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Example: Add a classification code to objects in Organizer and export the code to IFC

Last updated November 22, 2017 by Tekla User Assistance tekla.documentation@trimble.com

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Example: Add a classification code to objects in Organizer and export the code to IFC

Example: Add a classification code to objects in Organizer and export the code to IFC

You can add a classification code to the user-defined attributes of objects through a property categorycategory in Organizer based on adding user-defined attributes to model objects

Within a property category, a model object can belong to only one lowest level category at a time.

in Organizer and export the code with the objects to an IFCfile format commonly used in BIM that facilitates software interoperability

IFC is an open specification developed by the IAI (International Alliance for Interoperability).

Model can be exported into an IFC file.


  1. To open Organizer , click Manage on the ribbon and then click Organizer.
  2. Create the classification categories that you need as property categories.

    Property categories have round icons in the category tree.

  3. Create a custom propertyobject property that the user can manually include in Organizer

    Some properties are not automatically available in the Organizer, for example the properties of reference model objects.

    that you will use in the classification.

    1. Clickto open the settings and click Custom > Property.

    2. Define the custom property as shown in the image below. Set the property type to UDAobject property created by the user in order to widen the range of predefined object properties

      User-defined attributes are used when the predefined object properties are not sufficient but more properties are needed. For example, comment, locked, and erection status are user-defined attributes.


    If you want, you can add the property to the objects.inp file to see the property in the user-defined attributes dialog box.

  4. Add the custom property to a property templatedefinition of object property layout for the property table in object browser

    The property template is saved in an .xml file or in the Organizer database.


    If you do not have a suitable property template, create a new template.

    1. Search for the custom property you created and drag it to the selected template.

    2. Click Modify to save the template and close the settings.
  5. Add the custom property to the property category you created earlier.
    1. Double-click the root property category to open the category properties.
    2. Under Object properties , select the custom property you created.

    3. Click Modify to save the changes.

    Now all the subcategories under the property category have the same custom property. The lowest subcategories will add the custom property to the objects with the values you will define next.

  6. Set the custom property value in the subcategories to add the value to the objects.

    You can add different property values in all subcategories.

    1. Double-click a lowest level subcategory to open category properties.
    2. Add the custom property value that you want to write to the objects in the selected subcategory.

    3. Click Modify to save the changes.
  7. Synchronize the property category to write the property values to the model objects.

    Select any subcategory in the property category, right-click and select Synchronize the category.

    The whole category tree is synchronized.

    You can check the result in Object Browser , or by inquiring an object.

  8. Add the classification code to the project properties.
    1. On the File menu, click Project properties > User-defined attributes.
    2. Add the classification code to the Classification system box.

      Use the name that you added to the Property option when creating the custom property.

      You can add one classification code at a time this way.

  9. Export the classification code to an IFC file.
    1. On the File menu, click Export > IFC.

      The classification code is exported with assemblies even if you have added it to parts.

    2. Check the result in the exported model.

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