Venting multiple fixtures in a public restroom
Venting multiple fixtures in a public restroom
(OP)
Hi, I have a question. I'm working on a bathroom addition for an exposition center, and right now have a vent coming up from each toilet and each sink. But now the plumber tells me that not every fixture needs to be vented. Is that true? I guess what he's proposing is a vent only at every other toilet, (typical 3' wide stalls), or possibly further separated. If that is allowed, how far apart do the vents need to be spaced?
Thanks for your help.
Thanks for your help.





RE: Venting multiple fixtures in a public restroom
All fixtures with traps must be vented, but the method of venting does not require that each fixture have a vertical vent pipe connected to the drain pipe.
Without a diagram to see what the plumber is proposing and what code has jurisdiction - it is impossible to say one way or another.
RE: Venting multiple fixtures in a public restroom
RE: Venting multiple fixtures in a public restroom
LAV
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One other question is can the soil stack be used as the vent in this situation, or does there have to be a separate stack to act as the vent?
The code is the Ohio Plumbing Code which is pretty much the 2006 IPC I believe.
Thanks for your help.
RE: Venting multiple fixtures in a public restroom
You will probably find the answer to your combined soil stack/vent question in the attached file.
RE: Venting multiple fixtures in a public restroom
If the toilets are wall hung, the carriers will have vents. Each back to back water closet can be vented together. The lavatories would be individually vented, but could combine 6" above the flood level rim of the fixture and a single vent could rise from that.
You can bring a single stack up from the sanitary and it could act as a the vent riser.
You do not need to buy the 2009 IPC commentary yet - Ohio hasn't adopted the 2009 IPC yet. The 2006 commentary will work. I use the 2003 commentary since not a whole lot has changed in the 2006 code.
RE: Venting multiple fixtures in a public restroom