城市系统的保持过程是通过限制了共同在场，实现文化模式的稳定性，并不断地再生。这一般与城市的住居地区有关。
保持过程
Sources
Hillier, B. & Netto, V. (2002), Society seen through the prism of space: outline of a theory of society and space, Urban Design International 7, 181-203. pp. 182;
Hillier, B. (1996, 2007), Space is the Machine: A Configurational Theory of Architecture. Space Syntax: London, UK. pp. 201