How do I vent the plumbing for my basement bathroom?

Question

I'm trying to determine how to best vent plumbing for basement bathroom I am putting in.

The nearest main stack is around the corner and kind of a mess with connections. I'm not sure I'd be able to tie into it very well.

So, I was thinking I would go out the wall, but looking at some code, I'm not sure that's an option. The wall goes out directly below a window (or just off to the side). And it also looks like the vent needs to be at least 10' above the ground?

If it was ran up the wall on the outside of the house to get that high, it'd then be below a soffit, which is also prohibited if I'm understanding correctly.

Edit:

Turns out the studor vent was acceptable at my location. It really was the only reasonable option.

Answer 1

Normally they go up inside the walls, and join somewhere above before going out the roof. The only stack you can connect to in a basement is one (such as a dry vent stack, or sink-only-stack of sufficient size for a wet vent) that does NOT have a toilet connected above. Stacks with toilets entering above are not legitimate vents under the last several decades of plumbing rules in most locations.

The other common approach, which I'm not personally fond of, is to install a mechanical vent, air admittance valve (aka Studor, a brand name of one such) - if you choose that option, be sure to install it as high as possible in the room, but accessible for easy replacement - they do fail and need replacement. (Which is why I don't like them, much.) The lower (closer to drain water, say when you are plunging a clog and sloshing it around) they are mounted the faster they fail. When they fail, they stink until you replace them.

Answer 2

Vent stack:

A vent is a dry pipe that carries no water (except for rain that may fall into the open end) and this pipe "connects" to the sky. A stack is a vertical pipe

The easiest place to find a vent stack is on the rooftop, second easiest is in the attic, if it passes through the attic to get to the rooftop.

But when you're doing basement construction neither of these places is particularly convenient, but they do give you a starting point to locate existing vent stacks.

A vent stack will usually be placed on top of a drain stack so if you want a to vent into the vent stack vent you need to connect to the stack somewhere above the fittings that use the vent stack (above the fittings themselves, not merely the point where the connect to the drain stack)

From the roof, use a weight on a string or a powerful light to look inside the vent stack to see how far it remains vertical, run some water through appliances to see how far it remains a vent stack. Be prepared to deal with a messy string and weight when you're done exploring (eg: gloves, zip-loc and scissors).

This will give you some idea about what wall you may need to cut open.