Hi,

I realize that ASME B31.3 directs engineers to use the nominal thickness when calculating SIF values per the code. My question is, when calculating SIFs using FEA would it be appropriate to use the corroded thickness in the calculation or should the nominal thickness still be used.

For reference, I can most commonly looking to determine SIFs for dummy legs and stanchions (things that are not directly covered by ASME B31.3 formulas).

Thank you