lecture 5: urban & regional planning (risk mitigation concept)
TRANSCRIPT
Welcome to Lecture 01to Lecture 01 We
DSMHT 305: Urban and Regional Planning: Risk Mitigation Concept
Department of Disaster Science and ManagementUniversity of Dhaka
Bangladesh
Prepared by-BAYES AHMED
13 DECEMBER 2015
Welcome to Lecture 05
Urban Area Plan
Urban Area Plan is the second stage of the master plan package.
This plan is based on the framework of the Structure Plan prepared in the earlier phase.
The Plan is intended to address those areas of the Structure Plan that are likely to face urban growth during next 10 years
It includes the SCC and adjacent areas like Kasba Akhalia, Kumargaon (Part), Sadipur 1st Part, Debpur (Part) and Bahar (Part).
Urban Area Plan
The Urban Area Plan is aimed to,
- determine the present and future functional structure of the city, including land use;
- provide infrastructure proposals for improving and guiding development of future urban area.
The objectives of the plan will be attained through,
- location of appropriate communication network; - orderly location of various urban land uses; - orderly location of services and facilities.
Urban Area Plan
Urban Area Plan is the first phase detailed illustration of the policies and strategies of the structure plan.
It designates plot-to-plot use of land.
It will also serve as a development control mechanism/instrument. Thus it is more rigid than Structure Plan.
Making a land use plan on a cadastral map makes the Urban Area Plan more rigid. Once the plan on a cadastral map is drawn and accepted by the government and formalized, it gains a formal status and thus becomes a binding for all concerned.
Urban Area Plan
The reason behind choosing UAP area lies in fact that this is the most urbanized part of the structure plan area, where there is still scope and possibility of urbanization in the near future.
Urban Area Plan
Recommended Planning Standard
The planning standards are suggested on anticipated rate of future urbanization, availability and value of land, future size of population, environmental quality and above all future need of the target population considering the guiding policy of optimizing use of land.
The concentration is given on the planning standard on the following selected areas:
1. Road 2. Residential Area 3. Social Services 4. Community Facilities and Recreation 5. Physical Infrastructure Facilities
Urban Area Plan
Recommended Planning Standard
The planning standards are suggested on anticipated rate of future urbanization, availability and value of land, future size of population, environmental quality and above all future need of the target population considering the guiding policy of optimizing use of land.
The concentration is given on the planning standard on the following selected areas:
1. Road 2. Residential Area 3. Social Services 4. Community Facilities and Recreation 5. Physical Infrastructure Facilities
Urban Area Plan
Overall Road Hierarchy Standard Primary Road New Construction: 30.45m (100 ft.)Widening of Existing Road: 18.30.39m-24.39m (60-80 ft)
Secondary RoadNew Construction: 12.20m (40 ft.) Widening of Existing Road: 9.15m (30 ft)
Collector RoadNew Construction: 9.15m (30 ft) Widening of Existing Road: 6.09m (20 ft. Minimum)
Access RoadNew Construction: 9.15m (30 ft) Widening of Existing Road: 6.09m (20 ft. Minimum)
Urban Area Plan
Residential Density Control
Public Sector Housing Estate
Gross Density/Acre : 180 persons Net Density/Acre : 300 persons
Private Sector Housing Estate-Cooperative and Commercial
Gross Density/Acre : 211 persons Net Density/Acre : 325 persons
The density standards of public sector sponsored housing estates are determined using the following assumptions:
Urban Area Plan
2 units in each floor of each 3 katha plot on average,each building having 3 storey in height,6 families living in each 3 katha,total population in each 3 katha (assuming 5 as average H/H size) : 5 x 6 = 30 persons, Net density per acre = (30 ÷ 3 x 60) = 600 persons
Assuming 60 acres as net residential area of a 100 acre residential area estate, total population of the housing area : 60 x 600 = 36,000Gross density of public sector housing area (36,000 ÷ 100) = 360 persons/acre
[1 Katha = 720 sq ft; 1 Acre = 3 bigha = 60.5 katha]
Urban Area Plan
Urban Area Plan
Urban Area Plan
Primary School
The consultant has determined a standard of one primary school for every 5000 population of the study area.
For a projected population of about 1313408 of the Urban Area Plan area (2020) this would give (1313408 / 5000) = 262 schools.
Having 350 students in each shift and two shifts in each school this number of schools will accommodate (350 x 262 x2) 183400.
Considering 15% of the population (5-11 age group) as primary school going, the total number of students come to (1313408 x 15 /100) 197011 in the year 2020.
Urban Area Plan
Primary School
This means that the proposed number of schools would be able to accommodate the entire number of primary level students in the year 2020.
There already exists 78 primary schools in the proposed urban area, so additional 184 primary schools will be needed in the year 2020.
Each school having 1 acre of land the total land required for primary schools will be (1x184) 184 acres (74.50 ha).
Urban Area Plan
Secondary School
The suggested standard for secondary school is one school for each 8000 population. For a projected population of 1313408 of the Urban Area Plan area (2020) this would give (1313408 / 8000) 164 secondary schools. With two shifts each day and 575 students in each shift this number of schools will accommodate (575 x 164 x 2) 188600 students. Considering 15% of the population (6-15 age groups) as secondary school going age the total number of students comes to (1313408 x 15 /100) 197011 students. There already exists 32 schools in the proposed Urban Area Plan area, so additional 132 schools would be required by the year 2020. Each Secondary School having 2 acre of land the total land required for primary schools will be (2x132) 264 acres (106.88 ha).
Urban Area Plan
College
For college (higher secondary and degree) the suggested standard is one college space for every 25,000 population. This would produce (1313408/25,000) 53 colleges in the proposed urban area in 2020. Each college on average accommodating 1800 students the proposed 53 colleges would be able to accommodate (53 x 1800) 95400 students. There already exist 26 colleges in the urban area. Additional 27 colleges will be required by the year 2020. Space for each college is suggested at 3 acres, so the total land needed for 27 colleges will be (27x3) 81 acres.
Urban Area Plan
Land Use ZoningThe Urban Area Plan area has been divided into 20 land use zone. • To follow the existing trend of land use development. • To promote economic activities. • to allow intermingling of uses particularly the
commercial use. • Mixed use zone has been introduced where small
commercial and non-polluting service and processing establishments will co-exist with residential use.
• To allow maximum possible freedom to investors to set up their establishments at places most suitable for their operation.
• Urban reserve land class has been introduced to reserve land for future urban use.
Urban Area Plan
Urban Area Plan
Environmental Improvement
1. Physical Environment
Flood Protection Earthquake Change in Topography Land Use Change Drainage Congestion Surface Water Pollution Groundwater Depletion Groundwater Pollution Loss of Wetlands Noise Pollution Air Pollution Unlawful Hill Cutting
Urban Area Plan
Environmental Improvement
2. Biological Environment
Loss of Habitat Loss of Biodiversity Loss of Capture Fisheries Loss of Ponds and Culture Fisheries Loss of Productive Agricultural
Urban Area Plan
Environmental Improvement
3. Social Environment
Population Literacy Status of Women Electricity Telephone Health Services Human Diseases Sanitation Parks and Recreational Places Solid Waste Water Supply Social Forestry
Urban Area Plan
Environmental Improvement
4. Economic Environment
Traffic Congestion Fire Hazard
Urban Area Plan
Detailed Area Plan
The Detailed Area Plan (DAP) is a series of detailed spatial development plans of different types.
The DAPs consist of design and other implementation details.
The aim of a DAP is to prevent haphazard urban development and ensure livable environment in areas that are likely to be urbanized soon.
Initially Detailed Area Plan should be prepared for only those areas where action is needed immediately or where development pressure is high.
Detailed Area Plan
Purpose of the Detailed Area Plan
The provision of Detailed Area Plan is inherent in the Structure Plan with some specific purposes. These are:
• Provide basic micro level infrastructure and services in the study area through systematic planning, under the framework of Structure Plan.
• Create appropriate environment to promote economic activities.
• Improve drainage system and protect natural water channels from encroachment.
• Create service centers to promote urban growth.
Detailed Area Plan
Strategic Planning Zones (SPZ)
The logic behind the creation of SPZ is to divide the Structure Plan area into smaller units, expose their problems and opportunities and propose development proposals for amelioration of the problems as well as to promote development.
Combining the areas of common use enables putting them into future uniform land use.
Detailed Area Plan
Indicators in delineating the SPZ are: a) Population Growth and density,
b) Area,
c) Landuse, mainly economic denominator and their heterogeneity,
d) Road Networks,
e) Physical Boundary,
f) Potential development opportunity, and
g) Uniformity of land use.
Detailed Area Plan
Advantages of SPZ:
Perception of stakeholders can be drawn on more specific and accurate basis.
Issues like, infrastructure, social amenities and general expectations can be graphically portrayed/ articulated.
Helps better diagnosis of problems besetting the area.
A useful base for analysis and micro recommendations.
Enables easy and accurate planning (short term investment decisions) which can provide the basis for the capital investment program at local level.
Facilitate, more opportunity for dialogue with local people in order to achieve consensus on detailed local level planning.
Detailed Area Plan
Detailed Area Plan
Detailed Area Plan
Detailed Area Plan
Environmental Improvement (SPZ1)
1. Protection of Existing Hillocks/Tillas: No hillock/tila cutting and deforestation should be allowed in the existing hilly areas.
2. Green Belt along the River and Chhoras: All major chhoras should be excavated, and bank lines of Surma and the chhoras should be marked and fixed. Along the bank line there should be a buffer zone of green belt.
3. Protection of Water Bodies: Water bodies like pond, dighi, chhora and khal should be protected from encroachment and unauthorized land filling as they keep balance between nature and environment.
Detailed Area Plan
Detailed Area Plan
Detailed Area Plan
Detailed Area Plan
