Within the column module of StruCalc there is the ability to calculate a cantilevered column.
The column module typically assumes a pin-pin connection for the end supports, but the end condition can be changed to a cantilever inside the module. Once a cantilever has been designated by selecting the Cantilever Column checkbox the Column End Condition or K(e) value will change from 1 to 2.1 and the top of the column will then be unrestrained.
This is particularly useful for posts that are supporting lateral loads of some kind such as:
You can view the representation of this type of a column in StruCalc by clicking the thumbnail below
Follow this link for more information on StruCalc columns