Design basis of Lithuanian steel and aluminium structure codes and their relations to Eurocode

The background in the development of national building technical regulations for the design of steel and aluminium structures is discussed. National Design Standards are under consideration in comparison with the main concepts of EC3 and EC9. Standard features of design parameters of materials, partial safety factors and metallic cross-sections are considered in this article. The resistance criterion of members in combined compression and bending is analysed. The effect of member slenderness and fillet weld connections on design results given by National technical regulations and Eurocodes is illustrated.