Logical connections are created automatically as children of plate and profile systems where they are bounded to other systems. When placing design seams and splitting the seams, logical connections are also created automatically at the seams for the newly created child systems or at the intersections between systems. In some cases, you can manually create a logical connection, such as between two edge-to-edge plate systems or between a profile system and a plate system that are aligned end-to-edge.
The top level logical connection is called the root logical connection. Every root logical connection has at least one leaf (or child) logical connection. If multiple leaf logical connections exist, then the parent system is bounded to or intersects multiple child systems along the connection, as shown in this example:
When two plate systems or a plate system and a profile system intersect or are bounded to each other, you can invert the logical connection to change the way the systems are connected. You can also split the logical connection between the plate systems.
You can manually place logical connections, such as between edge-to-edge plate systems, or between members and plates using Logical Connection Command.
Logical connections contain the connection properties between systems. These properties are used to create assembly connections, physical connections, and construction feature objects in the Structural Detailing task, and to generate manufacturing data in the Structural Manufacturing task.