A plumbing inspector failed me because I plumbed the job according to the Code book. Really, that’s what happened. It seems that there are three sets of rules by which we plumb in the Memphis area: (1) the Code book, (2) the “Blue Pages,” which are Shelby County’s amendments to the Code, and (3) an unwritten body of rules I’ll call “We’ve never allowed that.”
An inspector came to my job, looked at a certain joint, and said “You can’t use a 90 there; you have to use a long sweep.” That surprised me, so I got out the Plumbing Code and showed him the pertinent paragraph and asked “What does this mean right here?” (The book specifically said that I was correct.) He was surprised by what he saw, but he repeated “We’ve never allowed that.”
I decided to call the office where the top Code guys sit. “Mr. ____ tells me I cannot use a 90 to change from vertical to horizontal.” The Code official answered “We’ve never allowed that.” I protested “But the book says it’s legal.” All he could say was “Well, we’ve never allowed that.”
So I crawled under the house, cut out the 90, and replaced it with a long sweep. Nobody ever said the world was fair.