According to the ILCD Handbook, aspects relating to goal definition should be addressed first. The ILCD Handbook set out to identify the purpose of the different types of assessment in the building sector, and the target audience (architects, building designers, construction companies etc.). In total, four aspects have been identified: the issue of comparative assertions, selection of appropriate modelling approaches for the study goals (situations A, B or C); future technical developments; and innovation.
The aspects related to the scope definition are presented below in the order recommended by the ILCD Handbook. They aim to identify what to analyse, and how this should be done. These aspects are closely related to the goal definition aspects.
- G-01 Goal definition for building and product LCA.
- G-02 Classifying the decision context as situation A, B, and C for building and product LCA
- G-03 Future technical developments and innovation.
- G-04 Comparative assertion for building or product LCA.
- G-05 Scope definition for building and product LCA.
- G-06 Functional equivalent
- G-07 Functional equivalent vs. functional unit vs. declared unit
- G-08 Reference study period.
- G-09 Object of assessment with regard to energy-efficient buildings
- G-10 Definition of system boundaries for new buildings
- G-11 Definition of system boundaries for existing buildings
- G-12 Cut-off rules for screening, simplified, complete LCA.
- G-13 Infrastructure machinery and capital equipment for material production, energy, water, waste and transport for screening and simplified LCA.
- G-14 Infrastructure machinery and capital equipment for material production, energy, water, waste and transport for complete LCA.
- G-15 Transport of goods in LCA studies
- G-16 Accounting for carbon storage/carbon sequestration.
- G-17 Differences in background data system boundaries
- G-18 Allocation.
- G-19 Allocation case: production of renewable energy on-site.
- G-20 Allocation case: reuse, recycling and recovery.