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How to choose calculation mode

Choose which life cycle modules are included in the calculation, the single most influential setting in the whole project.

You’re on Building and operation, in the Calculation card. Calculation mode is not chosen when the project is created; that happens here.

  1. Find the Calculation mode field.
  2. Choose the mode that matches the purpose: e.g. BR25 (includes A1-3, A4-5, B4, B6, C3-4, D), BR23, or DGNB. Other modes restrict which stages are included.

Calculation mode controls which modules are included in the first place. Choose it wrong, and everything below it is wrong, without that being visible in the result. It also affects which fields in Special conditions are editable, and whether lifespan 0 resets impacts (BR23 only).

Calculation mode can be changed after creation, but don’t change it without reconsidering every result. It’s upstream of everything else in the calculation.