Urban morphology is the study of the formation of human settlements and the process of their formation and transformation. [1] The study seeks to understand the spatial structure and character of a metropolitan area, city, town or village by examining the patterns of its component parts and the ownership or control and occupation. Typically, analysis of physical form focuses on street pattern, lot (or, in the UK, plot) pattern and building pattern, sometimes referred to collectively as urban grain. Analysis of specific settlements is usually undertaken using cartographic sources and the process of development is deduced from comparison of historic maps.
Special attention is given to how the physical form of a city changes over time and to how different cities compare to each other. Another significant part of this subfield deals with the study of the social forms which are expressed in the physical layout of a city, and, conversely, how physical form produces or reproduces various social forms.
The essence of the idea of morphology was initially expressed in the writings of the great poet and philosopher Goethe (1790). However, the term as such was first used in bioscience. Recently it is being increasingly used in geography, geology, philology and other subject areas. In geography, urban morphology as a particular field of study owes its origins to Lewis Mumford, James Vance and Sam Bass Warner. Peter Hall and Michael Batty of the UK and Serge Salat, France, are also central figures.
Urban morphology is considered as the study of urban tissue, or fabric, as a means of discerning the environmental level normally associated with urban design. Tissue comprises coherent neighborhood morphology (open spaces, building) and functions (human activity). Neighborhoods exhibit recognizable patterns in the ordering of buildings, spaces and functions (themes), variations within which nevertheless conform to an organizing set of principles. This approach challenges the common perception of unplanned environments as chaotic or vaguely organic through understanding the structures and processes embedded in urbanisation. Complexity science has provided further explanations showing how urban structures emerge from the uncoordinated action of multiple individuals in highly regular ways. [2] Amongst other things this is associated with permanent energy and material flows to maintain these structures. [3]
Urban morphology approaches human settlements as generally unconscious products that emerge over long periods, through the accrual of successive generations of building activity. This leaves traces that serve to structure subsequent building activity and provide opportunities and constraints for city-building processes, such as land subdivision, infrastructure development, or building construction. Articulating and analysing the logic of these traces is the central question of urban morphology.
Urban morphology is not generally object-centred, in that it emphasises the relationships between components of the city. To make a parallel with linguistics, the focus is placed on an active vocabulary and its syntax. There is thus a tendency to use morphological techniques to examine the ordinary, non-monumental areas of the city and to stress the process and its structures over any given state or object, therefore going beyond architecture and looking at the entire built landscape and its internal logic.
Roger Trancik discusses three major theories of urban spatial design and urban morphology which can guide analysis:
Figure and Ground theory is founded on the study of the relationship of land coverage of buildings as solid mass (figure) to open voids (ground) Each urban environment has an existing pattern of solid and voids, and figure and ground approach to spatial design is an attempt to manipulate these relationships by adding to, subtracting from, or changing the physical geometry of the pattern. The objective of these manipulations is to clarify the structure of urban space in a city or district by establishing a hierarchy of spaces of different sizes that are individually enclosed but ordered directionally in relation to each other. Linkage theory focuses on lines formed by streets, pedestrian ways, linear open spaces or other linking elements that physically connect the parts of the city. Place theory operates upon structured systems of human needs and usage. [4]
In a broad sense there are three schools of urban morphology: Italian, British, and French.
The Italian school centres around the work of Saverio Muratori and dates from the 1940s. Muratori attempted to develop an 'operational history' for the cities he studied (in particular Venice and Rome), which then provided the basis for the integration of new architectural works in the syntax of the urban tissue. Stemming from this view are contributions such as Gianfranco Caniggia's, which conceptualise the city as an organic result of a dynamic procedural typology, which see political-economic forces as shaping a built landscape already conditioned by a particular logic, set of elements, and characteristic processes.
The British school centres around the work of M.R.G. Conzen, who developed a technique called 'town-plan analysis.' The key aspects for analysis according to Conzen are:
The town plan in turn contains three complexes of plan element:
For Conzen, understanding the layering of these aspects and elements through history is the key to comprehending urban form. Followers of Conzen such as J.W.R. Whitehand have examined the ways in which such knowledge can be put to use in the management of historic and contemporary townscapes.
The French school, based principally at the Versailles School of Architecture, has generated extensive methodological knowledge for the analysis of urbanisation processes and related architectural models. Much emphasis is placed upon the importance of built space for sustaining social practices; the relationship between the built landscape and the social world is dialectical, with both shaping the other.
As an urban-industrial city, Chicago's socio-economic problems were obvious and crying out to be studied in depth. Therefore, several urban sociologists and geographers belonging to the so-called Chicago School, such as W.I. Thomas (concerned with migration), Robert E Park and Ernest Burgess, attempted to analyse the morphology of Chicago in order to solve these problems.
Burgess employed an ecological approach in placing emphasis on the relationship between organisms and their environment. He used similar biological factors used in explaining plant distribution and established a concentric-zonal theory which included a Central Business District (CBD), an area of transition (invaded by business and migrants), and area of upper class apartments and several commuter zones and suburbs on the edge of the city.
The scientist Maitri Singhai and the mathematician Nikos Salingaros have created a new school of urban morphology based on morphogenesis and emergence. In The Nature of Order Alexander proposes that urban development is a computational process similar to that of cell growth in an organism, and that the unfolding of these processes produces the urban landscape and its typologies. Some urbanists have sought to transform this theory into a practical emergent urbanism.
Morphology, from the Greek and meaning "study of shape", may refer to:
Urban design is an approach to the design of buildings and the spaces between them that focuses on specific design processes and outcomes. In addition to designing and shaping the physical features of towns, cities, and regional spaces, urban design considers 'bigger picture' issues of economic, social and environmental value and social design. The scope of a project can range from a local street or public space to an entire city and surrounding areas. Urban designers connect the fields of architecture, landscape architecture and urban planning to better organize physical space and community environments.
Space syntax is a set of theories and techniques for the analysis of spatial configurations. It was conceived by Bill Hillier, Julienne Hanson, and colleagues at The Bartlett, University College London in the late 1970s to early 1980s to develop insights into the mutually constructive relation between society and space. As space syntax has evolved, certain measures have been found to correlate with human spatial behavior, and space syntax has thus come to be used to forecast likely effects of architectural and urban space on users.
Landscape ecology is the science of studying and improving relationships between ecological processes in the environment and particular ecosystems. This is done within a variety of landscape scales, development spatial patterns, and organizational levels of research and policy. Concisely, landscape ecology can be described as the science of "landscape diversity" as the synergetic result of biodiversity and geodiversity.
Urban geography is the subdiscipline of geography that derives from a study of cities and urban processes. Urban geographers and urbanists examine various aspects of urban life and the built environment. Scholars, activists, and the public have participated in, studied, and critiqued flows of economic and natural resources, human and non-human bodies, patterns of development and infrastructure, political and institutional activities, governance, decay and renewal, and notions of socio-spatial inclusions, exclusions, and everyday life. Urban geography includes different other fields in geography such as the physical, social, and economic aspects of urban geography. The physical geography of urban environments is essential to understand why a town is placed in a specific area, and how the conditions in the environment play an important role with regards to whether or not the city successfully develops. Social geography examines societal and cultural values, diversity, and other conditions that relate to people in the cities. Economic geography is important to examine the economic and job flow within the urban population. These various aspects involved in studying urban geography are necessary to better understand the layout and planning involved in the development of urban environments worldwide.
In geometry, an isovist is the volume of space visible from a given point in space, together with a specification of the location of that point. It is a geometric concept coined by Clifford Tandy in 1967 and further refined by the architect Michael Benedikt.
Sustainable landscape architecture is a category of sustainable design concerned with the planning and design of the built and natural environments.
Nikos Angelos Salingaros is a mathematician and polymath known for his work on urban theory, architectural theory, complexity theory, and design philosophy. He has been a close collaborator of the architect Christopher Alexander, with whom Salingaros shares a harsh critical analysis of conventional modern architecture. Like Alexander, Salingaros has proposed an alternative theoretical approach to architecture and urbanism that is more adaptive to human needs and aspirations, and that combines rigorous scientific analysis with deep intuitive experience.
A site plan or a plot plan is a type of drawing used by architects, landscape architects, urban planners, and engineers which shows existing and proposed conditions for a given area, typically a parcel of land which is to be modified. Sites plan typically show buildings, roads, sidewalks and paths/trails, parking, drainage facilities, sanitary sewer lines, water lines, lighting, and landscaping and garden elements.
A figure-ground diagram is a two-dimensional map of an urban space that shows the relationship between built and unbuilt space. It is used in analysis of urban design and planning. It is akin to but not the same as a Nolli map which denotes public space both within and outside buildings and also akin to a block pattern diagram that records public and private property as simple rectangular blocks. The earliest advocates of its use were Colin Rowe and Fred Koetter.
Saverio Muratori was an Italian architect, regarded as one of the pioneers of typomorphological investigations of urban form.
Patrick Alasdair Fionn Turner (19 October 1969 – 6 October 2011) was a British-born scientist, who played a major role in the VR Centre for the Built Environment and the Space group at the University College London. His contribution had a great impact on the development of space syntax theory. This goes in parallel to his research into introducing a dynamic agent model that derives aggregate spatial analysis from the visual affordances of the built environment. Based on the principles of Turner's theory on Embodied space, his agent model proves to correlate well with natural movement behavior in architectural and urban environments. Turner was born on 19 October 1969, in London. He earned an MA in Natural Sciences from the University of Cambridge, and an MSc in Artificial Intelligence from the University of Edinburgh. Turner was last appointed a reader in Urban and Architectural Computing at the University College London in 2011. Turner died on 6 October 2011 after a long struggle with stomach cancer.
Settlement geography is a branch of human geography that investigates the Earth's surface's part settled by humans. According to the United Nations' Vancouver Declaration on Human Settlements (1976), "human settlements means the totality of the human community – whether city, town or village – with all the social, material, organizational, spiritual and cultural elements that sustain it."
Integrated modification methodology (IMM) is a procedure encompassing an open set of scientific techniques for morphologically analyzing the built environment in a multiscale manner and evaluating its performance in actual states or under specific design scenarios.
'Negative Approach to Urban Planning', also known as "reversed planning" or simply "negative planning" is a landscape urbanism approach to urban planning. It is a new concept and terminology introduced by Chinese landscape architect, Professor of Peking University YU Kongjian. Yu argued that among other issues, the degrading environmental and ecological situations, low performance scrambled city form, and the loss of cultural identity in Beijing have proved that the conventional "population projection-urban infrastructure-land use" approach and the architectural urbanism approach to urban growth planning failed to meet the challenges of swift urbanisation and sustainability issues in China in general, and Beijing in particular. The negative approach defines an urban growth and urban form based on Ecological Infrastructure (EI). This approach has evolved from the pre-scientific model of Feng-shui as the sacred landscape setting for human settlement, the nineteenth century notion of greenways as urban recreational infrastructure, the early twentieth century idea of green belts as urban form makers, and the late twentieth century notion of ecological networks and EI as a biological preservation framework. EI is composed of critical landscape elements and structure that are strategically identified as Landscape Security Patterns to safeguard natural assets and ecosystems services, essential for sustaining human society. EI is strategically planned and developed using less land but more efficiently preserving the Ecosystem service. It distinguishes itself from other theories as it is practical way of solving urban and rural planning problems in quickly developing regions.
Michael Robert Günter Conzen was a geographer, founder of the Anglo-German school of urban morphology. Conzen's most influential work is a detailed morphological study of the English market town of Alnwick. His work is noted among others for the micro-scale study of the evolution of plots.
Urban planning, also known as town planning, city planning, regional planning, or rural planning in specific contexts, is a technical and political process that is focused on the development and design of land use and the built environment, including air, water, and the infrastructure passing into and out of urban areas, such as transportation, communications, and distribution networks, and their accessibility. Traditionally, urban planning followed a top-down approach in master planning the physical layout of human settlements. The primary concern was the public welfare, which included considerations of efficiency, sanitation, protection and use of the environment, as well as effects of the master plans on the social and economic activities. Over time, urban planning has adopted a focus on the social and environmental bottom lines that focus on planning as a tool to improve the health and well-being of people, maintaining sustainability standards. Sustainable development was added as one of the main goals of all planning endeavors in the late 20th century when the detrimental economic and the environmental impacts of the previous models of planning had become apparent. Similarly, in the early 21st century, Jane Jacobs's writings on legal and political perspectives to emphasize the interests of residents, businesses and communities effectively influenced urban planners to take into broader consideration of resident experiences and needs while planning.
Morphology in architecture is the study of the evolution of form within the built environment. Often used in reference to a particular vernacular language of building, this concept describes changes in the formal syntax of buildings and cities as their relationship to people evolves and changes. Often morphology describes processes, such as in the evolution of a design concept from first conception to production, but can also be understood as the categorical study in the change of buildings and their use from a historical perspective. Similar to genres of music, morphology concertizes 'movements' and arrives at definitions of architectural 'styles' or typologies. Paradoxically morphology can also be understood to be the qualities of a built space which are style-less or irreducible in quality.
Building typology refers to building and documenting buildings according to their essential characteristics. In architectural discourse, typological classification tends to focus on building function (use), building form, or architectural style. A functional typology collects buildings into groups such as houses, hospitals, schools, shopping centers, etc. A formal typology groups buildings according to their shape, scale, and site placement, etc. Lastly, a stylistic typology borrows from art history and identifies building types by their expressive traits, e.g. Doric, Ionic, Corinthian, baroque, rococo, gothic, arts and crafts, international, post-modern, etc.
Finding Lost Space: Theories of Urban Design is an architecture book by Roger Trancik, an educator and practitioner of urban design. The book has been translated into "simple" as well as "orthodox" Chinese translations. This book introduces the theory, vocabulary and issues of urban spatial design. It identifies and introduces the issue of ‘Lost Spaces’ that had emerged in the cities with the modern urban development and growth. The book was intended primarily for designers and students of the city. The book includes theoretical and critical discussion along with practical applications and strategies for correcting the problems of spatial structure.