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Title: Comparison of the environmental assessment of an identical office building with national methods
Authors: Frischknecht, R
Birgisdottir, H
Chae, CU
Lützkendorf, T
Passer, A
Alsema, E
Balouktsi, M
Berg, B
Dowdell, D
Garcia, Martinez, A
Habert, G
Hollberg, A
König, H
Lasvaux, S
Llatas, C
Nygaard, Rasmussen, F
Peuportier, B
Ramseier, L
Röck, M
Soust, Verdaguer, B
Szalay, Z
Bohne, RA
Braganca, L
Cellura, M
Chau, CK 
Dixit, M
Francart, N
Gomes, V
Huang, L
Longo, S
Lupišek, A
Martel, J
Mateus, R
OuelletPlamondon, C
Pomponi, F
Ryklová, P
Trigaux, D
Yang, W
Issue Date: 2019
Publisher: Institute of Physics Publishing
Source: IOP conference series : earth and environmental science, 2019, v. 323, no. 1, 12037 How to cite?
Journal: Sustainability 
Abstract: The IEA EBC Annex 72 focuses on the assessment of the primary energy demand, greenhouse gas emissions and environmental impacts of buildings during production, construction, use (including repair and replacement) and end of life (dismantling), i.e. during the entire life cycle of buildings. In one of its activities, reference buildings (size, materialisation, operational energy demand, etc.) were defined on which the existing national assessment methods are applied using national (if available) databases and (national/regional) approaches. The "be2226" office building in Lustenau, Austria was selected as one of the reference buildings. TU Graz established a BIM model and quantified the amount of building elements as well as construction materials required and the operational energy demand. The building assessment was carried out using the same material and energy demand but applying the LCA approach used in the different countries represented by the participating Annex experts. The results of these assessments are compared in view of identifying major discrepancies. Preliminary findings show that the greenhouse gas emissions per kg of building material differ up to a factor of two and more. Major differences in the building assessments are observed in the transports to the construction site (imports) and the construction activities as well as in the greenhouse gas emissions of the operational energy demand (electricity). The experts document their practical difficulties and how they overcame them. The results of this activity are used to better target harmonisation efforts.
Description: Sustainable Built Environment Conference 2019, SBE 2019, Austria, 11-14 September 2019
ISSN: 1755-1307
DOI: 10.1088/1755-1315/323/1/012037
Rights: © 2019 IOP Publishing Ltd. All rights reserved. Content from this work may be used under the terms of theCreative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
The following publication R Frischknecht et al 2019 IOP Conf. Ser.: Earth Environ. Sci. 323 012037, is available at
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