Hi Richard,

16" pipe, design temp=80 degC, Design pressure=27 bar

Using B31.3 code, After creating buried piping (file name added with B), stress failure is happening under expansion case.
Stress is passing only when
Providing the loop (or) Providing Anchor at the center of the long run pipe.


Using B31.4 code, After creating buried piping, stresses are failing in Operating, Expansion & occasional cases.

i have given correct soil properties only as per client specification.

Kindly advice the right approach to use UG pipe analysis in CAESAR-II in both ASME codes.


Thanks,
Kannapiran.K