RK,

Thanks for your response,

1. My question is Pb primary bending stress. As per ASME SECTION VIII div2 , if we consider Pb the allowable is 1.5Smh

As per ASME B 31.3, sustained case(Primary stress) we are also considering bending loads due to W+P. why Sh allowable why not 1.5Smh as per Section VIII- Div 2.

Is the Pb Primary bending stress in Asme section - 8 div 2 is different with what we are considering bending stress in Sustained case in asme b 31.3?

If yes/ Please tell me what is that??

If my understading is wrong, please correct me.