This paper describes a method for advanced verification of steel beam-columns applying the PASBC (Plastic Analysis of Steel Beam-Column) code. A general algorithm for calculation of the tangent cross-sectional properties is described for the deformation theory applied in this code. The steel material is modelled with multi-linear but non-reversible stress-strain relationship including the effect of the residual strains. A thin-walled beam-column finite element is applied involving the effect of warping with the seventh degree of freedom. The non-linear equation that includes the geometric and material non-linearity is solved by Newton-Raphson's approach. Within each step simple iteration is used to renew the geometric stiffness matrix. The parametric study on the advanced verification was carried out with two hot rolled I section such as HE 300 A and IPE 500. The initial curvature was calibrated on the column problem and it was used in the beam and beam-column problems. The results are compared with the relevant regulation of the Eurocode 3.

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