"Suppose I worked on the 110th floor of the Sears Tower. Nature has reminded me it's time to relieve myself of last evening's supper. Now, I can't imagine the pileup of poop that would splatter all over the Wacker Drive sewer system if the stuff went straight down the tube. Do they have some kind of diversionary piping system, or does it indeed drop 1,450 feet to street level?"

The answer. Thanks, Straight Dope!