Marshall, S; Sutton, M; (1991) Explorations in generative street layout design. In: Carmona, M, (ed.) Explorations in Urban Design An Urban Design Research Primer. Routledge: Abingdon, UK.

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Abstract

The chapter explores the possibilities for generating urban layout structure based on street networks. This provides a demonstration of a network simulation tool – ‘NetStoat’ – which ‘grows’ layout structure according to a set of street-based rules. By controlling different street types and their relationships, we can generate urban layout in a structured way, but without a fixed plan. The chapter explores what urban layouts could arise, given different input parameters, testing a range of urban street network types, such as ‘traditional’, ‘hierarchical’ and ‘neo-traditional’, based on different combinations of rules of connection and frontage constraint. Sample results demonstrated include metrics of network length and the emergence of ‘high street spines’. The exploration provides insights into the structure and dynamics of layouts arising, pointing towards future application of street-based rules for generating urban layout.

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