There are certain Revit families that have a limited number of predefined shapes. Concrete columns and beams are a good example. There are only a very few predefined shapes in each of the families. There can be any number of shape sizes for these families so there cannot be an automatic mapping to a particular size when importing or exporting a repository from Revit. These can be handled with the parametric mapping of Revit families and ISM shapes.
ISM Section Creation Template
Let’s take a look at adding parametric shapes to the ISM Section Creation template.
Open the sections mapping dialog by either picking the Settings button on the Bentley tab in Revit
Or, if you are in the Structural Synchronizer Mappings dialog click the Edit Shared Settings button
You can repeat the steps for any additional families.
Family Type Creation Template
Now let’s look at adding Revit type families to the mapping. One thing different about these mappings is you can only map one ISM parametric section type to one Revit family type. So if you have the ISM solid rectangle type mapped to the Revit concrete-square-column type you cannot also map it to the Revit concrete-rectangular-column type.
Repeat the steps to add any other shapes you need.