Two new parameters have been added to the IS 456 design code to assist in the design of concrete columns. ULY and ULZ are used to define the ratio of unsupported to actual column length about the local Y and Z axes.

To include the design parameters for a IS456 design check, click on the Design, Concrete Page, and select IS456 from the drop-down list in the concrete design dialog.

When this design code option is selected, clicking on the Define Parameters button at the base of the dialog box will in turn open the Design Parameters dialog that will allow parameters to be added or added and assigned to specific steel members.

The definition of the parameters and their default values are as defined below: