Towards a Reduced Set of Indicators in Buildings LCA Applications: A Statistical Based Method

Abstract : Several Life Cycle Assessment (LCA) tools for buildings have been developed over the past few years. Recent reviews show that most of the tools use between 8 and 16 Life Cycle Impact Assessment (LCIA) and Life Cycle Inventory (LCI) based indicators. This high number of indicators is often seen as a problematic issue for decision makers. In this paper, we propose a statistical methodology to solve the problem of identifying a simplified but relevant set of environmental indicators. It is based on a Principal Component Analysis (PCA) applied on a French LCI/LCIA database of building materials and products. Results show that only 4 dimensions can be sufficient to explain 86 % of the variance (also called inertia) for an original set of 13 indicators. Rotation techniques such as varimax proved to be quite powerful to extract relevant environmental components. In a subsequent building case study, the weightings of the functional units of the different materials and products also confirm the conclusions drawn at the database scale.
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Contributor : Philippe Garat <>
Submitted on : Tuesday, February 25, 2014 - 5:09:52 PM
Last modification on : Monday, November 12, 2018 - 10:57:03 AM

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  • HAL Id : hal-00951918, version 1

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Sébastien Lasvaux, Philippe Garat, Jacques Chevalier, Bruno Peuportier. Towards a Reduced Set of Indicators in Buildings LCA Applications: A Statistical Based Method. International Symposium on Life Cycle Assessment and Construction 2012, Jul 2012, Nantes, France. 65-72 (+ 4 p. of appendixes). ⟨hal-00951918⟩

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