Use this dialog to determine the appropriate distances between member sections protected against torsion. 
Access
- Click Upper flange or Lower flange in the Member Definitions - Parameters dialog. 
 
 
Dialog elements
- No lateral buckling 
  
-  Select this icon to ignore the lateral buckling effects during the calculation process. 
 
- Internal bracings 
  
- Opens the Internal bracings dialog, which allows you to define the parameters of lateral stiffening. 
 
- This option allows you to consider bars with internal bracings during the calculations. Internal bracings include: lateral stiffening of the analyzed bars, or limiting the buckling length.