Bending Coefficient (Cb)

Use this function to enter the Bending Coefficient required for calculating the allowable bending stress or the design strength of the compression flange subjected to the bending moment about the strong axis (y-axis).

From the Main Menu select Design > Design > Steel Design > Bending Coefficient (Cb).

First, select the members in the model and enter the following :

Option

Select Add/Replace or Delete.

Add/Replace: Add the newly entered value or replace the previously entered value.

Delete: Delete the entered value. Data entry is not required when deleting.

Bending Coefficient

Enter the bending coefficient.

Cb: Bending coefficient [Default = 1.0] (refer to Note 1)

Calculate by Program
Select this item if the value is to be auto-calculated by the program (refer to Note 2).

 : Apply the entered value to the selected members.

 : Close the entry Dialog Bar.

Note 1
If the value of the bending coefficient (Cb) is not entered, the default value of Cb = 1.0 is applied.

Note 2
When the value of the bending coefficient (Cb) is auto-calculated by the program, the moments about the member's strong axis at both ends are used.

Note 3
When the value of the bending coefficient (Cb) is repeatedly entered for the same members, the value will be updated to the last value entered.

Note 4
The entered values for the bending coefficient (Cb) can be reviewed in the data table arranged in the order of element numbers. The user may Modify/Add and Delete items in the data table.

Access the data table following the procedure below.

From the Main Menu select Design > Steel Design Parameter > Steel Design Tables > Bending Coefficient(Cb).

From the Tables tab of the Tree Menu select Design Tables > Steel Design Table > Bending Coefficient(Cb).