Designed by Students of Planning as a Resource for Citizens of Connecticut Towns.

5/3/10

Smart Growth and Technology

by Pete Burke

Smart Growth is the use of urban policy and design in cities, towns, subdivisions and existing suburbs to promote more sustainable communities. There is no consensus on an exact definition for smart growth, rather most organizations measure smart growth through principles. One of the leading websites on smart growth, which receives funding from organizations like the U.S. Environmental Protection Agency is Smartgrowth.org. The ten principles of smart growth, as designated by www.smartgrowth.org are:

• Create Range of Housing Opportunities and Choices
• Create Walkable Neighborhoods
• Encourage Community and Stakeholder Collaboration
• Foster Distinctive, Attractive Communities with a Strong Sense of Place
• Make Development Decisions Predictable, Fair and Cost Effective
• Mix Land Uses
• Preserve Open Space, Farmland, Natural Beauty and Critical Environmental Areas
• Provide a Variety of Transportation Choices
• Strengthen and Direct Development Towards Existing Communities
• Take Advantage of Compact Building Design

Technology for a Sustainable Future

While the concept of smart growth has been around since the 1990's, new technology in the 21st Century will be vital to the development of the field. Some of these technologies are the different types of spatial software now available. Two of these softwares being developed are Geographical Information Systems (GIS) and 3-D rendering.

The first of these, the GIS software, is mainly made by ESRI. ESRI's software, like ARCMap, are seen as "planning support systems" and can be used to present alternative build-out scenarios. An example of this is presented on ESRI's website about Bowen Island in British Columbia. The planners in this small rural community used an extension for ARCMap called CommunityViz, which can create multiple scenarios using different zoning parameters. For example, in Bowen Island they created layers representing the current zoning pattern and all environmental constraints on development like wetlands, slopes over 25 degrees, farming soil and forested lands. When the current zoning pattern is activated, viewers can see how much land is devoted to conservation, housing, commercial and industrial. Next, the constraint layers can be activated and automatically the number of housing units and land available for commercial or conservation adjusts. So if all layers of constraints are turned on, obviously there will be more conserved land and less for development. But an added advantage of extensions like CommunityViz on software like ARCMap is the amount of detail a GIS analyst can put into the map. A specific type of animal species can be tied to certain parcels of land, so if a town or city wants to preserve a particular type of species they select that species and the parcels of land that need to be preserved in order to save the species will be highlighted in CommunityViz. Another type of example for CommunityViz can be seen in this video.

The second type of software defining the future capability of smart growth is 3-D rendering software. 3-D software will help planners visually see how smart growth codes impact the built and natural environment. This software is the same software being used in many new video games, and also search engines like Google's SketchUp. 3-D software helps a viewer better understand visually how a new development will look, while GIS software is more technical and is usually just used by the planning staff internally. While 3-D software does not have the technical aspects of how the redevelopment will be in terms of exact size of buildings, or even the exact look of the buildings it does do a good job of helping the viewer understand what the architects and planners are visualizing. A video example is available here, which shows the 3-D rendering of a harbor by the Urban Redevelopment Authority of Singapore.

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