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Leibniz Institute of Ecological Urban and Regional Development, g.schiller@ioer.de. Georg SCHILLER , Thomas LÜTZKENDORF, Karin GRUHLER, Ines LEHMANN, Kai MÖRMANN, Florian KNAPPE, Nadine MUCHOW and Jörg HENNERSDORF.
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Leibniz Institute of Ecological Urban and Regional Development, g.schiller@ioer.de Georg SCHILLER, Thomas LÜTZKENDORF, Karin GRUHLER, Ines LEHMANN, Kai MÖRMANN, Florian KNAPPE, Nadine MUCHOW and Jörg HENNERSDORF Material Flows In Buildings’ Life Cycle And Regions- Material Inventories To Support Planning Towards Circular Economy
Built environment dominates the anthropogenic material stock • More than 90 % of all materials used in durable goods are induced by buildings • 94% of building materials are bulk non metallicmineral materials (Sand, Stone, Clay) (Urban) Material Consumption 1309
Lessthan 40% ofconstructionanddemolitionwasteisrecycled disposal recovery landfillconstruction 1000 t backfilling recycling landfill soil material 4.185 83 % 10 % 4 % 3 % constructionwaste 4.350 32 % 64 % 2 % 2 % total 8.535 57 % 38 % 3 % 2 % Sachsen 2012, Daten: StaLa SN 1309
Changing Input / Output Ratio based on GruhlerandDeilmann 2016 1309
Concepts to provide information on the building level and regional level source: https://www.dreso.com/de/presse/presseinformationen/2015/eu-forschungsprojekt-buildings-as-material-banks-startet/ (source: van der Voet et al. „Prospectingthe urban mineof Amsterdam“) (source: Munaro et al. „Proposal of a building material passport and its application feasibility to the wood frame constructive system in Brazil “) 1309
Information for stakeholders • Who aretheaddressees? Which planning tasks are directly related to questions of resource management of building materials? • Whatinformation do theyneed? Whatinformationwithregardtocontentandspatialresolution? • Howcaninformationbeprovided? Which existing information bases can be integrated and merged into a material cadastre? 1309
Structure • (Background) • Conceptual approach • Needs for Information • Conclusions and outlook 1309
DualisticApproach:BuildingsandRegions material inventoryforbuildings material cadastreforbuildingstocks • Conceptual designof material inventoriesand material cadastresto strengthen planning towards circular economy • Alignedwithpracticalneeds typological building characteristics datasourcesformaterialsbuilding datasourcesformaterialssettlement/region guidelineactorssurvey documentationrequirements building documentationrequirementssettlement/region degreeof differentiation potential solutionssettlement/region potential solutionsbuilding validationmodelregion validationpracticepartners casestudy evaluationconsidering relevant actors evaluationconsidering relevant actors comprehensive evaluation 1309
Buildings andregions: different perspectives Single buildingsarebeingexaminedalongtheirlifecycle Lützkendorf(KIT) 2019 1309
Buildings andregions: different perspectives year t = x The material stock on thecadastrallevel in a specificyearorperiod Single buildingsarebeingexaminedalongtheirlifecycle Lützkendorf(KIT) 2019 1309
Material Categories 1309
Structure • Background • Conceptual approach • Needs for Information • Conclusions and outlook 1309
Information demand related to material stocks in regions 1309
Case studies (cadastre) Discussions and workshops to specify information needs and link them to planning tasks In order to • Give an idea what kind of information could be provided in principle(free available data – statistics /Geodata on building stocks and flows; material composition indicators (MCI) (http://ioer-bdat.de/en/) • specify the needs of the actors 1309
Material stock bybuildingtypes MFH SFH 1309
Mapping material flows – newconstructionofresidentialbuildings 1309
Using 3D Data (LOD1) toestimatethematerial stock • Clarificationofstrengthsandweaknessesof different approaches • Options andneedstoimprovetheapproaches GIS-Polygons MCI of Building Types Material Stock 1309
Small scale material stock • Increasing spatial resolution goes along with increasing uncertainty and reliability 1309
Conclusions • Concepts for material inventories and cadastres that are not aligned with the practical needs of the addressees are not contributing to a more circular economy in the construction sector -> I we want stakeholders make use of the information, we need to meet their requirements (or help them to recognize the requirements) • The presented case study approach helps to identify and specify actual information needs of different actor groups and links to their respective planning tasks. 1309
Outlook Next steps: • Describingandtestingof „bestneeded“ approachesconsideringoverlappingsbetweencadastre (region) andinventories (buildings) • Determination of a scalable material typologies (The information needs of actors operating on the building level are more differentiated than of those on the regional level) • Exploration of the inclusion of energy-related parameters such as grey energy and emissions 1309
Georg SCHILLER g.schiller@ioer.de 1309