Data for LCI, LCIA and EPD.
LCA database
An LCA database is a generic name for a database that contains data that can be used for life cycle assessment. The data in an LCA database can consist of life cycle inventory data (LCI) and/or already characterized life cycle impact assessment data (LCIA). Data from an EPD is always LCIA data that is already characterized.
As any LCA data, also EPD are originally based on inventory data but the final document does not contain the original LCI data but just the LCIA results for that product. Some tools may provide users access to both original LCI data and LCIA results, in One Click LCA users normally only have access to the LCIA results.
How to understand the difference between LCIA and LCI data
LCI (Life Cycle Inventory)
List of all different inputs and outputs from the processes studied such as kg of methane emissions to air or phosphorus emissions to water.
LCIA (Life Cycle Impact Assessment)
LCI data transformed into environmental impacts using a characterization model. For instance methane is one component that impacts GWP (Global warming potential impact category) and thus it is transformed into CO2 equivalents using a characterization method (such as CML, Traci or ReCiPe). There are several different characterization models but in the European building sector EN 15804 refers to CML which is the commonly used method and also globally most widely used one for construction. The EN 15804 standard is also in line with the ISO 14044/44 standard. To read up on the standard supported check here:
Standards supported in One Click LCA.
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