Download previous versions of LCAbyg

File with new emission factors for operational energy; the import file was added on 08/14/2024. The file can only be used with the "User-specific LCA" calculation type. Two bugs have been fixed in the latest version of LCAbyg 2023.3: – If a construction contained several instances of the same building product with different quantities, these were shown with the same quantity in the table overview to the right when the construction was selected. This didn't affect the calculation, only the overview of building products. It has been fixed. – For projects with special conditions, the result wasn't exported correctly to the standard format for documenting the climate requirement. The total climate impact is now correctly shown excluding additions from special conditions.

• Emission factors for electricity, district heating, and grid gas 2025-2075 (draft)

In this version, the ILCD+EPD import has been updated: – It's now also possible to import EPDs from The International EPD System (Environdec) and ECOSMDP, which includes EPD Danmark. – EPDs with missing data are created with the source "User", and the missing data fields will produce an error message so it's clear where data needs to be entered. It's often the "Mass factor" field that's missing — see an example in the user guide. – The in-program user guide under "Help" has been updated with new details about how the ILCD+EPD import works. A few constructions have been corrected in the GenDK library.

Can be used for LCA calculations under the building regulation's climate requirements effective from January 1, 2023. First release under the name "LCAbyg 2023", with simultaneous Windows (5.3.1.0) and Mac (5.3.1.2) versions. Updated user guide in both Danish and English, and support for importing the ILCD+EPD format.

New scenario feature, new analysis charts, results in table formats, and fuzzy search in the libraries. Supports importing EPDs from multiple operators (including EPD Danmark) and importing components from LCAbyg 3.2. Database updated to Ökobau.dat 2020, with added uncertainty factors for building products.

Beta version — contains a known bug in calculating impacts from operational energy. New file format (.lcabyg4beta), not compatible with earlier or later versions' project files.

Ability to compare results with a reference building, a built-in service-life table for determining building products' service life, a new method for calculating replacements of building products, and an English version of the program.

Major update to the GEN_DK database (Ökobau 2016), doubling the number of stages/building products and adding links to the Ökobau website.

First official release of version 3. New table-based interface for entering building elements, a new tab showing an overview of the GEN_DK database, and the ability to import/export constructions, building products, and stages. First version to support Linux.

Significantly faster calculation speed, support for Mac OS X (LCAbyg's first Mac version), and an updated English translation.

First official release of version 2. Updated operational data (now with ADPe and ADPf), a new renovation example project, and "save as" functionality.

First official version of LCAbyg. Later updated with export of results to Excel and the ability to open project files by double-clicking from Windows.