Transcript Totem Lake Redevelopment Analysis & Visualization

Totem Lake Redevelopment
Analysis & Visualization
Project Team
• Suzanne Palmason
– Project Manager
– GIS Analyst
• Korosh Dabestani
– GIS Analyst
• Racheal Jones
– 3D and Visualization Analyst
– GIS Analyst
• Michael Horner
– 3D and Visualization Analyst
– GIS Analyst
Sponsor
City of Kirkland
• Xiaoning Jiang
• GIS Administrator
• Eric Shields
• Director of Planning and Community Development
• Dorian Collins
• Project Planner
The Original Idea
3-D Model Visualization For Totem Lake
Commercial District
– Thumbnail sketches
– 3-D views of various development options
• Viewsheds, streetscapes, transportation
connections, environmental mitigation, etc.
Totem Lake Mall
Totem Lake Mall
Totem Square
FOR SALE
Proposed Road from Slater to 120th (crossing 124th)
Totem Lake Mall
Totem Square Shopping Center
Problem Statement Evolution
The Original Proposal
Description:
The Project Plan Problem Statement:
•
Identify areas likely to redevelop
•
Assess the current zoning codes capacity to
absorb targeted growth.
•
Communicate potential development scenarios
to stakeholders.
3-D Visualization
What they really wanted to know:
•
How does the redevelopment capacity change if we adjust the
assumptions about the improvement to land value ratio used as a
predictor of redevelopment?
•
What can you do with 3-D tools to help visualize a proposed road and
potential redevelopment in the Totem Square area?
Phase 1:
Redevelopment
Capacity Analysis
The Ratio:
Two houses in the same neighborhood, with same lot size.
Property is in a zone that allows four dwelling units on a lot this size.
Improvements Value
Land Value
Ratio
$75,000
$250,000
0.3
Improvements Value
$250,000
Land Value
$250,000
Ratio
1
Which one is more likely to be redeveloped?
Methodology
• Join Parcels layer with Assessor data tables
• Identify redevelopable parcels based on criteria provided
by City of Kirkland:
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•
•
Exclude parks and government institutions
Exclude condominiums
Parcels completely within wetland & stream 50 foot buffer
• For parcels that intersect wetland buffer: calculate % of
parcel within buffer
•
Dissolve contiguous parcels with common
ownership
Model #2
• Use zone-specific assumptions to calculate redevelopment capacity
Totem Lake Redevelopment Capacity Analysis Results
If all parcels identified as redevelopable are developed
to their maximum capacity, what’s the capacity for
dwelling units and jobs?
How does the capacity change if we increase the
improvement value to land value ratio used to select
redevelopable parcels?
Totem Lake Redevelopment Capacity
16000
14000
12000
10000
Dwelling Units
8000
Jobs
6000
4000
2000
0
<.5
<=.75
<=1
<=1.5
<=2
<=2.5
Improv ement Value / Land Value Used to Select Redev elopable Parcels
Totem Lake Redevelopment Capacity Analysis Results
Zone TL5 Scenario Variations
Commercial & Industrial Redevelopment Capacity
25000
20000
J o bs
These charts demonstrate
the impact of changing
assumptions for Office and
Residential FAR within the
TL 5 zone. Office and
Residential FAR values for
all other zones remain
consistent in each
scenario.
15000
10000
5000
Office
0
TL 5
<.5
Residential
FAR
FAR
Scenario 1:
1
0.6
Scenario 2:
1.6
0
Scenario 3:
0
1.6
<=.75
<=1
<=1.5
<=2
<=2.5
all
<=2.5
all
Improvement Value / Land Value
Used to Select Redevelopable Parcels
Residential Redevelopment Capacity
8000
D w e ll i n g U n it s
TL 5
7000
6000
5000
4000
3000
2000
1000
0
<.5
<=.75
<=1
<=1.5
<=2
Improv ement Value / Land Value
Used to Select Redev elopable Parcels
Model Builder Pros & Cons
Advantages:
• Visual record of logic
• Easy for team to review
steps and provide
feedback
• Easy to change capacity
assumptions & run “what
if” scenarios
• Ability to delete
intermediate data (save
storage space)
Challenges
• Multiple steps to join
tables
• Select by location
requires feature layer
input (no shapefiles)
Risks and Challenges
– Each review with sponsors uncovered new
guidelines for parcels to exclude and
forecasting assumptions
– Number crunching using GIS
– Planning terminology
Phase 2:
3-D Visualization
Methodology
•The City of Kirkland asked us to model a potential
redevelopment scenario in 3D using ArcScene and Google
Sketchup.
• Kirkland has design guidelines for future Totem Lake
redevelopment.
• We used these guidelines to model a
redevelopment scenario in
District TL 6A (map).
• These guidelines call for:
• Commercial uses
•Multi-family housing
• The extension of NE 120th Street
Methodology
Two Main Approaches
When using ArcGIS and Google
Sketchup to create scenes there are
two basic processes:
•ArcGIS to Sketchup
•Sketchup to ArcGIS
ArcGIS to Sketchup
• To export feature classes, TINs or
rasters from ArcGIS to sketchup you
need the ArcGIS (beta) plugin. This
tool appears after being activated.
–Only works in ArcGIS 9.2
ArcGIS to Sketchup
ArcGIS to Sketchup
ArcGIS to Sketchup
ArcGIS to Sketchup
Model Examples
Sketchup to GIS
How do you bring a sketchup model
back into GIS?
• Export model as an Autodesk .3ds,
3D modeling file
(requires professional
version of Sketchup)
Sketchup to GIS
•Import .3ds file as an ArcGIS Style
(Tools/Style Manager/Style Manager)
Sketchup to GIS
• Create new Marker Symbol
Sketchup to GIS
• Assign Marker Symbol as a point symbol
Note: You will need to convert polygons to points using ArcToolbox (requires ArcInfo)
Sketchup to GIS
• If you need to change an attribute of your
symbol after seeing it in the scene, you
can do that in Style Manager.
• Getting your Marker Symbol
sized and aligned correctly
will likely require a series of
adjustments.
Risks and Challenges
• Schedule (not enough time to complete
the phase)
• Access to resources
– Knowledge about the process (best practices,
challenges, what’s doable)
– Software
• Only have access to ArcInfo in UW lab
• Don’t have access to SketchUp Pro
(downloaded trial multiple times)
Risks and Challenges
• Technological Issues
– ArcGIS 9.3 not supported by the Sketchup 'Export to
ESRI multipatch' and is not seamless in 9.2.
– ArcScene is buggy.
• Textures would not stay on polygons and lines.
• The 3D library objects, after adding a new menu, would
disappear and come back randomly.
• Error messages and crashes occur constantly.
• File corruption due to stability problems.
– Takes a lot of power to run a 3D model smoothly
– Hard to make models align with boundaries in the
scene
– Difficult to navigate around and get good shots.
Risks and Challenges
– Limited functionality in ArcScene
• Does not allow for detailing
• Must create your own data to assign character to a
scene (unless it is imported from SketchUp)
THIS TAKES FOREVER!
Lessons Learned
Look for work tracks
that can happen in
parallel.
Creating a 3D
scene takes time!
Details are
important for a
good show.
(Requires a good
understanding of
dependencies!)
Ask sponsors for
background info
& reference
materials.
It’s challenging to build
a plan for something
you’ve never done
before. Get input, and
keep revising as you
go.
For 3-D
visualization,
access to the full
software packages
are important.
Highlights
• Learned some new functions:
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–
–
–
–
–
–
create random points
feature to point
convert 2D data to 3D data
create 3D data
Assigning textures and importing 3D objects
Geoprocessing with Model Builder
Data conversion
• Provided City of Kirkland with
reusable models for capacity analysis