https://mechcalc.net/blog/en/tags/annex-p/ Recent content in Annex P on MechCalc how-to Guide https://mechcalc.net/blog/og-default.png https://mechcalc.net/blog/og-default.png Hugo en Thu, 02 Jul 2026 10:30:00 +0200 https://mechcalc.net/blog/en/posts/bs7910-annex-p-ref-stress-tutorial/ Thu, 02 Jul 2026 10:30:00 +0200 https://mechcalc.net/blog/en/posts/bs7910-annex-p-ref-stress-tutorial/ A guide to BS 7910:2019 Annex P: it explains the physical meaning of the reference stress σ_ref and the reference-stress method, the equivalence of σ_ref and the limit load P_L, how it gives the FAD horizontal axis L_r, the general framework and net-section degradation, the plastic cut-off L_r,max and flow stress, and the calculation steps — with original diagrams and a live worked example.