Hi Jarg,

Please reffer your query in caesar forum.. and see sticky topic for allowables..

To guide you in advance... please read ASME B31.3 chapter 2 and you will have your answer. Sorry if I will not answer you directly but this is a "requirement" or "mandatory" to read the code before going to a software as stress analysis. also try to find books for the job, one basic book will be Pipe Stress analisys by Sam Kannappan..

Regards!