Hello Fellow Stressers,

Why does the Code do not consider the maximum stress intensity from the combined (Hoop, Longitudinal & Torsional) Stress and compare it to the uniaxial state of stress?

It separates hoop & longitudinal stress evaluation. Hoop stress is used to establish the thickness. While combined bending and torsion is used for longitudinal stress evaluation (in which 2 principal stress is created S1-S2
I believe there is a separate output in stress software considering the hoop, longitudinal and torsion stress states combined (Max Stress Intensity SI).

Thanks,