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Trim the Model

You can trim = remove object classes, individual objects and properties from the model. The removed properties are not exported to IFC.

Trimming can be done manually in the application from the Model Trimmer workspace or automated using templates. The following instructions are for automating trimming with templates.

Step 1 – Decide which object classes you need 

Worksheet ModelView           
Section Include/Exclude Objects Based on Object Class or Group

Here you can define which Object Classes are relevant to your use case. It is a good approach to first exclude all Object Classes and then start including only the ones you need.

Step 2 – Decide which object instances you need

Worksheets

Groups Worksheet
Model View Worksheet

Sections

Define Groups Based on Property Values -section
Include/Exclude Objects Based on Object Class or Group

You can include and exclude individual objects (Object Instances) by defining object groups and including/excluding the groups.

First you define a group that contains a set of objects, for example all spaces with a Space Name that starts with ‘Gross’. The name of this group could be for example 'Gross Area Spaces'. Please note that you can also create groups that use numeric and Yes/No operators as well as And/Or logic. You can find more information about groups here.

Then you simply include/exclude the group just like you would include/exclude an object class.

Step 3 – Decide which properties you need

Worksheet ModelView           
Section Include/Exclude Property

Here you can define which properties are relevant to your use case. Again, it is a good approach to first exclude all properties for all Object Classes and then start including only the ones you need.