|Posted by vince on February 28, 2004 at 15:44:52:|
|In response to Re: 4" sewer main, can my vent stack be reduced to 3"?|
2 things to look at:
If in a cold weather climate, vent may be sized for that area so it doesn't freeze shut from condensation.
All vents must be calculated to equal or exceed the cross sectional size of the main leaving the building. If you have several vents along with the new 3", probably not a problem. Really depends on what code you fall under.
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