Introduction with the program and work organization on course. Application metal constructions in buildings. The basics of design and working of the layout for portal frame buildings. Design of the purlins. Design of the bracings and stiffeners. Design of the main structural elements of the single-span and multi-span industrial buildings (the structural static system: frames with hinged connection between roof member and columns, frames with hinged supports columns, frames with fixed and hinged column bases, calculation and design). Design of the crane girders. Buckling- theoretical analysis, effective width concept. Effective cross section for cross section class 4 – buckling resistance due to axial compression stress. Calculation of buckling resistance due to direct stresses, shear stresses and their interaction. Welded girders- design of cross-sections, moment resisting reinforcement, ultimate limit state and serviceability limit state. Exercises: Numerical examples which are processed on exercises completely follow the content of the course.