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George Antaki, P.E.

ASME Project Number STP-PT-034 - Alignment of Sustained Load Stress Indices in the ASME B31 Code 

The first objective of this report is to address the discrepancies between the ASME B31 Code books including (a) inconsistency of design equations, (b) inconsistent use of stress indices and stress intensification factors, and (c) use of fatigue-based factors to calculate stresses due to sustained loads.

The second objective of this report is to propose design equations for sustained loads which would be technically sound, practical (simple) and could be applied consistently by all ASME B31 Code books and the ASME Section III Code, Section NC/ND-3600.