Structure System and Weldments Video: What's New in SOLIDWORKS 2020 - Structure System Contents Options for Creating Primary Members Based on Points Creating Curved Beams and Merging Tangent Members You can create curved beams from primary and secondary members in a structure system. Curved members behave the same way as linear members where you can add secondary members between them. Split Members You can split primary and secondary members by specifying references or dimensions. Pattern and Mirror Support You can pattern and mirror structure system members using the Linear Pattern, Circular Pattern, or Mirror tools. Member and Corner Trim Enhancements Enhancements and quality improvements for structure system features include: Cut List Properties for Weldment and Structure System Features Two cut list properties are available for structural members created by weldment as well as structure system features.