Chapter 17
Page 1: Designing for Urban Life
Overview of Urban Growth
Human Decisions: Cities grow due to a mix of conscious and unconscious decisions by humans.
Geographic Processes: Understanding these processes aids in designing sustainable and livable cities.
Learning Objectives
Identify different urban design initiatives and practices.
Explain the effects of these initiatives.
Urban Sustainability
Challenge: Cities face sustainability issues as they grow and populations shift.
Definition: Urban sustainability involves controlling pollution and reducing a city's ecological footprint.
Ecological Footprint: Measure of land required to sustain urban resource use.
Livability in Cities
Concept: Livability is determined by factors affecting quality of life, including:
Built and natural environments
Economic prosperity
Social stability, equity
Access to educational, cultural, and entertainment opportunities
People in livable cities have little reason to leave.
Sustainable Design Initiatives
Urban planners are implementing various sustainable design strategies, such as:
Mixed Land Use: Combines residential and commercial spaces to minimize travel needs and reduce sprawl.
Walkability: Safe, convenient environments for pedestrians and cyclists.
Transportation-Oriented Development: Communities that focus on public transit accessibility.
Smart Growth Initiatives: Includes New Urbanism, greenbelts, and slow-growth strategies.
Urban Sprawl and Its Impacts
Issues:
Environmental degradation
Loss of rural land
Increased pollution from reliance on cars
Mixed-use Development (MUD):
A planned space incorporating various uses (residential, commercial, etc.) designed to increase density and reduce transport needs.
Examples: Vertical mixed-use buildings, neighborhood blocks of different types of housing, businesses, and recreational areas.
Walkability Characteristics
Influences on walkability include:
Availability of multi-use paths and bike-friendly infrastructure.
Access to facilities within walking distance;
Cities improving walkability through revitalization and redevelopment efforts.
Transportation and Sustainability
Transportation Goals: Improve access to public transit to reduce car dependency, save fossil fuels, and lower pollution levels.
Examples of effective transportation systems:
Arlington County, Virginia: Created transit-friendly neighborhoods, achieving 36 million square feet of office space and over 47,000 housing units.
Effectiveness of Strategies: Integrated transport systems reduce environmental impacts and enhance urban livability.
Page 2: Smart-Growth Policies
Overview of Smart-Growth Initiatives
Purpose: Control urban sprawl and enhance livability through policies promoting sustainable development.
Example: Arlington County uses incentives for mixed-use developments.
Zoning as a Smart-Growth Tool
Zoning Laws: Regulate land use, promoting higher density and mixed-use developments.
Types: Mixed-use zoning versus traditional zoning that segregates uses by type.
New Urbanism: A movement advocating for reduced urban sprawl, preserving nature, and creating inclusive community spaces.
Successful Case Studies
Rosslyn-Ballston Corridor: An example of New Urbanist principles in action, focusing on pedestrian-oriented development.
Curitiba, Brazil: Known for sustainable urban planning since the 1970s, including innovative public transit solutions and preserved green spaces.
Page 3: Commute Times and Urban Issues
Average Commute Trends
1980 vs. 2018 Commute Times:
Average increased from 21.9 minutes to 27.1 minutes.
Additional time correlates with increased annual commuting hours (22.6 hours per year).
Worst Commute Areas in 2019
Notable cities with long average commute times, including Naperville, IL, and New York City.
Commute Impact on Well-Being
Study findings from the UK indicate longer commutes negatively affect happiness levels.
Commuting Demographics: Significant amounts of time spent commuting can lead to lower quality of life.
Urban Planning Response
Solutions: Integrating smart-growth strategies to enhance urban living by addressing commute challenges.
Curitiba's Initiatives: Early adopter of sustainable practices, including improved public transit systems and engagement in environmental regulation.
Page 4: Growth Management and Urban Challenges
Growth Management Policies
Definition: Strategies used to ensure urban development does not overwhelm existing infrastructure.
Zoning Regulations: Large-lot zoning to limit sprawl and promote high-priced housing, impacting affordability.
Benefits of Proper Management: Protects farmland and encourages higher-density communities to minimize environmental impact.
Housing Diversity and Accessibility
Goals: Promoting mixed-income neighborhoods through diverse housing options to meet urban needs.
Examples: Tucson's transformation of public housing into mixed-income units.
Page 5: Environmental and Social Factors in Urban Design
Urban Greenbelts
Definition: Rings of parkland or agricultural land around cities to limit urban spread and promote ecological health.
Social Benefits: Provides access to nature for urban residents, enhancing quality of life.
Urban Planning Challenges
Inclusivity in Planning: Citizen involvement is crucial in designing spaces that effectively meet community needs.
Greenbelt Case Studies: The historical establishment of greenbelts, such as London's Green Belt, illustrates the need for effective land use regulation.
Page 6: Social Dynamics in Urban Design
Smart Growth Social Impacts
Benefits: Promotes diverse communities and social interactions across demographic lines.
Critiques: New developments may lead to displacement of lower-income residents and lack of true diversity in gentrifying neighborhoods.
Case Studies for Analysis
Baxter Village: Examples of socioeconomic segregation despite well-intended design.
Providence, Rhode Island: Urban reimagining focused on inclusivity but has not achieved expected economic diversity.
Page 7: Urban Growth Theory and Legal Aspects
Legal Aspects of Urban Growth
Rental Market Challenges: Exclusionary practices and gentrification implications for low-income demographics.
Land Tenure Issues: Women often face increased barriers when claiming property rights, exacerbating socioeconomic challenges.
Urban Planning Strategies
Inclusionary Zoning: Laws designed to promote affordable housing in new developments, impacting overall housing markets.
Challenges of Implementation: Debates over costs and market pricing complexities tied to inclusionary practices.
Historical Context
Redlining and Blockbusting: Historical practices shaping current urban landscapes and affecting populations' access to housing.
Page 8: Urban Sustainability Challenges
Environmental Justice and Urban Farming
Urban farming initiatives provide fresh food alternatives and combat environmental inequalities.
Grassroots organizations champion environmental initiatives to improve air quality.
Urban Renewal and Gentrification
Urban Renewal Projects: Historical efforts leading to reinvestment but causing displacement.
Gentrification benefits vs. drawbacks: Improved neighborhoods vs. loss of low-income housing availability.
Page 9: Global Urbanization and Challenges
Urbanization Trends
Rapid growth in periphery cities, such as Delhi and Jakarta, shows significant internal migration driven by economic conditions.
Squatter Settlements: As populations rise, these areas reveal the urgent need for better housing solutions.
Page 10: Comprehensive Planning Solutions
Sustainable Urban Solutions
Regional Planning: Involves cooperative government efforts to address sustainability at a broader scale.
Brownfield Remediation: Revitalizing contaminated sites to enhance urban sustainability and decrease abandonment.
Page 11: Future Urban Innovations
Designing for Future Cities
Emphasis on renewable energy buildings that maximize environmental benefits and community engagement.
Principles of Livability: Future cities prioritize safety, green spaces, and accessibility.