Plumbing venting on sidewall

[free07110]

Have 3 wet vents in my barndo I need to vent. Really don’t want to go thru the roof. Could I run pipe thru the attic area and vent thru sidewall. 9ft ceiling and building is 12ft tall. In the county so no inspections but trying to make sure it’s will work and is acceptable. I’m the diy plumber.

 

[manwithtools]

Have 3 wet vents in my barndo I need to vent. Really don’t want to go thru the roof. Could I run pipe thru the attic area and vent thru sidewall. 9ft ceiling and building is 12ft tall. In the county so no inspections but trying to make sure it’s will work and is acceptable. I’m the diy plumber.

I've been wondering the same thing as I have a situation very similar to yours. Here's the best info I've found so far. It appears to be allowed under the IPC. Also, you could use an Air Admittance Valve to provide venting if code allows that in your area.

It's allowed as long as:

• Not directly below a door, openable window, or other air intake opening (of this or any other building).
• Not within 10 feet horizontally of the above mentioned openings, unless it's 3 feet above them.
• Not less than 10 feet from the property line.
• Not less than 10 feet above the ground.
• Not under the soffit, if soffit vents are used (Covered by point 1 in my opinion).
• Must be protected from birds and/or rodents blocking it.

International Plumbing Code 2012​

Chapter 9 Vents​

Section 903 Vent Terminals​

903.5 Location of vent terminal.
An open vent terminal from a drainage system shall not be located directly beneath any door, openable window, or other air intake opening of the building or of an adjacent building, and any such vent terminal shall not be within 10 feet (3048 mm) horizontally of such an opening unless it is 3 feet (914 mm) or more above the top of such opening.
903.6 Extension through the wall.
Vent terminals extending through the wall shall terminate at a point not less than 10 feet (3048 mm) from a lot line and not less than 10 feet (3048 mm) above average ground level. Vent terminals shall not terminate under the overhang of a structure with soffit vents. Side wall vent terminals shall be protected to prevent birds or rodents from entering or blocking the vent opening.

And don't forget, if required you have to protect any extensions from freezing.

903.7 Extension outside a structure.
In climates where the 97.5-percent value for outside design temperature is less than 0°F (-18°C), vent pipes installed on the exterior of the structure shall be protected against freezing by insulation, heat or both.

Here is a link to the table with outside design temperatures: https://codes.iccsafe.org/content/IPC2018/appendix-d-degree-day-and-design-temperatures

It looks like Edmond, OK are has a 13 degree design temperature, so no insulation or heating of the vent is required.

I'd be interested if others have a different opinion on this subject.

 

[manwithtools]

Bumping this thread as I would like to know if anyone has any counterpoints to my interpretation of the IPC as outlined in post #2? I'm seriously interested in this subject. I'd prefer not to penetrate my metal roof.

 

[Grimm_the_Grey]

Duplicate

 

[Grimm_the_Grey]

I've been wondering the same thing as I have a situation very similar to yours. Here's the best info I've found so far. It appears to be allowed under the IPC. Also, you could use an Air Admittance Valve to provide venting if code allows that in your area...


...I'd be interested if others have a different opinion on this subject.

According to codes in the United States, to use an AAV, you must have a minimum of one vent extending to open air. This is primarily to relieve positive pressures, which an AAV cannot do.
(A PAPA can address the positive pressure issue, but honestly I'm not sure how well that would work in a single dwelling... One vent open to free air still required anyways)

Free07110, you have three wet vents?

 

[Prospecter]

Venting through the wall has been around for a long time, particularly for old and brick houses.

 

[gahrajmahal]

Even if you go through the wall I’d make it go above roof level. Those sewer gasses are toxic.

 

[beltfeed]

If some of the people, I work with stopped by to use your bathroom you would need a vent stack like this.