Dear Arajagopal:
For UKOOA, one f2 value is for a whole job. So all load cases of the job are stuck with one f2 value. If you want different f2 for diffrent load cases, all you can do is to create several jobs with the exact same model, except for different f2 values.
If you have choices, ISO 14692 is better FRP code to use. It allows you to use different f2 values for different load cases in a job.
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Xiaojun Lu
Intergraph CAS