Hello Stressers!!!

For occasional stress evaluation in ISO 14692 which one of the two load case is correct (assuming U1=seismic load)

1) Load Case 1:

W+T1+P1+U1

or

2) Load Case 2:

Same as ASME B31.3 set-up (Sustained + Occasional Load). I will not write down the details since every stress engineer already familiar with this.


I think it is Load Case 1. If this is the case, then for mix piping (FRP & Steel), the load case for occasional stress is different and must be set-up accordingly. One FRP vendor assume the occasional stress is same for both Code, and they use the load case 1 for both codes which is obviously not in accordance with ASME B31.3.

Please correct me if I'm assuming it wrong.

Thanks & Warm Regards