IFC viewer - Material assembly code

Import, Integrations & BIM Plugins
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Hi One Click LCA Team,

I am exploring the IFC viewer from one click lca. I have couple of queries regarding them.

  1. How does the software/platform determine which geometry from an IFC model is included in an LCA calculation? Is this selection based on the IFC Entity (e.g. corresponding Revit Element Type)? Additionally, if we have populated the Assembly Code attribute (e.g. using NL-SfB), is this information utilised in the process?

  2. Can you please confirm if and how the software/platform calculates the volume/area of seperate materials we have authored as a Revit compound wall and exported as an IFC wall?

Looking forward to your insights as always.

Best,

Prethvi,
Sustainability Lead,
UNS.

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Hello Prethvi,
Thank you for your questions. Detailed information can be found in our Help Centre article here: IFC Viewer & Data Exporter | One Click LCA

To answer your questions:
Q: How does the software/platform determine which geometry from an IFC model is included in an LCA calculation?
A: The material quantities displayed in the data table are based on the IfcQuantities property and are also calculated using the geometry engine.

Q: Additionally, if we have populated the Assembly Code attribute
A: If the assembly code is included as a property in the IFC file, you should be able to access it and add to the data table via the “Properties” panel in the IFC Viewer.

Q: Can you please confirm if and how the software/platform calculates the volume/area of separate materials we have authored as a Revit compound wall and exported as an IFC wall?

A:

  • If your IFC includes IfcMaterialLayer data, One Click LCA splits the wall into layers and calculates each layer’s volume/area separately.
  • If no layer data exists, it uses the overall object volume (or thickness if available) and treats it as one material.
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