Hi,dan:
I understand what you said.
If there is no piping support to lift off in my pipe system, using traditional methods to check the primary stress and pass, but if you use L5 method to check the primary stess and not pass, it is entirely possible. then Do I need to focus on the problems caused by L5 method?
I think using the L5 method is not correct, because it will no only be a span question which cause the primary failure, and sometimes that is linear and nonlinear , flexible and not Flexible question which also cause primary stress using L5 method.
as BOB said, the + Y to Y, and sometimes will make the calculation by L5 to pass.
So I think L5 approach is not desirable,
do you know what I want to do say?
please give me some comments.