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CorPlan: Place Based Scenario Planning Tool
Renaissance Planning Group Chris Sinclair, AICP
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Overview Background CorPlan methodology Regional scenario case study
GIS polygon layer (canvas) Community data table (paint) Allocation (design) Summary (admire your work) Regional scenario case study
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Background
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Land Use Modeling Methods
Agent base modeling – Community Viz Behavioral approach – Urban Sim Policy oriented approach – What If? Land use suitability approach – LUCIS
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Limitations of Current Methods
Inadequate consideration of site design Inability to telescope among scales Black box versus intentional design Limited visualization ZDATA1 SFDU SFPOP MFDU MFPOP ZDATA INDEMP COMEMP SEREMP
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Searching for Solutions
Integrate design, data and scales Intentional design, not black box Detailed, comprehensive Information ZDATA1 SFDU SFPOP MFDU MFPOP ZDATA INDEMP COMEMP SEREMP
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CorPlan : A GIS Application
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CorPlan Workflow Polygon Trip Generation Layer (Canvas)
ArcMap (Allocation) Socio / Land Use Data Summary Transportation Model Socio / Land Use Data Export Community Data (Paint)
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CorPlan Workflow Transportation Model Polygon Trip Generation
Layer (Canvas) Trip Generation ArcMap (Allocation) Socio / Land Use Data Summary Transportation Model Socio / Land Use Data Export Community Data (Paint)
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Base Polygon (Canvas) Ability to work at differing scales
Development pods – site analysis Parcels – site to regional analysis Polygrids – regional / corridor analysis Community data assigned to polygons Data describes development characteristics Data scaled to size of polygon
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Site Planning Development pods are geographic allocation basis
Quickly test site plan options
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Regional Analysis Divide region / corridor into equally sized grids
Assign community data to each grid Grid data summarized by larger polygons (i.e., TAZs) Sample polygon layer (1/10th acre polygrid)
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Classifying Polygons Undevelopable - polygons “masked” and assumed unchanged Environmental constraints Rights of way Newly developed, stable development Redevelopable - assignments are factored to a portion of development potential Developable - assignments assigned at full value
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Classifying Polygons Sample polygon layer (1/10th Acre Polygrid)
Undevelopable existing uses Developable land Undevelopable environmental land Sample polygon layer (1/10th Acre Polygrid)
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CorPlan Workflow Transportation Model Polygon Layer Trip Generation
(Canvas) Trip Generation ArcMap (Allocation) Socio / Land Use Data Summary Transportation Model Socio / Land Use Data Export Community Data (Paint)
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Relational Databases Lot Data Community Element Reference LOT Type
Development characteristics based on user input Development characteristics based on Lot Type mix Characteristics factored to polygon size Lot Data LOT Type Category Household Type Residential Ratio Commercial Ratio Service Ratio Industrial Ratio . Community Element CE Type LOT Type Proportion Redev. Factor . Reference CE Type Building SQFT Residential Ratio Commercial Ratio Service Ratio Industrial Ratio .
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Community Data Detailed characteristics of differing building and development types Data levels Lots Community elements Lot type composites for geography larger than lot Recommended scales Blocks – around 10 acres Pedestrian sheds – around 40 acres Place sections – around 160 acres Places – around 640 acres (square mile)
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Community Data Levels / Scales
640 Acres 160 Acres 40Acres 10 Acres Block Pedestrian shed Lot Place section Place Community Element Scales
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Lot Building Data Lot Library of building types Lot Characteristics
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Defining Lot Building Types
Any type of building can be defined by data Lots without buildings can be defined
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Community Element Data
Lot building data are “building blocks” for areas larger than lots (community elements) Larger areas based on analysis scales Possible scales Blocks Pedestrian sheds Place sections Places
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Community Element Data
Lot types 640 Acres 160 Acres 40Acres Library of community element types Library of building types
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Density/Intensity Check
Quick check of community element composition
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Designing Community Elements
Option 1 – Use CorPlan Design Module
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Designing Community Elements
Option 2 – Use design software, such as Sketch Up, and import to CorPlan Design Concept Underlying lot and building polygons exported to Corplan
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Designing Community Elements
Option 3 – Field inventory of existing place Dwelling Units/Acre 5 Non-Residential FAR 0.72 1/4 mi Non-Developable Developable Park 2 % SF House 3 % Retention Apartment 12 % Road 15 % Mixed Use 6 % Civic Retail Parking 5 % Office 28 % Total 39 % 61 % GRAND TOTAL 100 %
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Community Element Library
Library is “palette of colors” used to paint polygons in polygon layer Number of differing community elements is unlimited
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CorPlan Workflow Transportation Model Polygon Layer Trip Generation
(Canvas) Trip Generation ArcMap (Allocation) Socio / Land Use Data Summary Transportation Model Socio / Land Use Data Export Community Data (Paint)
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Allocating Community Elements
Step 1 – Select polygons for allocation
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Allocating Community Elements
Step 2 – Select community element to allocate
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Allocating Community Elements
Step 3 – Program scales selected community element data to selected area and updates study area database
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Modification of Allocation
Remove allocation Re-assign to another building type / community element Modify a community element
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CorPlan Workflow Transportation Model Preparing Polygon
(Canvas) Trip Generation ArcMap (Allocation) Socio / Land Use Data Summary Transportation Model Socio / Land Use Data Export Building Community Data (Paint)
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Reviewing Allocation Track allocation overall or in sub-areas
Step 1 – Select areas to summarize
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Reviewing Allocation Track allocation overall or in sub-areas
Step 2 – Review summary Able to compare with preset target
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CorPlan Workflow Transportation Model Polygon Layer Trip Generation
(Canvas) Trip Generation ArcMap (Allocation) Socio / Land Use Data Summary Transportation Model Socio / Land Use Data Export Community Data (Paint)
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Exporting Allocation Summarize allocated data by any geographical boundary (TAZ or census block) or community element Export summarized data in DBF for further analysis Generate input data for transportation modeling (ZDATA)
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Exporting Allocation Step 1 – Select summary level (i.e., traffic analysis zones) Step 2 – Select area to export Step 3 – Select fields to export
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CorPlan Application Regional Scenario Planning
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Project Overview 2035 Jacksonville, FL Long Range Transportation Plan – assess future transportation needs Scenario planning –test impacts of different development patterns & transportation needs
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Community Element Inventory
Example: City Element Mix of uses Buildings 2 – 6 stories Prototypes Downtown St. Augustine Edge of Downtown Jacksonville CE Design Model
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Scenario Workshop Dot map game
Community element dots with differing values provided to participants Urban Suburban Rural Target population total provided to all groups Place dots on regional map until target reached
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Workshop Maps become Scenarios
Group maps differed in growth strategy Each group described the strategy used to choose and place dots Maps become basis for scenarios
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Conversion to GIS Data Dot game maps translated into CorPlan scenarios
Scenarios used the same control total for “apples to apples” comparisons
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Scenario Comparison Land use and access comparisons
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Scenario Comparison Travel demand comparisons
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3D Visualization Easy to create 3D models based on the community elements were created for key locations in region Models helped link colors on map with design characteristics
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Summary Integrative Intentional Informational Design and data
Across scales Intentional User in control of design Simulation models can verify Informational Export to 4 step travel demand models Export to fiscal impact / environmental models
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