If I understand your question, you are asking why doesn't Caesar II set up all the load cases above automatically? The answer is that it doesn't set up occasional load cases because there are too many variables that may dictate different methods of arriving at the correct answer. For example perhaps your uniform load is seismic, or perhaps it is snow load. The seismic may require an SRSS combination whereas the snow load would not. Or perhaps your uniform loads are accelerations on an FPSO, which may require a somewhat different approach than seismic. And F2 as in the above example could be anything, not only a relief load. It could represent a weight that belongs in the SUS case. So, we really prefer that the engineer be thoughtful in the application of correct load cases for their particular application. If Caesar recommended these load cases, many people would not stop to think about the correct application and would simply use whatever Caesar decided, a method we really don't approve of.