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What is LCAbyg, and what can it do

Give you an overview of what LCAbyg is, before you create your first project.

LCAbyg is a web-based tool for life cycle assessment (LCA) of buildings. It replaces the desktop program LCAbyg 5 (2023) and is used to document a building’s climate impact, typically in connection with the building regulation’s climate requirements (BR §298) or a DGNB certification.

In LCAbyg you build up a building model from building elements and building products, add operational energy and transport, and get the building’s total climate impact calculated, broken down by life cycle stage (A1-A3, A4-A5, B1-B7, C1-C4 and D). The result is compared against the building regulation’s limit values and can be exported for documentation.

  • Create and manage projects, alone or together with colleagues in your organization.
  • Enter building assumptions, based on the core data from your project.
  • Build a building model from building products and constructions, either from the official library, your organization’s library, or your own personal library.
  • Import existing projects from LCAbyg 5 .lb5 or from earlier Konto exports.
  • Calculate the building’s climate impact and see the result broken down by stage, building element and material.
  • Compare against the building regulation’s limit values and against other buildings via benchmark.
  • Lock and archive a version, and export documentation to the Danish Green Building Council.

The guide covers the LCAbyg application itself: what you see once you’re logged in.