total discharge for stack meaning

[rcdba]

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

 

[Winslow]

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.

 

[Sponsor]

 

[rcdba]

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_york/NY_Residential/PDFs/Chapter%2031.pdf on page 405

 

[hj]

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".

 

[rcdba]

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 ?

 

[Jadnashua]

'S' traps are never legal...

 

[Tom Sawyer]

Except for toilets