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Greater Blanchardstown Initiative - examination of urban permeability in the Greater Blanchardstown Area
 

Greater Blanchardstown Initiative - examination of urban permeability in the Greater Blanchardstown Area

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A presentation on the Greater Blanchardstown Initiative (examination of urban permeability in the Greater Blanchardstown Area) given at the Compass Informatics Annual Conference in Dublin on 25th ...

A presentation on the Greater Blanchardstown Initiative (examination of urban permeability in the Greater Blanchardstown Area) given at the Compass Informatics Annual Conference in Dublin on 25th June, 2009

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  • Ideal PRD = 1 Acceptable PRD = 1.5 This is not untypical for Blanchardstown.
  • If we look closely at the mode split in Blanchardstown we see a similar mix of the modes to that of the national average. Obviously the motorcar dominates, there is a high level of car passengers – which should be interpreted as Children. There is a low level of Bus, Minibus and Coach users. The bicycle has a tiny slice of the pie.
  • Ciaran has explained how we put the community survey and Powcar data sources to use. GIS was used in part analysis of these. The next section is very much the backbone GIS analysis to the project. We knew we lacked accurate data to do any real analysis for this stage. In order to progress, we commissioned CI for 4 months to carry out a detailed survey on the ground. They surveyed on a bike and recorded features which were required to look at permeability/accessibility in the study area. On which we carried out analysis. Key Neighbourhood services - schools, shopping areas – parks - playgrounds ******************************************************************************************************************************************* While all the elements of the study were in GIS this next part is very much the GIS backbone to the project. In order to progress the project we commissioned Compass Informatics for 4 months to carry out a detailed survey on the ground. They headed out on a bike and recorded features which made up a network On which we carried out analysis. This was done as we lacked accurate and complete data of the study area.
  • Delineate an area according to the number of houses which fall within it.. Here 1000 houses in blue area.
  • Todd Randall documented a method for measuring permeability Measure of how direct it is for people to get to their local service. 1 is the ideal answer – 1.5 consisted acceptable PRD
  • Todd Randall documented a method for measuring permeability Measure of how direct it is for people to get to their local service. 1 is the ideal answer – 1.5 consisted acceptable PRD
  • Look at whether the PRD is above or below 1.5 , is their journey direct and also is I long above or below 700m
  • NOTE: NB – this PRD included Desire lines and high difficulty.
  • What we see here is…..
  • What we see here is…..

Greater Blanchardstown Initiative - examination of urban permeability in the Greater Blanchardstown Area Greater Blanchardstown Initiative - examination of urban permeability in the Greater Blanchardstown Area Presentation Transcript

  • Greater Blanchardstown Initiative: An examination of urban permeability in the Greater Blanchardstown Area Claire McIntyre and Ciarán Staunton
  • Fingal County Council
    • “ To improve the quality of life for the people we serve”
    • Housing
    • Transportation
    • Water Services
    • Planning
    • Environment
    • Waste Management
    • Economic Development
    • Community, Recreation & Amenities
  • Fingal County Council
    • Challenges
      • Expanding the role of Local Government
      • Pace of growth
      • Complexity of growth
      • Demand for additional services
      • Improving service delivery
      • Capped/falling staff numbers
  • Fingal
    • Established in 1994 as a result of the Local Government (Dublin) Act
    • Fingal is sometimes known as “North County Dublin”
    • It has a mix of outer suburbs of Dublin, large towns, smaller rural villages and rural hinterland
    • It has 88km of coastline and borders Meath and Kildare (west), South Dublin (south) and Dublin City
    • It is the 3 rd most populous county in the state after Dublin City and Cork County
  • Population
    • Blanchardstown
    • Castleknock
    • Swords
    • Balbriggan
    • Skerries
    • Rush
    • Lusk
    • Donabate
    • Howth/Sutton/Baldoyle
    • Santry
  • The Task
    • Council Management Team set a Terms of Reference:
    • Examine the permeability of residential, commercial and industrial estates, with regard to physical barriers and design problems
    • Verify the existence and coverage of public transport services and stops
    • Consider community safety issues connected to permeability especially where safety conflicts, or is perceived to conflict, with permeability
    • Analyse locations of key service points and how accessible they are
  • Definition: Permeability
    • Working Definition:
    • “ Permeability should be understood as the relative ease with which people may get around and through various types of Urban Development.”
  • Project Description
    • Permeability is the main concern
    • Focus on Blanchardstown, our biggest urban area
    • Multidisciplinary project team: Engineering, Planning, Architecture, Community Development, Heritage, Information Technology, Statistical Analysis
    • GIS used as a modelling environment for all investigations decisions
  • Location Map
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  • Long-term growth of Blanchardstown
  • Permeability: The Challenge on the Ground
  • What do you see? Vegetation disrupted and wall cap damaged
  • What do you see? Vegetation disrupted and wall cap damaged Gaps made in fence for shorter journeys
  • What do you see? Vegetation disrupted and wall cap damaged Gaps made in fence for shorter journeys Improvised access across high wall
  • What do you see? Vegetation disrupted and wall cap damaged Gaps made in fence for shorter journeys Improvised access across high wall High difficulty climb
  • What do you see? Vegetation disrupted and wall cap damaged Gaps made in fence for shorter journeys Improvised access across high wall High difficulty climb Wall capping removed
  • What do you see? Vegetation disrupted and wall cap damaged Gaps made in fence for shorter journeys Improvised access across high wall High difficulty climb Wall capping removed High wall disables permeability
  • Definition: Desire Line
    • Working Definition:
    • “ Desire Lines are indications of a demand for passage through an urban area. Generally they refer to pedestrian behaviour where passage is not ‘officially’ facilitated, or is prevented in some way but used nonetheless”
  • Policy Influence: Sustainable Communities Sustainable Communities are places where people want to live and work, now and in the future. They meet the diverse needs of existing and future residents, are sensitive to their environment, and contribute to a high quality of life. They are safe and inclusive, well-planned, built and run, offer equality of opportunity and good services for all Delivering Homes Sustaining Communities: Department of Environment, Heritage and Local Government
  • In-depth study
    • Community Survey
    • (ii) POWCAR (Census 2006)
    • (iii) Physical Data Capture
    • (iv) Public Transport Study (Bus)
    • A community survey was required because we wanted to know how people on the ground perceived the issues we are considering
    • Fieldwork carried out in May 2008 using doorstep interviews
    • Quota sample used
    • All respondents were aged 16+ living in the Blanchardstown area
    • In all, 583 surveys were carried out
    • Less than -/+ 1% margin of error
    (i) Community Survey
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  • Perception of Functional Levels in Area (Q.16) (Base: All Greater Blanchardstown Residents) Too many Too Few CCTV and public transport links are prominent desires. Residents not seeing the advantages of Roundabouts over traffic lights at junctions. Pedestrian Crossings Roundabouts Foothpaths Foothpaths not adjacent to roadways Alleyways Streetlights & security cameras School wardens Traffic calming measures Public transport links Heavy/thick planting Walls/fences Cycle Lanes Closed alleyways Bus Gate Just Right 55 54 76 70 69 49 77 48 50 65 68 57 71 55
  • (ii) Powcar 2006
    • Place of Work Census of Anonymised Records
    • An analysis of POWCAR was necessary to learn about the behaviour especially commuting behaviour of the people in Blanchardstown
    • Q31 and 32 on the Census form capture the location where people work and this is re-coded to
      • County and Electoral Division
      • Enumerator Area
      • Approximated grid of 250m x 250m
    • We can also see SEX, SEG, INDUSTRY, MODE OF TRAVEL and ORIGIN
    • We are lucky that Blanchardstown is covered by Enumerator Areas
  • Modes in Blanchardstown Daily mode of transportation of persons 5 years and over
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  • In-depth study
    • Community Survey
    • (ii) POWCAR (Census 2006)
    • (iii) Physical Data Capture
    • (iv) Public Transport Study (Bus)
  • (iii) Physical Data Capture
    • Road & Footpath network
    • Permeability Facilitators
    • E.g. Bridges, walkways, street lights, pedestrian crossings
    • Desire Lines
    • Physical features which can prevent permeability
    • E.g. heavy planting, walls & fences, closed alleyways
    • Neighbourhood Level Services
    • E.g. Schools, bring banks, playgrounds etc.
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  • (iii) Physical Data Capture
    • Straight line Analysis Example
  • (iii) Physical Data Capture
    • Catchment Area along ‘formal’ network
  • (iii) Physical Data Capture
    • Catchment Area along ‘informal’ network
  • (iii) Physical Data Capture
    • Catchment area encompassing a number of houses
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  • (iii) Physical Data Capture
    • Randals PRD (Pedestrian Route Directness)
    PRD = Route Distance Geodetic Distance
  • (iii) Physical Data Capture
    • Randals PRD (Pedestrian Route Directness)
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  • (iv) Public Transportation Module
    • ILTP study of existing public transport services and potential new services
    • - a specialist transportation study was required
    • - objective to identify the priorities for new routes
  • Existing Buses
  • ILTP Proposed Buses
  • What we learned
    • GIS is a powerful tool for demonstrating and analysing physical evidence of issues
    • Permeability measures accessibility to a range of services helping us to decide about service locations in the future
    • Combining sources of data: POWCAR, Location-based info., permeability calculations and community attitudes gives us greater insights into the reality and complexity of problems and challenges in Blanchardstown
    • Interdepartmental , cross-disciplinary working enabled the team:
      • To have a more integrated understanding of real local problems
      • To appreciate that Departments have overlapping concerns and challenges which can be resolved better by working together
      • To think strategically and co-operatively about how to affect change
  • Greater Blanchardstown Initiative: An examination of urban permeability in the Greater Blanchardstown Area Claire McIntyre and Ciarán Staunton
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