4 Overview of the aspects covered in the guidance document

In total, 104 important aspects have been identified in the EeBGuide for improving building LCA studies that aim to be compliant both with CEN TC 350 standards and with 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 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.

• G-21 Background databases in LCA studies

• G-22 Data quality.

• G-23 Choice of LCI/LCIA datasets for screening LCA.

• G-24 Choice of LCI/LCIA datasets for simplified LCA.

• G-25 Choice of LCI/LCIA-datasets for complete LCA.

• G-26 Use of building physical description data.

• G-27 Choice of environmental indicators – screening and simplified LCA.

• G-28 Choice of environmental indicators – Complete LCA.

• G-29 Abiotic resources depletion indicator

• G-30 Land use indicator

• G-31 Biodiversity indicator

• G-32 Human toxicity and ecotoxicity indicators

• G-33 Ionizing radiation indicator

• G-34 Water consumption as a new impact category.

• G-35 Normalization of indicators

• G-36 Weighting of indicators

• G-37 Uncertainty analysis for comparative assertion.

• G-38 Sensitivity analysis

• G-39 Scenario analysis

• G-40 Communication of LCA results

• G-41 Reproducibility.

• G-42 Life cycle inventory documentation.

• G-43 Documentation of LCA results

• G-44 Critical review

• A-01 Use and adaptation of available cradle-to-gate and cradle-to-grave LCA or EPD data for building products and technical equipment

• A-02 Accounting for technical building equipment – screening and simplified LCA.

• A-03 Accounting for technical building equipment – complete LCA. 

• A-04 Transport of products to the construction site – screening and simplified LCA.

• A-05 Transport of products to the construction site – complete LCA.

• A-06 Construction installation process impacts for screening LCA.

• A-07 Land preparation and earthwork during the construction process – screening and simplified LCA 

• A-08 Land preparation and earthwork during the construction process – complete LCA.

• A-09 Product storage on site before installation – screening and simplified LCA.

• A-10 Product storage on site before installation – complete LCA.

• A-11 Transport of construction workers – screening and simplified LCA.

• A-12 Transport of construction workers – complete LCA.

• A-13 Transport of construction machinery to the building site – screening and simplified LCA 

• A-14 Transport of construction machinery to the building site – complete LCA.

• A-15 Installation of the product into the building – screening and simplified LCA.

• A-16 Installation of the product into the building – complete LCA.

• A-17 Accounting of on-site capital goods (e.g. construction machinery, bungalows…)

• A-18 Water and energy demand – screening and simplified LCA.

• A-19 Water and energy demand during construction – complete LCA.

• A-20 Construction wastes –  screening and simplified LCA.

• A-21 Construction wastes – complete LCA.

• A-22 Prefabrication of building products – screening and simplified LCA.

• A-23 Prefabrication of building products – 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 with screening LCA.

• B-04 Maintenance with simplified LCA.

• B-05 Maintenance with complete LCA.

• B-06 Repair with screening LCA.

• B-07 Repair with simplified LCA.

• B-08 Repair with complete LCA.

• B-09 Inclusion of energy and materials for repair

• B-10 Assessment of different repair and maintenance alternatives

• B-11 Definition of the service life of a building product

• B-12 Replacement frequency.

• B-13 Replacement with screening LCA.

• B-14 Replacement with simplified LCA.

• B-15 Replacement with complete LCA.

• B-16 Refurbishment for screening, simplified and complete LCA.

• B-17 Operational energy demand for new buildings – Boundaries and scenarios for screening LCA 

• B-18 Operational energy demand for new buildings – Boundaries and scenarios for simplified LCA 

• B-19 Operational energy demand for new buildings – Boundaries and scenarios for complete LCA 

• B-20 Operational energy demand for existing buildings – Boundaries and scenarios

• B-21 Operational energy demand for new buildings – Consideration of user behaviour

• B-22 Operational energy demand for existing buildings – Consideration of user behaviour

• B-23 Operational energy calculation – Allocation of energy production for on-site systems connected to grid”

• B-24 Dynamic LCA data for assessing the impact of electricity consumption.

• B-25 “Assessment of operational water use in screening LCA”

• B-26 Assessment of operational water use in simplified LCA.

• B-27 Assessment of operational water use in complete LCA.

• B-28 Accounting of different types of waste water treatment

• B-29 Building services

• B-30 Transport of the users of the building.

• B-31 Distinction between Modules B2, B3, B4 and B5”

• C-01 Demolition/deconstruction – screening and simplified LCA.

• C-02 Demolition/deconstruction – complete LCA.

• C-03 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.