Here is the list of improvements in Autodesk Robot Structural Analysis Professional 2021.
These new code regulations can be specified in the Job preferences dialog under the Steel/Aluminum structures option of Design Codes. See Design Codes.
Sequential Loading for Stories. Sequential self-weight now builds construction stages for each story and collects results into a single load case. In successive iterations, the deformations for a given story are calculated without considering the stiffness of the stories above. See Self Weight Load.
Detailed Pressure for Panels from Wind Simulation. You can now specify whether to apply pressure as an average load for a panel or as a load map with relevant finite element mesh. By not selecting an average load, you can obtain an image of pressure maps on finite elements. This is particularly useful for wind load generation on curved geometry buildings such as silos. See Wind Loads Simulation.
Use a Local Copy of Network Files You can now work from a temporary local copy of a structure model when working over a network. The file is synced with the source network file when saved and closed. This is useful when accessing projects with intermittent connectivity over a network. See General Parameters.
Support for High-Resolution Monitors. Robot Structural Analysis now supports 4K high-resolution displays by improving text visibility and scalability of the user interface.