Physical Density and Urban Sprawl: A Case of Dhaka City - KTH

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should be a functioning unit, be investigated in its natural context with a multitude of methods, and be contemporary” (Johansson 2005:31). He further notes that a case study and, normally, history focuses on one case but simultaneously take account of the context, and so encompass many variables and qualities. The main aim of the study is to explore the relationship between physical densities, spatial qualities and urban sprawl within the context formal and informal settlements of Dhaka city. Eight housing settlements, six from formal and two from informal settlement, and their components of physical densities and spatial qualities were selected. Data was collected and analysed for each study area. 1.4.2 Why Dhaka is selected as a case areas The present study regards the physical densities and spatial qualities of housing settlements as well as their impact on urban sprawl. Dhaka is the capital city of Bangladesh. Approximately, 56% percent of the Dhaka city’s population lives in informal housing (Titumir and Hossain, 2004). There are 3007 small to large informal housing settlements with 10 or more house clusters covering area of 420 hectares in different parts of Dhaka (CUS,1996). The built up area is increasing rapidly due to the development of informal settlements in the inner part and in the periphery of the city. Between 1990 and 2000, the built-up area of Dhaka Metropolitan area has increased by around 46% (JICA Baseline Study, 2000 in Azam, 2006). The expansion of the city is occurring both horizontally and vertically due to the development of formal and informal housing settlements. 1.4.3 Selection of housing blocks for detail studies Since the study is related to the physical densities, spatial qualities of housing settlements and urban sprawl, both the formal and informal housing blocks have been identified, classified and discussed to compare their variables of FAR, percentage of land coverage by buildings; usability of space, availability of cross ventilation and provision of daylight inside the block. . Figure 1.1: Procedure of block selection (Google Earth, 2007) 4
Since the study is dealing with the physical densities, spatial qualities of housing settlements and urban sprawl, in order to do study at lower level scale, ‘urban blocks’ have been considered as the major units of analysis. Despite that house on plot is not sufficient to understand urban sprawl because communal open spaces and streets need to be considered to understand the phenomenon of urban sprawl. The urban blocks have been studied to consider such communal open spaces and surrounding roads. Analysis of the city in district level is relevant but not practical. Figure 1.1 is showing the selection of block from urban housing settlements. The following criteria were taken into consideration to select the blocks of formal and informal settlements: First, the variations of blocks, in terms of FAR were taken into consideration for the selection of formal housing blocks. Secondly, the location, age and house form of the informal settlements were considered as the criteria because physical densities of the informal settlements depend on the age and location of the settlement. House forms have been considered as a factor to classify informal settlements in Dhaka city. The approach used to select urban blocks for detailed studies was by identifying which is enough to facilitate the comprehension of key study variables namely: FAR value, percentage of land coverage by buildings, space usability, cross ventilation and provision of daylight inside the block. Fig 1.2: Location of case areas In relation to those criteria blocks from Road number 3 at Dhanmondi residential area, Shobhanbagh government officers’ colony, Banani Model Town, Baridhara diplomatic zone, newly planned Defense Officers’ Housing Society (DOHS) in Baridhara, Mirpur 10 number 5
Page 1 and 2: KTH Architecture and the Built Envi
Page 3 and 4: CHAPTER 6: FINAL ANALYSIS..........
Page 5 and 6: ABSTRACT Md. Syful Islam: Physical
Page 7 and 8: CHAPTER 1 INTRODUCTION This study a
Page 9: Habraken (1998:292-93) states that,
Page 13 and 14: Banani Model Town residential area
Page 15 and 16: Applied Procedure to calculate land
Page 17 and 18: CHAPTER 2 THEORY OF THE CONCEPTUAL
Page 19 and 20: crowded and unsuitable environments
Page 21 and 22: unrealistic because tall buildings
Page 23 and 24: Carlos Barquin et. el. (1986) emplo
Page 25 and 26: Fig 2.7: Cluster of Informal settle
Page 27 and 28: Figure 3.1: Physical growth of Dhak
Page 29 and 30: Until 1951, Bangladesh was almost c
Page 31 and 32: 3.5 Land use pattern of Dhaka city
Page 33 and 34: construction is illegal while squat
Page 35 and 36: even accuse RAJUK, the most promine
Page 37 and 38: CUS, the number of informal settlem
Page 39 and 40: Figure 3.9: Ratio of formal and inf
Page 41 and 42: CHAPTER 4 FINDINGS FROM THE INFORMA
Page 43 and 44: Spatial qualities Spatial qualities
Page 45 and 46: settlement are selling their daily
Page 47 and 48: The houses are very close to one an
Page 49 and 50: Figure 4.15: The space inside the h
Page 51 and 52: It can be seen from the findings of
Page 53 and 54: 5.2 Shobhanbagh officers’ colony
Page 55 and 56: . Figure 5.4: Aerial photograph of
Page 57 and 58: CHAPTER 6 FINAL ANALYSIS Chapters 4
Page 59 and 60: narrow roads for drying and washing
Page 61 and 62:
CHAPTER 7 RECOMMENDATIONS AND CONCL
Page 63 and 64:
of proper monitoring in housing mar
Page 65 and 66:
Nnaggenda-Musana A., (2004), Sprawl
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Physical Density and Urban Sprawl: A Case of Dhaka City - KTH

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