You can add a support concrete element to the Base Plate connections. This option is available for:
The concrete element is taken into account whether the steel element is a column or a beam, slanted or not (with the exception of the Corner Base Plate connection, which can be assigned only to vertical elements).
In the Contextual Menu:
And in the Command Line:
In this case, the Code Checking module will have the Concrete class available:
In this case, the Code Checking module will not have the Concrete class available. It will be set by the concrete element:
Now the concrete element is part of the connection, just like any other element of the connection.