As part of remodeling my kitchen I had to redo plumbing on the second
floor bathroom that is just above the kitchen. I was pretty confident
in my plumbing skills and knowledge as I did a bug plumbing project in
my house before. I plumbed full basement bath including underslab
plumbing, installed sewage ejector pump, stand pipe, utility sink. All
work was inspected multiple times and except few issues that I had to
correct everything was fine. Now a new inspector in my township came to
check my new kitchen and upstairs plumbing. He rejected my work due to
several problems to his view:

1. He said my house must have 1 3" vent and two 2" vents. I thought
that vent size is determined by number of fixture units it vents. I
have two 2" vents and that is more then adequate for my house with 2
1/2 bath. Can someone point me to the place in NPC where it states that
house must have these number of vents.

2. He insisted toilet must have a wet vent instead of dry went that I
put. Why does toilet must have wet vent and why dry vent is no good?

3. He insisted that rubber Fernco couplings that I used to connect new
PVC DWV with old copper plumbing are prohibited despite I used them in
my basement and previous inspector approved them .I also cannot
understand if Fernco couplings are prohibited why any HD sells them?