The paper considers verification of calculation of split I-beams with two symmetry axes on the general Eulerian stability at transverse bending in the plane Seat Post Sleeve of maximum stiffness in the software package (PC) LIRA-SAD.Calculations for various loads are given.Numerical calculation results in PC LIRA-SAP are Plastic Grinder compared with calculation by analytical formulas of S.
P.Timoshenko and V.Z.
Vlasov.Conclusions about calculation accuracy in PC LIRA-SAD in comparison with analytical formulas analysis are made.