Linking related IFC models using IFC group models

If you have a group of IFC models that are associated with each other, you can link them together using IFC group models. This may be useful if you have a separate IFC model for each discipline in a project and you want to be able to work with all of the related IFC models together at the same time. If you link a number of related IFC models together, you can open them all at the same time by opening the IFC group model and they appear at the same time, overlaid, in the IFC Model and IFC Comparison Model panes. You can also use IFC group models to add site objects, such as cranes, portacabins, security fences, scaffolding, parked cars, etc, to IFC models to give a better visual representation of how a site will appear at various stages of a project. Site objects exist as individual IFC files; you add them to an IFC model by creating an IFC group model and adding the site object to the IFC group model. After you have linked a number of related IFC models together, you can also open the individual IFC models separately if you wish.

Before linking together IFC models, you must have first associated each of the corresponding IFC files with a project in Powerproject BIM in order to create an IFC model object for each IFC file in Library Explorer.

Once you have linked a number of IFC models together using an IFC group model, you can open the IFC group model in Powerproject BIM and work with it in much the same way as you would work with a single IFC model.

To link together a number of IFC models using an IFC group model:

  1. If you have not already done so, create or open a project file in Powerproject BIM.
  2. Click the File tab, then click BIM. A list of any IFC models and IFC group models that already exist within the project appears.
  3. Click New... in the IFC column, then select Create Group from the menu that appears. The Group Model Details tab of the IFC Group Model Properties dialog appears.
  4. Enter a brief name and an additional description in the Name and Description fields.
  5. Click Add. The Select IFC Model dialog appears, listing the IFC models that exist within the project. Note that the Add button is unavailable if you have not yet associated any IFC files with the project.
  6. Select the IFC model that you want to add to the IFC group model then click OK.
  7. You are asked whether you want to copy the colour override and timeline behaviour settings from the selected IFC model to the IFC group model. If you have already configured these settings for the selected IFC model, click Yes; otherwise click No. The IFC model is added to the IFC group model and appears in the list of IFC models on the Group Model Details tab of the IFC Group Model Properties dialog.
  8. In the Discipline column, select the discipline that applies to the IFC model, for example Architecture, Plumbing or Structural.
  9. Repeat steps 5 to 8 to add further IFC models to the IFC group model. Each time you add an IFC model, if its colour override settings differ from those of the IFC group model you are asked whether you want to merge the IFC model's settings with the IFC group model's settings.
  10. When you have added all of the IFC models to the IFC group model, configure its colour override and timeline behaviour settings (as described below) then click OK to close the IFC Group Model Properties dialog.

Related Topics:

Editing the properties of an IFC group model

Aligning the IFC models in an IFC group model

Associating IFC files with projects

Adding site objects to an IFC model

Working with new revisions of IFC files

Opening an IFC model