Water and sewer line need a horizontal separation of (5) five feet. Where. crossings are necessary, encase the sewer line with a continuous ductile iron pipe. of sufficient length, located such that a minimum (5) five feet separation exists. between each end of the casing pipe and the water line.
The difference has to do with cultural norms. The term 'culture' refers to attitudes and patterns of behavior in a given group. 'Norm' refers to attitudes and behaviors that are considered normal, typical or average within that group.
Culture refers to the behavioral traits that make up boundaries for socially acceptable behaviors in any society. Culture is the total of beliefs, values, and practices that are common in any population or society. For example, people kiss one another as a form of greeting when they meet in the Western world whereas kissing may be seen as unacceptable behavior in the eastern part of the world.