Hello, I'd love to get some feedback on this diagram. I'm building a half bath in an enclosed porch. The main soil stack is about 15 feet away in the basement so I figured I had to add a new vent. 1)Does the diagram look right? 2) The room is on the first story and extends away from the house. Does the vent line have to extend all the way to the 2nd story roof or can it just terminate above the 1st story? Thanks for your help!