bathroom in a basement connected to the 2 inch vent ?


    Richard
  2. Winslow

    Winslow Plumber

    Messages:
    450
    Location:
    Hawaii
    Where did the phrase (total dishcharge for stack)come from and how does it relate to a question on allowable fixture units on a 2 inch vent? According to the UPC 24 fixture units can run on a 2 inch vent with a maximum lenth of 120 ft, 40 of which can be horizontal.
  3. rcdba

    rcdba New Member

    Messages:
    16
    Location:
    Brooklyn, NY


    something i found on the internet http://www2.iccsafe.org/states/new_york/NY_Residential/PDFs/Chapter%2031.pdf on page 405
  4. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,253
    Location:
    Cave Creek, Arizona
    It means the total ficture unit (water) entering the stack. It is interesting that in section P3105 they show how to install a "legal" "S trap".
  5. rcdba

    rcdba New Member

    Messages:
    16
    Location:
    Brooklyn, NY

    Is that really a legal S trap ? or is it wrong ?
  6. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,809
    Location:
    New England
    'S' traps are never legal...
  7. Tom Sawyer

    Tom Sawyer In the Trades

    Messages:
    3,054
    Location:
    Maine
    Except for toilets
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