just use the 3" to the roof? I am doing a new full bathroom. i have the sink vented to a 3" roof vent, i have a toilet, shower, and bathtub connected to a 3" drain pipe and vented with a 3" pipe to roof. Do i need to vent the shower and bathtub individually and connected them to the 3" vent or...
Do the actions of individuals effect the environment as a whole? I am interested to see many opinions on this, because I don't really know about it. As an example: Do people who drive big trucks really screw over the environtment, or what?