PARAMETRIC ANALYSIS
Finding the hidden story of the urban environment
APPROACHES TO URBAN ANALYSIS 1. Visualizing Data Sources Seattle’s Development Capacity Viewer
2. Interpreting Code University District Re-zone Analysis
3. Comparative Analysis Devanahalli, India
4. Testing Building Forms Feasibility Study Tool
5. Tools
VISUALIZING DATA
Seattle Development Capacity Viewer
SEATTLE 2035 DEVELOPMENT CAPACITY REPORT Where to build new jobs and houses Where to improve existing transit system, Where to apply capital improvements to utilities, sidewalks and libraries. Since the database references parcels, and those parcels can be cross-referenced with a map of the city, it is fairly easy to create a map of Seattle which reveals the development potential in a more intuitive manner.
DETERMINING GROWTH POTENTIAL Seattle has a database of every parcel in the city boundaries. Each parcel entry has information on the buildings on that parcel. •
Floor area
•
Height
•
Zoning
•
Assumed usage mix (Commercial/Residential/Retail)
VISUALIZING THE DATA Firstly, we divide the city into 200’x200’ cells, roughly the area of a standard block. Then we associate the parcels with the cell it is inside. From there we can visualize the data in a variety of ways.
MULTIFAMILY ZONE
NEIGHBORHOOD COMMERCIAL
DOWNTOWN
JOBS
TOP 25
INTERPRETING CODE
University District Re-zone Analysis
REZONING FOR DENSITY GGLO was asked to help Seattle analyze their new zoning rules for the University District. Specifically, they wanted to know if their new zoning rules would encourage density by making it possible to build residential towers in the neighborhood.
CREATING RULES Start with a typical parcel study.
CREATING RULES Start with a typical parcel study. Find assumptions.
CREATING RULES Start with a typical parcel study. Find assumptions. Create a set of rules.
CREATING RULES Start with a typical parcel study. Find assumptions. Create a set of rules. Apply rules to other parcels.
CREATING RULES Start with a typical parcel study. Find assumptions. Create a set of rules. Apply rules to other parcels. Test.
CREATING RULES Start with a typical parcel study. Find assumptions. Create a set of rules. Apply rules to other parcels. Test.
Test.
CREATING RULES Start with a typical parcel study. Find assumptions. Create a set of rules. Apply rules to other parcels. Test.
Test.
Test.
COMPARATIVE ANALYSIS
Devanahalli, India Urban Planning
Connectivity Graph
Proximity to Hospital
Proximity to Open Space
Proximity to School
Connectivity Graph
Proximity to Hospital
Proximity to Open Space
Proximity to School
TESTING BUILDING FORMS
Feasibility Study Tool
FEASIBILITY STUDIES • Little design
FEASIBILITY STUDIES • Little design • Lots of numbers
SAMPLE SITE Requirements to create forms: •
Parcel boundary
•
Adjacent roads, alleys, and lots
•
Zoning Constraints
•
•
FAR
•
Height
•
Setbacks
Design Directed Constraints •
Floor to Floor Height
•
First Floor Height
USING THE PARCEL TO GENERATE FORMS Each side of the parcel is used to created a module for the building options.
ARRANGEMENT RULES
BUILDING SHAPE
BUILDING SHAPE
COMPUTERS ARE TAKING OUR JOBS!!! Robots toasting to another job taken from a human.
TOOLS Rhino + Grasshopper 3D modelling program and parametric plug-in.
GIS Geographic Information System.
three.js Easy-to-use 3D interface for browsers.
TOOLS Excel using VB for applications Spreadsheet with Microsoft Development Language
DO I NEED TO LEARN TO CODE? Yes…. and no.
BUY SOFTWARE OR DIY Purchase Software
Build a tool
Pros:
Pros:
•
A (hopefully) well developed solution
• You know how it works
•
Compatible with other users
• Does exactly what you need
•
If it breaks, someone else fixes it
• You are solely responsible for the results
Cons:
Cons:
•
Might not fit your use
• Takes time to develop
•
Might not exist
• May no work well with others (UI and compatibility) • You are solely responsible for the results