Hi habib,

Thanks for your reply. We are using this case to check the sagging of pipe also. Kindly let me know your views on the same. In this case we are only considering the pipe weight, and ambient temperature. As per my knowledge it will help us to decide the sagging of a pipe when there is no any fluid inside it. but no doubt that we are checking the sustain condition also.
What I found in both that there is not much difference but yes when it comes to spring hanger there is a considerable difference in load.

Regards,
RK