I'm supposed to be using the 2006 International Plumbing Code (IPC). I heard somewhere that water closets don't need cleanouts. However under the section for "Cleanouts" that fact is not mentioned. In fact, it says I must have a cleanout on every horizontal branch, no matter how short. Can anyone tell me the verses that cover the exceptions --where cleanouts are not really needed? I can't find them.
--zeb
P.S. Why are plumbers the only ones that call toilets "water closets"?