Using the Steel Connections: Column - Foundation (Concrete Column Base) extension, you can generate a connection between a steel column and the foundation (concrete column base). the steel column is concreted in the foundation.
At the top of the dialog are 2 selection lists:
You can select a connection name and / or number from these lists or specify a new number or name:
At the bottom are 3 buttons:
Details concerning the calculation algorithms for steel connections can be found in the main Autodesk® Robot™ Structural Analysis help file (see Steel Connection Design).