Author: Zsoka Gyetvai

Following a simplified understanding of a building’s life cycle, the reference study period can be seen as the timespan of use, i.e. the duration of services within Module B. Hence the reference study period has a significant impact on the use stage’s contribution to the life cycle impacts. This means that the reference study period…

For referencing purposes, typical LCA results may be helpful. These values are typically heavily dependent on the assumptions made, and on the various rules that have been applied to a study. Hence a comparison with such values has to be made with special care. Germany: DGNB In Germany, the DGNB building labelling system defines benchmarks…

This document yields several distinctions that are relevant for the further procedure to compile an LCA study. The distinctions are given in the decision tree showed in Figure 5. In the first step, both for a building LCA and a product LCA, the decision on the scope of the study has to be made. This…

After the selection of the study type and the subsequent filtering of aspects, the LCA study is set up according to the general LCA practice as resulting from applying ISO 14040/14044. This process is briefly explained with a generic template of how to set up an LCA study. The individual steps are numbered – note…

Several of the aspects addressed in this guidance define a ‘standard set of parameter values’ for a study, e.g. a default reference study period. This standard set of parameter values is denoted as baseline scenario and provides a basis that allows for comparisons between different studies, e.g. two building LCA studies. The baseline scenario generally…