Within a single multi-body Part File, the SOLIDWORKS Weldments tool may be used to create 3D structures with numerous profiles and end-conditions. This tool isn't limited to welded metal applications because it can use any closed profile.
Insert > Weldments > Structural Member (Weldments toolbar) or Structural Member (Insert > Weldments > Structural Member). Make choices in the PropertyManager to define the structural member's profile. To determine the path for the structural member, pick sketch segments in the graphics area.
Install dir lang language weldment profiles is the default place for weldment profiles. You have the option of filing your custom profile in the SOLIDWORKS folder structure or creating a new folder structure.
You can describe the basic framework of a weldment structure with 2D and 3D sketches, then create structural components containing groupings of sketch segments. You may also use the Weldments toolbar to add components like gussets and end caps.