In total, 69 important aspects have been identified in EeBGuide for improving product LCA studies that aim to be compliant with both CEN TC 350 standards and the ILCD Handbook.
- 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 Distinction between the declared unit and the functional unit
- G-07 Functional equivalent
- G-08 Functional equivalent vs. functional unit vs. declared unit
- G-09 Energy-efficient product definition.
- G-10 Definition of system boundaries for products
- G-11 Cut-off rules for screening, simplified, complete LCA.
- G-12 Infrastructure machinery and capital equipment for material production, energy, water, waste and transport for screening and simplified LCA.
- G-13 Infrastructure machinery and capital equipment for material production, energy, water, waste and transport for complete LCA.
- G-14 Transport of goods in LCA studies
- G-15 Accounting for carbon storage/carbon sequestration.
- G-16 Allocation.
- G-17 Allocation case: reuse, recycling and recovery.
- G-18 Allocation case for cement-based materials
- G-19 “Allocation examples for wooden products”
- G-20 Define reference building.
- G-21 Background databases in LCA studies
- G-22 Data selection for a product LCA.
- G-23 Data quality.
- G-24 “Collecting foreground and background data for product LCA”
- G-25 Choice of environmental indicators – screening and simplified LCA.
- G-26 Choice of environmental indicators – Complete LCA.
- G-27 Abiotic resources depletion indicator
- G-28 Land use indicator
- G-29 Biodiversity indicator
- G-30 Human toxicity and ecotoxicity indicators
- G-31 Ionizing radiation indicator
- G-32 Water consumption as a new impact category.
- G-33 Normalization of indicators
- G-34 Weighting of indicators
- G-35 Uncertainty analysis for comparative assertion.
- G-36 Sensitivity analysis
- G-37 Scenario analysis
- G-38 Communication of LCA results
- G-39 Reproducibility.
- G-40 Life cycle inventory documentation.
- G-41 Critical review
- A-01 Distinction between wastes and by-products during the extraction and the processing stages
- A-02 Transport of staff in the supply of raw materials
- A-03 Transport of raw materials to the manufacturer
- A-04 Transport of products to the construction site – screening and simplified LCA.
- A-05 Transport of products to the construction site – complete LCA.
- B-01 Emissions of dangerous substances to indoor air during the use stage.
- B-02 Release of dangerous substances to soil and water during the use stage.
- B-03 Maintenance – product LCA.
- B-04 Repair – product LCA”
- B-05 Products within complex systems
- B-06 Definition of the service life of a building product
- B-07 Replacement frequency.
- B-08 Modelling of energy use.
- B-09 Modelling of water use.
- B-10 Accounting of different types of waste water treatment
- B-11 Distinction between Modules B2, B3, B4 and B5
- B-12 Robustness of data (LCA, service life) to model the life cycle of a building product
- C-01 End-of-waste state.
- C-02 End of life (EoL) scenarios
- C-03 Choice of data.
- C-04 Waste classification.
- C-05 Transport of wastes to landfill, incineration and recycling facilities – screening and simplified LCA
- C-06 Transport of wastes to landfill, incineration and recycling facilities – complete LCA.
- C-07 Waste treatment vs recycling and recovery process
- C-08 LCA modelling of landfill/disposal
- D-01 Inclusion of reuse, recovery or recycling potentials (Module D) in building or product LCA
- D-02 Reuse – water consumption.
- D-03 Credits for recycling and energy recovery.