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 order number of a rebar set bar layer.
You can define layer numbers for entire rebar sets or individual leg faces, or for individual rebar set bars using the user-defined attributes of property modifiers.
Layer numbering starts from 1. The smaller the layer number, the closer to the concrete surface the bar layer is.