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Thread: total discharge for stack meaning

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    DIY Junior Member rcdba's Avatar
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    Default total discharge for stack meaning

    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

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    Plumber Winslow's Avatar
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    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.

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    DIY Junior Member rcdba's Avatar
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    Quote Originally Posted by Winslow View Post
    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.


    something i found on the internet http://www2.iccsafe.org/states/new_y...apter%2031.pdf on page 405

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    Moderator & Master Plumber hj's Avatar
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    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".
    Licensed residential and commercial plumber

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    DIY Junior Member rcdba's Avatar
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    Quote Originally Posted by hj View Post
    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".

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

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    Retired Defense Industry Engineer jadnashua's Avatar
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    'S' traps are never legal...
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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    In the Trades Tom Sawyer's Avatar
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    Except for toilets
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

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