Urban structure

This zone represents people who choose to live in residential suburbs and take a daily commute into the CBD to work.

Burgess claimed that Chicago's central business district was surrounded by a series of rings, broken only by Lake Michigan.

Hoyt argued that the best housing developed north from the central business district along Lake Michigan, while industry located along major rail lines and roads to the south, southwest, and northwest.

Geographers Chauncy Harris and Edward Ullman developed the multiple nuclei model in 1945.

Incompatible activities will avoid clustering in the same area, explaining why heavy industry and high-income housing rarely exist in the same neighbourhood.