G-16 (Buildings) / G-15 (Products) Accounting for carbon storage/carbon sequestration

Aspect G-16 (Buildings) / G-15 (Products) Accounting for carbon storage/carbon sequestration Description Some products (e.g. wooden products) take up atmospheric carbon dioxide while producing biomass. Concrete- and lime-based products can also take up atmospheric carbon dioxide through recarbonization during the … Continue reading

G-17 Differences in background data system boundaries

Aspect G-17 Differences in background data system boundaries Description Currently, practitioners have to deal with various different data sources, such as public or commercial LCI databases, EPDs, literature, etc. All these data have been calculated by applying different rules, and … Continue reading

G- 18 Allocation case for cement-based materials

Aspect G- 18 Allocation case for cement-based materials Description Increasing numbers of building products are being made of secondary raw materials (SRM), or of generated waste that can be recycled throughout their life cycle. On the one hand, recycling eliminates … Continue reading

G-18 (Buildings) / G-16 (Products) Allocation

Aspect G-18 (Buildings) / G-16 (Products) Allocation Description Normally, LCA studies should focus only on a single product at a time. However, systems under assessment often produce more than one product. The same problem arises when different waste flows are … Continue reading

G-19 Allocation examples for wooden products

Aspect G-19 Allocation examples for wooden products Description Increasing numbers of building products are being made of secondary raw materials (SRM), or of generated waste that can be recycled throughout their life cycle. On the one hand, recycling eliminates the … Continue reading

G-19 Allocation case: production of renewable energy on-site

Aspect G-19 Allocation case: production of renewable energy on-site Description  The production of on-site renewable energy can occur at different time of the day, month and year, and may or may not meet on-site needs. Renewable energy may be consumed … Continue reading

G-20 Define reference building

Aspect G-20 Define reference building Description The whole-life performance of nearly all building products can be assessed only in the context of a specific building. Is it possible to set a reference building for this comparison? related study objective ☒ … Continue reading

G-20 (Buildings) / G-17 (Products) Allocation case: reuse, recycling and recovery

Aspect G-20 (Buildings) / G-17 (Products) Allocation case: reuse, recycling and recovery Description When the lifespan of a product ends, it can be reused, recycled, or used for recovery in another product system. These recovery operations entail a benefit for … Continue reading

G-22 Data selection for a product LCA

Aspect G-22 Data selection for a product LCA Description Various data sources exist for the calculation of product LCA data. They differ for example in terms of specificity, age, completeness and certainty. What data requirements apply for the production of … Continue reading

A-01 Distinction between wastes and by-products during the extraction and the processing stages

Aspect A-01 Distinction between wastes and by-products during the extraction and the processing stages Description Several wastes and by-products are either used or generated during the production phase of building products. A waste is an output from a process that … Continue reading