Can someone clarify the difference to these two methods? In school using Eurocode, I remember checking columns against Pcr (Euler buckling) and if the axial load exceeded this, the column would buckle and fail. However, in A23.3 it seems to use a moment magnification method, which calculates additional secondary stresses due to additional drifts etc. This calculation does include the Euler buckling value in the equation, but nowhere in the code can I see that P < Pcr. Can someone please explain the difference between the two methods?
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