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Predicting future waste amounts from demolition activities...
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Predicting future waste amounts from demolition activities in the City of Vienna Fritz Kleemann , Jakob Lederer, Johann Fellner Research Center of Waste and Resource Management CD Laboratory for Anthropogenic Resources ISWA World Congress 2015 07.09.-09.09.2015, Antwerp (BE)
Transcript of Predicting future waste amounts from demolition activities...
Predicting future waste amounts from demolition activities in the City of Vienna Fritz Kleemann, Jakob Lederer, Johann Fellner Research Center of Waste and Resource Management CD Laboratory for Anthropogenic Resources
ISWA World Congress 2015 07.09.-09.09.2015, Antwerp (BE)
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Background
- Buildings greatly contribute to the material turnover in urban systems
- About 22% of waste flows nationwide (Austria) are related to construction and demolition (excavation material excluded)
- High potential to save landfill space and primary resources through recycling
- Knowledge about material flows in this system is limited
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Case studies I
- Investigation of the material composition of buildings prior demolition - Comparison with official reports on waste disposed
- Generation specific material values for different building categories
- Kleemann et al. (2014) Building Research and Information
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Case studies II
• Different reasons for discrepancies • Estimation of waste flows not possible based on this data!
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Resource cadastre
- Resource cadastre - Gives information about the total material stock in buildings
- Combined with data about the demolition activity, current and future waste streams can be estimated
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Combination of data
Area & height of buildings
Utilization & construction period of buildings
Case studies - analysis of documents - on-site investigation
Demolished buildings - analysis of construction plans
Literature
New buildings - final bills - LCA Data - construction plans
Information about the building structure (GIS - geographical information system)
Information about the material composition of different building types
Period of construction
Utilization Mineral materials
Organic materials
Metals Total
-1918 residential 380 17 3 400
commercial 360 3 3 366 industrial 270 5 7 282
1919-1945 residential 450 11 6 467
commercial 270 7 6 283 industrial 320 30 3 353
1946-1976 residential 420 5 10 435
commercial 350 6 6 362 industrial 340 - 13 353
1977-1996 residential 430 7 12 449
commercial 380 1 13 394 industrial 170 - 15 185
1997- residential 450 5 13 468
commercial 320 6 10 336 industrial - - - -
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Material stock
385.000.000 [t] 210 [t] pp
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Material stock per person
Bricks & Mortar 93 [t]
Concrete 85 [t]
Wood 4 [t]
Steel 3.7 [t]
3,9m 3,3m 2m 0,8m
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Demolition activity
- Data from the building authority - Address of building
- notification present
- Data from own observations - To cross check if all buildings are represented
- Data from remote sensing - Image matching
- Compare height models of building stock based on yearly orthophotos
- Data from surveying - Wrecking companies
- Recyclers
- Landfill operators
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Relevance & Outlook
- Possibility to generate reference values for single buildings being demolished
- Information about appearing waste flows on a municipal level (Vienna)
- Prediction of waste flows from demolition activities
- Resource potential of waste flows (quantitative & qualitative)
- Further analysis of the demolition activity (remote sensing methods, statistics)
- Further enhancement of database behind the resource cadastre
- Involvement of wrecking and recycling companies
