Tag: Related study phase: Goal and scope definition
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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 use phase . By using these materials or products, this fixed CO2 is stored during…
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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 so special attention has to be paid to assessing the consistency of these different sources.…
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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 the need to use virgin raw materials. On the other hand, the new commercial interest…
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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 treated collectively in the same process (e.g. incineration). In these situations, the allocation problem arises:…
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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 need to use virgin raw materials. On the other hand, the new commercial interest in…
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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 on site, or may be exported to the electricity grid or to a heating network,…
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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 ☒ stand-alone LCA ☒ comparative assertion related study phase ☒ ☐ ☐ ☐ ☐ goal and…
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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 the system that yielded them. How to allocate these benefits to the system under study,…
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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 product LCA data? related study objective ☒ stand-alone LCA ☒ comparative assertion related study phase…
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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 has not yet reached the end-of-waste state. A by-product is an output that is not…