I have a dry vent that is going to be connected after my shower. The remaining bathroom fixtures are downstream so this intersection is the beginning of a wet vent. The vanity also has a dry vent that connects between the two sinks. The old plumbing (before I tore it out) used a sanitary tee on...

Near the end of my 12" round sheet-metal trunk line, I have two 6" round sheet-metal side take-offs, both of which immediately have 90 degree elbows. This is the supply for the bonus room over the garage. I would like to convert these side take-offs to a 12x6x6 pant tee wye attached to the...