D. To assign secondary members

To assign members to be considered as "secondary" members per the Chinese steel code, use the following procedure.

The members into which a secondary member frame will not be considered as restrained when determining automatic effective length calculations.

On the Chinese Steel Design ribbon tab, select the Secondary Member tool in the Settings group.

The Assign Secondary Member dialog opens.

Use one of the following methods to select members for assignment:

Option	Description
To assign to a selection	select one or more members in the model view window and then select the Assign to Selected Beams option
To assign to all the members in the current view	select the Assign to View option
To assign to a list of members	select the Assign to Edit List option and then type the member numbers in the text field

Tip: You can use tools found in the Beams group on the Select ribbon tab (e.g., Parallel tools) to easily select members for the Assign to Selected Beams option.

Click Assign.

Note: You can remove unwanted secondary member assignments by repeating step1 and then using the Remove button to remove assignments for all or selected members.