The slides for this presentation can be found here.

Outline of the video

• Material stock: very different from what we have been discussing before
• What is material stock: something that sits in the city for a long period of time, generally longer than a year. They also have an environmental impact.
• Either produced in the city, or comes in as a flow and stays. After some time it leaves the city as a flow again.
• built infrastructure: buildings, roads, railroads, pipes; electronics, vehicles; biomass: livestock, wood, stored grain;
• It should be part of the economic system. We don't collect info on birds for example.
• M6:52, types, summary of what we are interested in
  • Buildings
  • Roads
  • Vehicles
  • Biomass
  • Other specific products/materials present > 1 year
  
  
• M7:30, relevance, why do we care about this
  • Stocks&flows are interwoven
  • Holistic understanding
  • Urban mining
  
  
• M9:25, what to look for?
  • Quantity (weight);
    • but sometimes you will only find number of something or length (e.g. road network)
    
    
  • Material composition
  • Age
    • How old
    • What is expected lifetime
    
    
  • Growth
    • Get data for a number of years
    • Or get an idea at which rate this is growing
    
    
  
  
• M11:13, types of information
  • Building stock
    • Building-based shapefile
    • Total built footprint (surface area)
    • Building details (height, number of floors, materials used, age, etc.)
    • Studies (building types, specific materials, etc.)
    • Data on number of buildings, locations etc.
    • Bill of materials for key infrastructure (used by architects as an input list for buildings)
    
    
  • Vehicles
    • Vehicle count
    
    
  • Biomass
    • Animals (livestock)
    • Trees
    
    
  • Material stock
    • Studies
    
    
  
  
• M13:46, examples
  • Nickel-Cadmium batteries in Cape Town
  • Copper in use, in Cape Town
  • Number of registered vehicles per province
  • "Prospecting the urban mine Amsterdam" PUMA study
  • Spatial datasets of Cape Town
  
  
• M17:36, Sources
  • Cadastre
  • Vehicle registration agency
  • Local government reports
  • Google Scholar
  • Keywords: building footprint, building types, vehicle count