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To weigh or not to weigh. Recommendations for communicating aggregated results of buildings LCA

Gomes, V.; Pulgrossi, L.; Gomes Da Silva, M.; Balouktsi, M. 1; Lützkendorf, T. 1; Frischknecht, R.
1 Ökonomie und Ökologie des Wohnungsbaus (OEW), Karlsruher Institut für Technologie (KIT)

Abstract:

Interpreting contradictory results of multiple midpoint environmental indicators is challenging task. Hence, partial or full aggregation into building single scores has gained ground for the clear message they convey. This paper helps to improve understanding of the possibilities and limitations of such practice. Partial aggregated scores of five buildings were explored, limited to the environmental indicators shared by the methods examined and inventoried for the case studies. In general, the buildings’ single score ranking was maintained regardless of the aggregation approach, but rank reversal is possible if e.g., ecotoxicity impact indicators are considered. Such indicators are directly influenced by the mass of metals used in a building. Furthermore, uncertainties on their results, in LCI data and in impact and damage assessment are high, and experience with them is still limited. No single best aggregation stands out per se. All of them can play their part if officially supported to ensure that coherent weights/factors are built upon solid, up-to-date data and fair intergenerational and income equity valuation procedures. In such cases, LCA practitioners are encouraged to use single scores in addition to environmental profiles or selected indicators. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000151693
Veröffentlicht am 20.10.2022
Originalveröffentlichung
DOI: 10.1088/1755-1315/1078/1/012093
Scopus
Zitationen: 1
Dimensions
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Ökonomie und Ökologie des Wohnungsbaus (OEW)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 1755-1307, 1755-1315
KITopen-ID: 1000151693
Erschienen in IOP Conference Series: Earth and Environmental Science
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 1078
Heft 1
Seiten Art.-Nr.: 012093
Schlagwörter buildings LCA, weighting, distance to target, panel, monetisation
Nachgewiesen in Dimensions
Scopus
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