SITE_WORKSHOP
This is a template attribute. Template attributes can be used in filtering, or to retrieve data from the model to use in drawings and reports. For example, when you create a report, Tekla Structures replaces the attributes added in the report template with the corresponding object property values.
For bolts this field shows the assembly type information in a string (Site or Shop). The message files (466 and 467) contain translations of these strings.
For studs this field shows the assembly type information in a string (Site or Shop).