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.

Use to check whether an object is a spiral beam. You can use this attribute in filtering, for example. The attribute returns 1 if the object is a spiral beam, otherwise it returns 0.