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FE Model[Two Beam+Shell/Single Beam]: If the 'Two Beam + Shell' option is selected, the top and bottom flanges will be modeled as beam elements, while the remaining portion will be modeled as a shell element.In the absence of this option, a complete section will be defined as a single beam and connected to both bottom and top flange nodes using rigid elements, based on the user's selected preferences.
If you choose two beam and shell elements, the rigid definitions below become not applicable (N/A).
Rigid Section Top: A diaphragm can be linked to the top flange node using a rigid beam element. Please designate a section for this purpose.
Disable Bottom Rigid Line [NO/YES/NO]: Choose "Yes" if you prefer not to generate a rigid beam element between the diaphragm and the bottom flange node.
Rigid Section Bot: A diaphragm can be linked to the bottom flange node using a rigid beam element. Please designate a section for this purpose.