On Thu, 12 Jun 2008 17:53:50 +0000, Wayne Whitney wrote:

On 2008-06-12, franz fripplfrappl wrote:

Already checked: vent cannot be smaller than 1/2 of pipe. A 2" works
just fine with the 3" system.

There is also typically a requirement that the aggregate vent size be at
least as large as the building sewer (main drain). Or sometimes there
is the stronger requirement that at least one vent is as large as the
building sewer. Just FYI.

Cheers, Wayne

Thanks. Already ran this past the building inspector and I'm fine with a
2" vent through roof.



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Franz Fripplfrappl