Drain pipes take the wastewater to the soil stack.
Wet vent floor drain.
True vents also have no water running through them.
I am wondering if i can cut and reroute this upstairs sink drain down the basement wall and under the floor using 2 inch abs and tying the basement shower into it as wet vent drain before it ties into main drain.
This is best implemented if a fixture rests close to the stack and the top floor of your home allowing the stack to serve as a vent.
But i think that your inspector says that plumbing vent tee connections like those i show in our illustration are installed upside down so that water down a wet.
Use the chart below as a reference guide.
This is the purpose of a venting system.
Through the stack sewer gases are carried up to the roof through vent lines.
As water goes down a drain air is needed to equalize the pressure in the drain line.
All the faucets and water appliances in a house use this same system of drains pipes and vents.
A plumbing tee is a drain pipe connection that joins a horizontal well sloped 1 4 per foot but roughly horizontal drain or vent pipe to the vertical vent or wet vent drain pipe.
The true vent is aligned vertically and attaches to your drain line through the roof.
For a wet vent the vent should enter the drain line at a minimum of a 45 degree angle.
J the wet vented portion is not reduced in size except for the portion that is upstream of floor drains in accordance with clauses 7 5 1 1 3 a to c k the highest fixtureis connected to a vertical portion of the wet vent upstream of any other fixtures in the form of a continuous vent and l the length of the wet vent is not limited.
The wet vent shall be considered the vent for the fixtures and shall extend from the connection of the dry vent along the direction of the flow in the drain pipe to the most downstream fixture drain connection to the horizontal branch drain.
The size of your pipes will determine how much of a hydraulic load it can handle.
The 3rd wet vent example given in your wet venting discussion is exactly the layout except that the wet vent sink drain.
The same holds true for plumbing vent pipe.
Any combination of fixtures within two bathroom groups located on the same floor level is permitted to be vented by a horizontal wet vent.