EMA-002: IFC of the model must contain base quantities

Details

The IFC schema provides specific property sets for representing base quantities. Base quantities provide important information about the geometric dimensions of objects in the BIM model. These must be included in the exported IFC file in order to, for example, import area values for rooms into eTASK. These area values are used, for example, for area billing.

Screenshot of eTASK software showing area values for a space, including polygon area, base area, volume, height, and perimeter measurements

Figure 1: Area values of a room in eTASK

Autodesk Revit

When using “eTASK.BIM-Tools for Revit,” the export of base quantities is automatically configured by the eTASK add-in. For a manual export using Autodesk’s IFC Exporter, the export of base quantities must be configured: File → Export → IFC → Change Settings… → Property Sets.

Dialog "Einrichtung ändern" with IFC export settings, "Basismengen exportieren" checkbox selected

Figure 2: Configuring base quantities for IFC export in Revit

Graphisoft ArchiCAD

In ArchiCAD, the export of base quantities must be configured in your IFC settings: File → Interoperability → IFC → IFC Translator… → Select a translator for export → “Data Conversion”…”.

Set the Element Parameters option.

Note: Selecting this option significantly increases the size of the IFC file. Therefore, only export element parameters if you know that the target application can read this data. Filter the exported parameters by type: In the pop-up menu, select whether to export All Parameters or Only Quantities/Property Data.

Data evaluation dialog for IFC export showing settings for available data types, IFC properties, and compatibility options with OK/Cancel buttons

Figure 3: Configuring the base quantities for IFC export in ArchiCAD

Nemetschek Allplan

Under Teamwork IFC, click Export File.
Select the sub-views to be exported.
Enter the save path.
Select the file type IFC 2x3 files (*.ifc).
Under Settings – Advanced Options, check the box for Transfer Volume Data.
Confirm by clicking OK.

Settings dialog showing FC Export import options with Management section expanded and Management import checkbox selected

Screenshot from Allplan: Check the box for “Transfer quantity data”