Tag: Study type: Complete LCA
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G-06 Distinction between the declared unit and the functional unit
Aspect G-06 Distinction between the declared unit and the functional unit Description The functional unit represents the quantified performance of a product system for use as a reference unit for the LCA study. It is the unit of scale or reference on which the LCA results are based, and relates to the given function of…
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G-07 (Buildings) / G-08 (Products) Functional equivalent vs. functional unit vs. declared unit
Aspect G-07 (Buildings) / G-08 (Products) Functional equivalent vs. functional unit vs. declared unit Description ISO 14040, ISO 14044 and EN 15804 define a functional unit; EN 15804 also defines a declared unit. EN 15978 defines a functional equivalent.What are the differences, and when should which term be used? Related study objective ☒ stand-alone LCA…
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G-08 Reference study period
Aspect G-08 Reference study period Description The reference study period (RSP) is defined as the time period for which the time-dependent characteristics of the object under assessment are analysed. The RSP determines the use phase of the assessed building or product. Maintenance, repair, replacement and refurbishment activities, as well as operational energy and water use,…
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G-09 Energy-efficient product definition
Aspect G-09 Energy-efficient product definition Description What is an energy-efficient product, and how it is characterized? related study objective ☒ stand-alone LCA ☒ comparative assertion related study phase ☒ ☐ ☐ ☐ ☐ goal and scope definition inventory analysis (LCI) impact assessment (LCIA) interpretation reporting relevant for new buildings existing buildings construction products screening LCA…
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G-09 Object of assessment with regard to energy-efficient build-ings
Aspect G-09 Object of assessment with regard to energy-efficient buildings Description Life cycle assessment is a flexible methodology that can be applied to all kinds of product or building. It is important to specify whether the LCA methodology has to be adapted in terms of system boundaries or cut-off rules when applying it to an…
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G-10 Definition of system boundaries for products
Aspect G-10 Definition of system boundaries for products Description The system boundaries of product LCA can be different, depending on the goal and scope of the study. If the goal is to create an EPD, then the practitioner is likely to follow the EN 15804 standards. But even for EPD, the system boundaries can vary,…
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G-10 Definition of system boundaries for new buildings
Aspect G-10 Definition of system boundaries for new buildings Description A clear definition of the system boundaries is needed for improved understanding and interpretation of the LCA results, as well as to enable them to be used for comparative assertions (e.g. choice of design alternatives) or stand-alone LCA (e.g. benchmarking purposes).How should this system boundary…
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G-11 Definition of system boundaries for existing buildings
Aspect G-11 Definition of system boundaries for existing buildings Description A clear definition of the system boundaries is needed to understand and interpret the LCA results better, as well as to use them for comparative assertions (e.g. choice of design alternatives) or stand-alone LCA (e.g. for benchmarking purposes). How should this system boundary be defined…
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G-12 (Buildings) / G-11 (Products) Cut-off rules for screening, simplified, complete LCA
Aspect G-12 (Buildings) / G-11 (Products) Cut-off rules for screening, simplified, complete LCA Description Cut-off rules enable LCA practitioners to conduct LCA without having to model 100% of the product system. According to the ILCD Handbook, the cut-off criteria refer to the omission of non-relevant life cycle stages, activity types, specific processes and products and…
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G-14 (Buildings) / G-13 (Products) Infrastructure machinery and capital equipment for material production, energy, water, waste and transport for complete LCA.
Aspect G-14 (Buildings) / G-13 (Products) Infrastructure machinery and capital equipment for material production, energy, water, waste and transport for complete LCA. Description Various LCA databases and datasets with different boundaries are available. These databases apply different rules on the inclusion or exclusion of infrastructure in LCA datasets (e.g. owing to database policy or cut-off-rules).…