An enquiry into new methodologies for evaluating sustainable urban form

An enquiry into new methodologies for evaluating sustainable urban form

urban form, flows, sustainable development, atmosphere, ambience, urban morphology, urban metabolism

The motivation for this research is a perceived gap in knowledge regarding the complex relationships between the physical form of the urban environment; its environmental performance as expressed through stocks and flows of materials and energy (urban metabolism); and its experienced physical and psychological qualities (urban ambience). The objective is to develop a practical methodological structure which, through investigating the relationships between these domains, may help inform the evaluation, design and development of more sustainable human settlements. One expression of this apparent knowledge gap is the ambiguity around the classification of urban form and identification of a suitable taxonomic framework to support analysis. Urban morphological research and practice is critically reviewed to derive a rigorous definition of the “urban structural unit” (USU) to facilitate the subdivision and description of urban form across spatial scales. Application of this construct to a study site in Sydney, Australia provides the basis for subsequent exploration. Investigation of theoretical and applied perspectives on urban ecology, metabolism and design enables distillation of a utilitarian set of structural, functional and ambience properties of the USU. A variety of quantitative methods pertinent to evaluation of these properties is systematically examined to derive a streamlined analytical methodology, integrating hemispherical image analysis, space syntax, isovist and material accounting methods within the USU framework. The efficacy of this methodological “toolkit” is tested in the final, empirical stage of the research, focussing mainly on the campus of the University of New South Wales. Determination of a range of material, microclimatic, ecosystemic, fractal, syntactic and isovist metrics provides a preliminary quantitative description of the campus USU in terms of its interrelated metabolic and ambience properties. This is further explained and interpreted through multivariate statistical analysis. The results suggest that the USU represents a robust framework for urban evaluation, and application of a relatively parsimonious suite of analytical methods enables a useful initial examination of the relations between significant aspects of urban form, metabolism and ambience. The outcomes of such an evaluation can directly inform built environment practice from a sustainability perspective, and also highlight areas for more detailed investigation.

Osmond, Paul William Hughes

University of New South Wales - Sydney (Australie)

2009

Samuels, Rob. Supervisor

en

Thesis

http://handle.unsw.edu.au/1959.4/42119

http://lallier.msh-vdl.fr/theses/items/show/969

http://lallier.msh-vdl.fr/theses/archive/files/4a7d38ae45bae67cf2357c36b61c19ed.jpg