Sustainable cities: The relationships between urban built forms and density indicators

Ahmadian, Ehsan and Sodagar, Behzad and Mills, Glen and Byrd, Hugh and Bingham, Chris and Zolotas, Argyrios (2019) Sustainable cities: The relationships between urban built forms and density indicators. Cities . ISSN 0264-2751

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Sustainable cities: The relationships between urban built forms and density indicators
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Abstract

The paper introduces a novel indicator of urban built form termed Form Signature. Generic models of four urban built forms are developed, including pavilion, terrace, court and a newly introduced tunnel-court is used to compare and contrast their land-use performance and density characteristics. Selecting plot ratio and site coverage as the most popular and appropriate density indicators, the simultaneous relationship to each of the considered urban built forms is shown graphically with the number of storeys, plan depth and cut-off angle as the main variables of interest. For existing urban areas, the resulting graphs provide a robust tool for statistical analysis of contexts such as climate, economy, energy and crime potential and establish their relationship to form and density. To show the value of the contribution, analysing 32 case studies from 19 cities in different global locations showed an insignificant relationship between climate and form/density of urban areas, whilst practically depicting that urban areas built in court form acquire higher cut-off angle compared to terrace form urban developments. For planning the future urban areas, the resulting relationships provide application-oriented urban planning tool to facilitate the most effective land-use method in order to achieve sustainable cities. Examples showing the potential of the tool for future statistical energy and social analysis of urban areas are provided. Finally, a relative comparison shows that the newly-introduced tunnel-court form achieves the greatest density while pavilion achieves the lowest.

Keywords:urban built form, density indicators, land-use, urban planning, sustainable cities
Subjects:K Architecture, Building and Planning > K200 Building
K Architecture, Building and Planning > K440 Urban studies
K Architecture, Building and Planning > K421 Urban Planning
K Architecture, Building and Planning > K400 Planning (Urban, Rural and Regional)
Divisions:College of Arts > School of Architecture & Design > School of Architecture & Design (Architecture)
College of Science > School of Engineering
ID Code:36148
Deposited On:17 Jun 2019 10:54

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