This paper presents the spatial stability analysis and global stability checks according to the "General Method" of DIN EN 1993-1-1/clause 6.3.4 for complete steel structures of thin walled open sections. This is a software based design procedure for evaluating the global eigen-solutions (eigenvalue acrop and eigen- shape) using integrated stability analysis and standard check. It is compared to the classical method using different calculation models as well as suitable software for stress analysis and the global spatial stability analysis and check. For the numerical analysis (as it is the crucial point of the method) the 14 DOF beam-column finite element of ConSteel is used. The two examples demonstrate the very safe and uneconomic restrictions of the German NA of clause 6.3.4. According the author's experiences and [16] it is not recommended to use them.