Over venting

Willie Two · Oct 11, 2011

Hi to all, a great forum this really is. I am planning my new plumbing/ drain installation. I want everything to be well vented. It is two back to back 3 piece bathrooms. Is it possible to have too much venting ??? Sorry if it is a dumb question. Thanks

hj · Oct 11, 2011

It is NOT possible to "overvent", although if you DO do it and use "vents" which are merely cosmetic, there is a very good possibility that you could "undervent" some areas, because it would mean you are completely clueless when it comes to vents. A vertical pipe connected to a drain line is NOT necessarily a vent.

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Tom Sawyer · Oct 11, 2011

Under the IPC, two bath groups can be vented from a single 1-1/2 vent

Willie Two · Oct 12, 2011

Canada just can't be that simple, it would put too many code writers out of work ............

hj · Oct 13, 2011

Not necessarily. If it is like the IPC, they have to rewrite it every time someone comes up with a "shortcut" to save additional money on their plumbing jobs.

Willie Two · Oct 14, 2011

I'll do a drawing over the weekend............

Over venting

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