Sector theory
- 1. SECTOR THEORY by Homer Hoyt Submitted by -Anoushka Tyagi -Atul Tyagi -Neha Uniyal
- 2. INTRODUCTION CONCENTRIC ZONE THEOREY CHICAGO AS CONCENTRIC ZONE THEORY LIMITATIONS AND CRITICISMS OF CONCENTRIC ZONE MODEL SECTOR MODEL COMPONENTS OF SECTOR MODEL CHICAGO AS SECTOR MODEL ADVANTAGES OF THE SECTOR MODEL LIMITATIONS OF SECTOR MODEL SIMILARITY BETWEEN CONCENTRIC AND SECTOR MODEL SIMILARITY BETWEEN CONCENTRIC AND SECTOR MODEL CONTENTS
- 3. INTRODUCTION • With time, a number of models have been created based on studies to identify patterns of land use to overcome the • complexity of land uses found throughout a city. Land use models are theories which attempt to explain the layout of urban areas. • The forces underlying the pattern of land use, process of urban growth and accessibility within and outward of a city can be generalized by means of a number of theories. The commonly referred models of city structure or theories explaining urban morphology are ✓ CONCENTRIC ✓ SECTORAL • THE MULTIPLE NUCLEI: Multiple nuclei model of 1945 by C.D. Harris and Edward L. Ullman is based on the argument that the cities have multiple growth points or “nuclei” around which growth take place. SOURCE: https://pranilblogs.wordpress.com/2016/10/08/sector-model-a-brief-analysis/ https://planningtank.com/settlement-geography/hoyt-model-sector-model-land-use-1939-homer-hoyt
- 4. CONCENTRIC ZONE THEORY (1925) Ernest Burgess • Ernest Burgess gave a model to define how different social groups are located in a metropolitan area. • Social groups based on the socio-economic status of households and distance from central area or downtown. This model is known as the concentric zone model. EARNEST W BURGESS • Ernest Watson Burgess (May 16, 1886 – December 27, 1966) was a Canadian- American urban sociologist born in Tilbury, Ontario. • Educated at Kingfisher College in Oklahoma and continued graduate studies in sociology at the University of Chicago. • In 1916, he returned to the University of Chicago, as a faculty member. Burgess was hired as an urban sociologist at the University of Chicago. • Burgess also served as the 24th President of the American Sociological Association (ASA). SOURCE: https://pranilblogs.wordpress.com/2016/10/08/sector-model-a-brief-analysis/ https://planningtank.com/settlement-geography/hoyt-model-sector-model-land-use-1939-homer-hoyt
- 5. This model is based on the concept that land values are highest in the centre of a city or town. This is because competition is greater in the central parts of the settlement. This leads to high- density buildings, high-rise being found near the Central Business District (CBD), with sparse, low-density developments on the edge of the town or city. Eg. Old set up of Chicago • Social structures extend outward from one central business area. • Population density decreases towards outward zones • Shows correlation between socioeconomic status and the distance from the central business district i.e better the economic status more the distance from the central area. • Also known as the Burgess Model, the Bull’s Eye Model, the Concentric Ring Model, or the Concentric Circles Model.
- 6. ZONE 1: CENTRAL BUSINESS DISTRICT • Non-residential center for business. • “Downtown” area • Emphasis on business and commerce • Commuted to by residents of other zones ZONE 2: ZONE OF TRANSITION • “Least desirable place to live in the city” • Dilapidated housing and infrastructure • Large percentage rent • Highest crime rate • High rate of people moving in and out ZONE 3: WORKING CLASS • Modest older homes • Stable, working class families • Can afford to move out of Zone 2 • Second generation immigrants ZONE 4: MIDDLE CLASS or Zone of better residences • Newer, more spacious homes • Less likely to be rented • Well educated ZONE 5: COMMUTERS • Mostly upper class •Low rise development •large gardens, •less population density • Can afford to commute into city for work or entertainment
- 7. CHICAGO •Many of the original and innovative contributions to the field of urban sociology came out of the University of Chicago in the early 20th Century. Two of the major proponents of urban ecology were •Ernest Burgess and •Robert E. Park, professors at the University of Chicago, they proposed a model for the spatial organization of cities called concentric zone theory which along with Hoyt’s sector model and Harris and Ullman’s multiple nuclei model is considered a classic model of urban land use. •Chicago, a city in the U.S. state of Illinois, is the third most populous city in the United States and the most populous city in the American Midwest with approximately 2.7 million residents. Its metropolitan area is very large CASE STUDY
- 8. The principle structural regions of Burgess’ Chicago are: 1. Loop (CBD), the business centre and the region of greatest mobility. Hotels are located here and the residents are primarily transients. This area empties at night and fills in the morning. 2. Transition zone: occupied by slums. This was the former suburbs of the old city and was taken over by businesses expanding from the CBD. Apartments here are flats, furnished rooms and are deteriorated and occupied primarily by childless people. 3. Workingmen’s homes: roomers (on the edge of the slums) where factory workers and shop workers with families dwell and unsettled young people – the ‘respectable’ working class. 4. Zone of better residences: apartments, small families and shops. Here the middle class residents dwell and this area is served by local subsidiary shopping centres. 5. The commuter’s zone: duplex apartments (houses converted into double flats), single dwellings, house owners and families. Further out we can identify two more concentric zones: 6: the agricultural district and zone 7: the hinterland.
- 9. LIMITATIONS AND CRITICISMS OF CONCENTRIC ZONE MODEL Concentric zone model is one of the simplest model available. This model accounts for the economic forces which drive development and the study of patterns present at the time of the study. But with the evolution and passage of time urban areas grew more complex and this model cannot define the development of existing cities. Some of the limitations and criticism include: •Although widely appreciated in the United States Burgess model is not applicable outside the US. This is so, as the pattern of growth is different because of various circumstances. •The relevance of this model decreased over time. With the advancement in the mode of transportation, mass transit vehicles, motor vehicles, cars changed the way people commute. Accordingly, their preference for living in a particular zone changed. •It does not take into account the effect of political forces and the restrictions imposed by the government for the improvement of living conditions. •In reality, no distinct zones and boundaries exist as overlapping of areas is possible in every town. The preference of people changes over time depending on the importance they associate for a particular benefit. •This model is not applicable to polycentric cities as many CDB exists in such towns. Moreover, every city is different, and the factors influencing the growth of a city are diverse.
- 10. HOYT’S SECTOR MODEL Homer Hoyt (1895–1984) was a land economist, a real estate appraiser, and a real estate consultant. In his long and accomplished life, •he conducted path-breaking research on land economics, •developed an influential approach to the analysis of neighborhoods and housing markets, •refined local area economic analysis, and • was a major figure in the development of suburban shopping centers in the decades after World War II. •His sector model of land use remains one of his most well-known contributions to urban scholarship. • The sector model is an updated version of the concentric zone model. •As the city grows, activities within it grow outward in a wedge shape from the Central Business District (CBD). •Hoyt modified the concentric zone model to account for major transportation routes. •Most major cities evolved around the nexus of several important transport facilities such as sea ports, railroads, and trolley lines that radiated from the city’s centre. •It is a mono centric representation of urban areas.
- 11. COMPONENTS OF HOYT’S SECTOR MODEL The Central Business District (CBD) is the area of the city where retail and office activities are clustered, and is the centre of the city, economically and geographically. Low Class Residential •The low income residential tend to be close to railroad lines, and commercial foundations along the business areas. •mainly occupied by the poorer people who usually work in the factories, so they have to live close to the industry to save transportation costs. •less desirable for living, due to traffic, noise, and smells and pollution emitted from the industries, SOURCE:https://www.livingston.org/cms/lib4/NJ01000562/Centricity/Domain/813/Compare%20and%20Contrast% 20Urban%20Land%20Use%20Models.pdf
- 12. Industry and Transportation •The industry sectors are predominantly set up along transportation lines such as water canals and rail lines. •provides an income for the low income people of the society and the needs for the people. Middle Income Residential •The middle income residential are further away from manufacturing and industrial sectors •more desirable to live in than low income residential. •It joins the CBD for working middle income people for easy access to work. •These housings have trees and are much more spacious. High class residential •The high income residential are the most expensive housing and have the greatest distance from industrial sectors, •cleaner environment with less traffic jams, cleaner air and sounds.
- 13. Chicago today is closer to this model than the original concentric zone model. Calgary in Canada is also another example of a sector model city. With the 20th century public transport became an important part of city planning. Now along with private vehicles , and also increasing demography public transport was important to include in the model. Now places with transport and accessibility the land value started increasing . So now roads were planned and the expansion was along the road and the sectors such formed took a wedge shape. Legend- Loop- CBD Lakeview centre, lincoln park old town- Highly populated residential area Hayde park(green area)- Ports of chiacgo Uptown- Commercial area, high rise Image source:http://libertaddeeleccion.org/chicago-l-train-map/chicago-l-train-mapphotographic-gallerychicago-l- subway/
- 14. Advantages of the Sector Model: •It looks at the effect of transport and communication links. •Numerous cities do seem to have followed this model. If turned 90 degrees anti-clockwise, the Hoyt model fits the city of Newcastle upon Tyne reasonably accurately. •Pie shaped wedges made by Hoyt compensated for the drawbacks of the Ring model. •Though not perfect it takes into account the lines of growth. •It allows for an outward progression of growth. Limitations of sector model: •There is no reference to the physical environment. •The theory is based on nineteenth century transport and does not make allowances for private cars which allow commuting from outside city boundaries where land is much cheaper. •The growth of a sector can be stopped with land use radiating out of the inner city. •It does not consider the new concepts of edge cities and boom burbs, which came up in the 1980s, after the creation of the model. Since its creation, the traditional CBD has diminished in importance as numerous office and retail buildings have moved into the suburbs. •Like all models of urban form its validity is limited. SOURCE: https://www.livingston.org/cms/lib4/NJ01000562/Centricity/Domain/813/Compare%20and%20Contrast%20U rban%20Land%20Use%20Models.pdf
- 15. SIMILARITY BETWEEN CONCENTRIC AND SECTOR MODEL: 1) Both models focus on importance of accessibility. The centrally located C.B.D. is the most accessible and its land value or rent-bid is the highest. 2) Distance decay theory (is a geographical term which describes the effect of distance on cultural or spatial interactions)The distance decay effect states that the interaction between two locales declines as the distance between them increases. is applicable in both models. Land value and population density decline with distance from the central places. 3) There are clear-cut and abrupt boundaries between the land-use zones. 4) Both concern the study of ground-floor functions instead of the three-dimensional study as height of buildings is neglected 5) Residential segregation SOURCE: https://www.livingston.org/cms/lib4/NJ01000562/Centricity/Domain/813/Compare%20and%20Contrast%20U rban%20Land%20Use%20Models.pdf
- 16. CONCENTRIC MODEL: 1) concentric model with circular pattern of land use zones; while sector model with sectoral pattern of land use zones. 2) concentric model never mentioned the transport development . 3) but concentric model concerns the invasion, succession forces on the pattern of the land use. SECTOR MODEL: 1)while sector model with sectoral pattern of land use zones 2) land use zones in sector model developed along transport routes radiating out from CBD 3) sector model emphasizes the repelling forces of land uses. DIFFERENCES BETWEEN CONCENTRIC AND SECTOR MODEL SOURCE: https://www.livingston.org/cms/lib4/NJ01000562/Centricity/Domain/813/Compare%20and%20Contrast%20U rban%20Land%20Use%20Models.pdf
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