UPC Trap to Vent Distance (TUB)

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PlumbingSocal

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I’m trying to figure out the proper trap to vent distance on a tub for UPC. The code book is a bit confusing.

FOR 1.5” trap
FOR 2” trap

From what I understand IPC is 6’ for 1.5” and 8’ for 2” trap, not sure about UPC.
 

SHEPLMBR

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I always thought it was 2 and a half time the diameter. But I could be wrong. Or that might be the IPC. I could be wrong all together.
 

breplum

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I did it from memory (in trade since 1975).
3" is 6' 0"
UPC Table 10-1 Horizontal Distance of Trap Arms (Except for water closets) (which is always 6' even for 4")
 

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