Re: Minimum vent, waste line size for 2nd floor Bathroom?
Posted by Marty on June 25, 19100 at 16:46:47:
In response to Re: Minimum vent, waste line size for 2nd floor Bathroom?
You may want to check the local plumbing codes with you municipal plumbing department first, but since codes have been revised over the years, I don't see why this line cannot be reduced down to 3" pipe. This existing line is probably the main stack to the house and I would think you could reduce no further than 3". But again, check local codes first. Marty


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