...
Lines are representation of real life three dimensional objects. Hence, they require “Section” parameter. Section attribute contains properties such as depth, width, inertia etc. which are essential in FEA.
User can assign Section a section to a line Line object either by defining a new one or by calling from OpenBrIM database.
To create a section there should be at least one material defined in the project.
...
After Section attribute is selected for a Line object there are multiple configurations user can change such as Beta Angle and Local Axis Orientation.
...