Actually, Vivek, I strongly recommend that you shut down Caesar and become familiar with what ever piping code is governing your work. The question you ask indicates not simply a newness to Caesar, bot to stress analysis in general.

I'm not trying to put you down, as we all started off knowing nothing laugh . But, Caesar is just a tool. Unless you have an understanding of the applicable code and the engineering fundamentals, punching entries into a program is going to be a waste of time.
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Edward L. Klein
Pipe Stress Engineer

All the world is a Spring