Gasket Thickness

Is this piping model for the stress analysis of a system ?

Is this thickness question for input into CAESAR-II or AUTOPIPE analysis ?

If so, IMHO it makes no difference to the results of the analysis.

Please explain......or is this just a "question that came up in the lunchroom"

Thanks for replying to my question. I understand that the thickness of gaskets needs to be accounted for when creating the piping layout, otherwise at the last connection the joint will not mate properly. Now, should I use the compressed thickness of the gaskets or the uncompressed thickness when creating the piping layout?

Thanks