Use

Goal: find as much information as you can on the use of the 11 construction and/or 12 biomass materials and add those to the sublayers of 3.3. Use with the usual upload and tagging procedure.

Construction

For the majority of the construction materials, their use likely takes place for buildings, but be sure to also think about their use in other urban infrastructure such as roads, bridges, tunnels etc. Try to find the amounts that are related to the use of construction materials, such as for building new infrastructure or for renovation activities.

• Amount of new (planned) buildings (in number and square metres), also per typology ideally
  • building permits requested from the city are a good measure for that;
• Material composition per new infrastructure (building and others) typology
  • For buildings and infrastructure, the bill of quantities or architectural plans could be very relevant. A city typically owns or builds many buildings and infrastructure, so they should have this type of data stored.
• Amount of new roads (linear metres)
• Renovation and maintenance amounts / rates (light and deep) (numbers and square metres), also per typology ideally
  • Those can be based on permits, or urban planning plans
  • Try to find those for construction of buildings and roads

Outline of the video

• Consumption and use of materials
• Looking for the materials that are being consumed in the city (from domestic extraction, but also imports)
• What kind of data to look for:
  • Amount of new buildings and roads
  • Number and kinds of renovations
  • Materials composition
    • share of materials for each new building (depending on building typologies)
    • Average material usage in renovation
• M2:26 Examples
  • Brussels building stock, source: p.25 of this report
  • New buildings and building typologies in Brussels, including square meters built; Belgian statistical office: source
  • New residential buildings built per year in Brussels, source
  • Offices observatory Brussels; depicts new office buildings built in Brussels, source
  • Material composition data can be found at planning departments, where they issue permits; These permits also come with architectural materials or the bill of quantity.
  • Properties of the 48 building archetypes used to characterise the building stock of the City of Melbourne, Australia
  • Construction assemblies used in 48 building archetypes representing the current building stock of the City of Melbourne, Australia
• Renovation: try to differentiate between light and deep insulation
• M8:32, Economy-wide material flow accounts (EW-MFA) 2020 questionnaire; This document provides tips on how to calculate data if otherwise you cannot find it.
• In case you don't find information on material composition data for your city, there are studies, usually at least for the country that can also be used.

Biomass

Every city is using biomass materials, so there will definitely be data on use and consumption of those for your city too. Since most materials are related to food, this should be a good place to start overall. In addition, remember that there are also materials on garden&park materials, as well as timber products. The following points are a good place to start.

• Numbers of meals per restaurant (with perhaps the contents of a typical meal), education and health facilities, private canteens etc.
• Average food consumption in households as well as in restaurants; could be found as part of a typical national diet with data from e.g. food guides.
• Household budget survey (how much is spent per food items, but also plants or furniture)

Outline of the video

• Consumption and use of materials
• Central part of the flow diagram, in between manufacturing and wholesale, and waste collection
• You start consuming when you eat food or use biomass in another way
• Consider all different places where people consume food and use biomass
• Goal: Find all those places and then add them up
• M2:22, Examples
  • Consumption in Madrid, source
• Household budget survey (HBS);
  • same nomenclature (COICOP) is used by all countries;
  • example documentation
  • example numbers
  • Biomass waste, Table 3 in this document
  • Sometimes this cannot be found on the city level, but instead on the provincial or a higher NUTS level
  • Tells you how much money people spend on something. You can then convert that from Euros to tonnes, with mass/Euro spent. Info can also be found in Annex 6 of the EW-MFA documentation. Source of Economy-wide material flow accounts (EW-MFA) - annexes of the 2020 questionnaire
• M9:34, other sources: studies done for your city, academic papers;