Machine-translated from Danish
Describe the building under Building and operation
Purpose
Section titled “Purpose”Fill in the building’s core data, usages and calculation settings: the foundation for the whole calculation.
Prerequisites
Section titled “Prerequisites”You have a project with an open version. Click Building and operation in the project menu.
The page has four areas: the Usages table, Calculation, Building and Energy consumption in operation.
- Under Building: choose a classification (e.g. LCAbyg 5); it determines which classification system is available in the building model. Storeys above/below and additional description are documentation fields and don’t feed into the calculation itself.
- In the Usages table: click Add usage, and choose building type and building category (BBR) for the usage; these drive default values for installations and which limit value the project is measured against.
- Under Calculation: set calculation mode, year of occupancy and assessment period (typically 50 years, and locked to a fixed value for some calculation modes).
- Fill in the areas as columns in the Usages table: heated floor area, heated basement, gross floor area (100%), garage and balconies etc.. See the box below: it’s the most common trap on this page.
- Under Energy consumption in operation: add at least one energy source and enter the annual consumption.
The two areas people confuse
Section titled “The two areas people confuse”Reference area and heated floor area are two different numbers with two different purposes, and both are filled in on this page:
| Reference area | Heated floor area | |
|---|---|---|
| Used for | The denominator in the result (kg CO₂-eq/m²/year) | Multiplier for energy consumption and default values |
| Composition | Gross floor area (100%) + garage (50%) + balconies etc. (25%) | A single number |
| Does one feed into the other? | No | Heated floor area is not part of the reference area |
Traps to know about
Section titled “Traps to know about”- Documentation fields aren’t included in the calculation. Number of users, storeys and description are saved with the project but don’t affect the result.
- Changing classification is destructive. If you change classification, all constructions lose their classification and must be re-placed.
- Year of occupancy is offset. Energy consumption is calculated starting the year after the start year.
- Missing default values give a 0 contribution, with no warning that stops you.
- Calculation mode is upstream of everything else. Choose it wrong, and everything below it is wrong without that being visible in the result.
Result
Section titled “Result”The building now has enough core data, area and operational energy to move on to the building model.