Q.
A bit harsh on Arijit.

If you had:

A Read the Caesar manuals.
B Read the relevent codes
C Experiance in Piping engineering (not design)
D Read a few books (plenty available)
E Understood properly what is entailed in doing stress/flexibillity analysis

then you would have not asked this question. I am stunned that you would think Ceaser is a do all program.

I only hope your lack of effort in trying to understand this subject field does not result in injury or damage from your previous work.