Unit 6.5-6.7

The basic structure of services, installations, and facilities needed to support industrial agricultural and other economic development; included are transport and communications, along with water, power, and other public services.

• Infrastructure

• Urban Hierarchy

• Metropolitan Area

• Situation

The change in density in an urban area from the center to the periphery.

• Density Gradient

• Filtering

• Infilling

• Redlining

A law that limits the permitted uses of land and maximum density of development in a community.

• Zoning

• Council of Governments

• Redlining

• Blockbusting

The process of creating new developments on empty parcels of land within an area that is already urbanized.

• Infill

• Mixed-Use Development

• Blockbusting

• Gentrification

A process of change in the use of a house, from single-family owner occupied, to multi-family renter occupied, to abandon.

• Filtering

• Infilling

• Redlining

• Gentrification

An urban model created by Homer Hoyt describing how different types of land use grew outward as the city expanded created wedge, or sectors, of land use.

• Sector Model

• Concentric Zone Model

• Galactic City Model

• Multiple Nuclei Model

An urban model created in the 1940s by Chauncy Harris and Edward Ullman suggesting that functional zones of land use occured around multiple centers, or nodes.

• Multiple Nuclei Model

• Concentric Zone Model

• Sector Model

• Galactic City Model

An urban model created in the 1950s by Chauncy Harris describing the increasing number of people and services moving out to the suburbs. The model named these new nodes business and consumer services edge cities.

• Galactic City Model

• Concentric Zone Model

• Sector Model

• Multiple-Nuclei Model

An urban model describing urban areas in Africa with a three part CBD (traditional, colonial, informal).

• Sub-Saharan Africa City Model

• Latin American City Model

• Southeast Asian City Model

• Islamic City Model

An urban model representative of many cities throughout areas of the Middle East & North Africa. Some of the more notable elements include a mosque, citadel, and a market/bazaar. 

• Islamic City Model

• Sub-Saharan Africa City Model

• Latin American City Model

• Southeast Asian City Model