The model shows how to perform precise ultimate and serviceability limit state design checks and stability analysis despite very small torsional moments in steel beams. It shows how shear stresses and warping torsion are taken into account in the beams to be designed. A technical image illustrates the cross-section of the beam, as well as the governing design parameters and their influence on the load-bearing capacity. All information is based on standardized calculation methods and serves as a practical example of how to deal with limit states.