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.

Shows the total weight of all reinforcing bars or of all strands in a reinforcing bar group. This template attribute is available in content type REBAR in graphical and textual templates.