Offsets of stack and vent
Offsets of stack and vent
(OP)
What's design guide for offsets of stack and vent in domestic plumbing system? The house is only three-story. IPC has sections only for offsets of five stories or more.
Thanks in advance!
Thanks in advance!





RE: Offsets of stack and vent
RE: Offsets of stack and vent
Vt = 3.0 (q/d)^(2/5) and
Lt = 0.05(Vt)^2
Where Vt is terminal water velocity (fps), and Lt is the developed length to develop terminal velocity (ft). From these formulae it was determined for various standard pipe sizes terminal velocity is about 10-15 fps, and that this velocity is achieved within 10-15 feet of fall.
What this means is that the velocity of falling 'water' is about the same regardless if it is falling 2-3 stories, or 100 stories.