Function
- Input the Laterally Unbraced Length that is used to calculate lateral torsional buckling resistance in the compression flange of I Girder or top flange of Tub Girder.
If the laterally unbraced length is not entered, the span length obtained from Span Information will be applied for the laterally unbraced length. If the Span Information data are not defined either, the corresponding element length will be used as the laterally unbraced length. The value input here has higher priority than the value obtained from Span Information or the element length.
Call
From the main menu, select [Rating] tab > [Type : Steel Bridge] > [Assessment Code : CS454/20] > [Assessment Input Data] group > [Assessment Parameters] > [Laterally Unbraced Length]
Input
Select the members in the model, and then enter the following:
Option
Select Add/Replace or Delete.
Add/Replace : Add the newly entered values or update the previously entered values.
Delete : Delete the entered values. Data entry is not required when deleting.
Unbraced Length
This option is not applicable for the CS454 assessment.
Laterally Unbraced Length
Enter the laterally unbraced lengths.
Lb : Laterally unbraced length
Do not consider : Select this item to neglect the lateral torsional buckling.
Torsional Unbraced Length
This option is not applicable for the CS454 assessment.
: Apply the entered values to the selected members.
: Close the entry Dialog Bar.