Architecture, Building and Planning - Theses
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ItemNo Preview AvailableA data-driven investigation on urban form evolution: Methodological and empirical support for unravelling the relation between urban form and spatial dynamics( 2023-06)Investigating the patterns of urban development and transformation and unravelling the principles behind these processes are critical for understanding how cities evolve under different physical conditions. While socio-economic, political and cultural forces undeniably shape the patterns of spatial change and persistence, urban form should not be perceived as a passive resultant or a mere consequence of these processes. Quite the contrary, urban form plays a determinant role in establishing the spatial conditions that influence future development patterns by constraining some choices while facilitating others. Recognising the scarcity of systematic, diachronic and quantitative studies on urban form evolution, this thesis is driven by an interest in understanding the relationship between urban form and spatial change. It aims to develop theoretical, methodological and empirical support for unravelling the influential role of urban form in guiding spatial dynamics. The thesis develops a diachronic and quantitative methodological framework to investigate how urban form conditions created by plots, buildings, streets and land uses affect the patterns of change and persistence in three different grid cities: Midtown Manhattan, New York (US); City Centre, Melbourne (AUS); and Eixample, Barcelona (Spain). As part of the research, three longitudinal morphological datasets were generated, drawing upon a rich array of historical cartographic resources and geospatial databases to enable a comprehensive assessment of urban form evolution within each city between the 1800s and 2000s. Through quantitative analysis of urban form and its association with spatial dynamics, the thesis demonstrates that urban form conditions have a measurable impact on the patterns of physical and functional change. This understanding contributes further to the fact that design does not exclude the possibility of change but may even favour it under particular conditions. A rigorous and evidence-based understanding of the interplay between urban form conditions and patterns of spatial change empowers practitioners and policymakers to choose particular forms and structures over others, guide the long-term evolution of urban form and improve the adaptive capacity and resilience of the built environment.
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ItemDesiring Karail: Morphogenesis of an informal settlement in Dhaka( 2021)Informal settlements currently house more than a billion people and will house a billion more by 2030. They are pervasive, expanding and persistent. Some of them have slum conditions while others do not. Often described as ‘spontaneous’ or ‘autonomous’, they are produced without the explicit urban design mechanism of the state. The changes in urban form in these places suggest the existence of particular processes of design and production. Understanding such processes underlying the morphogenesis—the development of urban form—is the central inquiry of this research. Moreover, the research aims to articulate the dynamic forces that enable or constrain the production processes. To do so, the thesis investigates Karail, which has emerged as the largest informal settlement in Dhaka over the last 40 years. Spread over an area of about 35 hectares, it is a dense agglomeration with a population of more than 250,000. Even without state planning and maintenance, functioning neighbourhoods with a characteristic urban form has emerged. The question is how. Employing a mixed-method research framework, which included multi-scalar mapping, in-depth observation and oral histories of placemaking, the thesis has interrogated the morphogenesis by tracing morphological change, informal rules used and the agents involved. It analysed the underlying forces—the desires—shaping the urban processes. Assemblage thinking, derived from the work of Deleuze and Guattari has been used to produce narratives of Karail’s informal morphogenesis in terms of the urban form, its uses and the control of the urban production. Beyond the notion of ‘self-organization’, the concluding analysis pointed towards heterogeneous formative processes—a mix of individualised, collectivised and syndicated forms of organization. The concomitant entanglements of power between the State, NGOs, the surrounding formal neighbourhoods and the residents were of different orientations as well, often in alignment and in contradiction with each other. The thesis shows how the urban morphogenesis under investigation in Karail works as a sociospatial assembling held together by different desires, themselves appearing from within a landscape of narratives, capacities and imaginaries. It ends with a speculative impact of the findings on policy-making, upgrading and management of existing informal settlements and the episteme of urban design for future cities.
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ItemTransit and urbanity in Tehran( 2017)A key response to the challenges of car-dependency and urban sprawl has been to build dense, functionally mixed and walkable urban areas around existing and new transit stations – broadly defined as Transit-oriented development (TOD). While the concept of TOD has been extensively researched in Western cities, less formal and more congested cities lack empirical investigation, particularly in the ways TODs work in relation to micro-scale morphology, urbanity, informality and gender issues. This research explores the case study of Tehran to investigate synergies between urban morphology, transport modes and streetlife around five major transit nodes. It examines the ways that different modes of transport variously mesh or compete for the same networks and spaces. The study explores the relations of informal to formal transport and discusses on the prospects for formalisation. It documents the advantages that motorcycles have within this urban assemblage - capacities to slip through congested traffic and narrow streets and between different spatial networks. It also explores the ways that gender-based rules both constrain women's use of public transport and keep the system informal. Using comparative mappings of urban density, functional mix, streetlife, transport access and interfaces, the thesis explores both existing synergies between such properties and possibilities for urban design transformation.