You will have to manually define the live load reduction parameters based on the number of stories supported. The information for this reduction is given in IS:875. Once you define this and define the live load as reducible, you can use ETABS for live load reduction.
Defining manually means one will have to assign factors to LL for different floors and then combine in the load case. This can be done even without assigning the LL as reducible. Then it is not necessary to make the LL as reducible.Is it correct?
