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Good morning at all.

Referring to the Start.Prof - Seismic Wave Propagation Analysis Chapter (link: https://passuite.com/kbase/doc/start/We ... icWave.htm), I need a clarification regarding the second check of the Strength analysis for ASCE 2001 (ALA): in the equation reported in the attached jpg, what does the term σq stand for? And how can I calculate it?

Thanks in advance to anyone who wanted to help me.

it is ring bending stress. Calculated using nonlinear FEA https://www.passuite.com/kbase/doc/star ... Stress.htm

Thank you very much, Alex.

Regards.