Category Archives: Sustainability

Building a Smart City modelling team

Integrated Urban Model

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Cities planning their future are increasingly turning to the production of Integrated Urban Models. These are tools that bring together various datasets on different asoects of urban performance, from the behaviour of people to the flows of energy, water and other utilities. The aim is to better predict the future of cities by better understanding how they are currently working.

This is a nascent but rapidly developing field in which knowledge is emerging and evolving at a pace. Given the complexity of cities it is a good idea to involve many specialists in different subjects, led by an Urban Modelling Advisory Panel (UrbanMAP).   Continue reading

From cities of movement to places of transaction

Summary of Tim Stonor’s talk at the World Cities Summit, Singapore, 3rd June 2014

From cities of movement to places of transaction – a new mobility focus for city leaders, planners and everyday users

Key responsibilities for cities
1. Imagining the future of cities and mobility.

2. Designing integrated, people-focused planning to sustain cities.

3. Measuring the social, economic and environmental value created by the movement, interaction and transaction of people.

The fundamental purpose of cities
Cities are for transaction: economic and social transaction. People come to cities to trade. It is why we have cities – they are intensifications of opportunities to trade. The public realm of the city – its network of streets and spaces – is where much of this trade occurs: a “transaction machine” which, like any machine, is more or less efficient depending on how it is engineered. Continue reading

Centres and Cities

I’m sure you’re right about the link between street morphology and attractiveness to business. Centres seem to do one of three things through time. They either:

1. consolidate and grow (London, Paris)

2. move (Jeddah)

3. implode (Sunderland).

Oh, and some places:

4. never have a functioning centre (Skelmersdale, UK New Towns) because they were designed in ignorance of the importance of a) grid continuity and b) multi-scale centrality – properties measured by Space Syntax models

or

5. divide and reunite (Berlin) but we can’t blame the architects for that!

Email to Paul Swinney at the Centre for Cities

New blog for Faversham Yellow Lines campaign

Information on the campaign against the painting of yellow lines across Faversham town centre has moved to a new blog.

Thank you for all the support so far!

UK Spatial Infrastructure Model

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This is a model of the spatial infrastructure of Great Britain (and will soon include Northern Ireland to become a model of the United Kingdom). It allows us to zoom in and out on cities, towns and villages as well as the connections between them. It also lets us understand the hierarchy of connections at different scales – which routes are more important at a local, pedestrian scale and which are more important at a cross-country, car scale. More important routes are coloured red, then orange and green to less well connected routes in blue. Continue reading

Spatial Layout as Critical Infrastructure

Stub…notes for an upcoming conference talk

Key issue to be addressed:

- Urban-Rural development

- Urban Regeneration

- Smart Cities.

When a network of streets is laid out, planners and designers build in an enormous amount of “embedded potential”:

  • the pattern of movement
  • land use potential
  • safety
  • land value
  • social interaction
  • public health
  • carbon emissions.

The design of the street network has a fundamental and measurable influence on each of the above.

Later changes – to land use pattern or to the local design of streets (eg road widening or narrowing, adding cycle lanes or public transport) – can enhance or even diminish these potentials, but such later changes always occur around a benchmark that is set by spatial configuration decisions.

Buildings come and go – are built and demolished – but the spatial network, once laid out, is harder to adjust.

Exceptional new connections – such as bridges – can be built to connect disconnected networks but grids are resilient to change. Therefore, putting the wrong grid into an urban development can be a pathological move, setting the socio-economic potential of places for generations to come.

How do we know this?

The evidence-base: post-war housing estates; UK New Towns. Places that go wrong within a generation, if that – sometimes within a few years. Car-dominant transport planning. Land use zoning.

Risk of failed UK models.

In finding a balance between the tension of urban and rural development, Chinese towns and cities should learn from China first:

- mixed use planning: marginal separation by linear integration.

- mixed mode planning: roads, streets, lanes, canals: Jiading.

- mixed character planning.

What are the Spatial Layout requirements?

The historic Chinese grid: rectilinear hierarchy.

Pervasive centrality.

A smart street-grid.

To be developed…

Spatial Planning and the Future of Cities

How might cities be planned in the future?

This is not only a question of how they might look but also, and more importantly, about how they might be laid out as patterns of buildings and spatial connections.

Laying out a city means answering two key questions: “what goes where?” and the “how does it all connect together?” The answers to these questions have fundamental implications for the social, economic and environmental performance of urban places. And the jury is out as to which is the best way to do so: to use spatial planning to create place.

The global urban risk is that architects and planners have created, and continue to create, highly unsustainable city layouts – car dependent, socially divisive, congested and life-suppressing. And, it would seem, the more technologically advanced cities have become, the less efficiently they have worked.

By contrast, the street-based, continuously connected grid – the kind of layout that the slow, incremental evolution of cities produced before the intervention of modernism – has largely fallen out of fashion.

My argument in this piece is that the continuously connected grid is the only form of urban layout that can deliver sufficient social, economic and environmental value. The only kind of grid that is truly sustainable. Continue reading