Years ago we were doing several bakery additions, which were all basically the same, but each needed its own permit. After doing several of them I went in to get a permit for the next one. The drawing was rejected because of venting, so I asked them HOW I should do it. They said, "see that guy over there? He will show you how it's done", so I went over there. When I explained the problem he proceeded to draw a system with ALL underfloor vents from the floor drains. I told him, "You cannot run vents like that", and he explained that you CAN do it according to the "new code". I took the drawing to the permit desk and the rejected it. They asked, "Who drew this", and I said the guy over there, so they said have HIM issue the permit. I did and since we had already installed the system according to the 'old code", but the revisions would be minor, so I told him, "Send the inspector over". We make the revisions, the inspector came and REJECTED the installation because of the flat underfloor vents. I showed him the drawing from his OWN department. He then called his supervisor and told him, "We have this installation with flat vents under the floor. He has a drawing dated this morning drawn and approved by our department". The supervisor said, "Have the person who issued the permit, approve the installation". I told the inspector, "As soon as you walk out the door, concrete is going into the floor, so give me the green tag". He did, we poured the concrete, and 30 minutes later the inspector was back and said, "As of this minute, we are back on the old code". Six months later we were doing another job and the same inspector showed up. He said, "Aren't you the same guy who did the bakery a few months ago?" When I said yes, he said could you make a drawing of the drain system because ALL of the paperwork for that job has disappeared.