total discharge for stack meaning

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rcdba

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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 ?


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Winslow

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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.
 

rcdba

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rcdba

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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".


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