Master`s thesis addresses problem of stressed skin design of one storey steel buildings. The first part deals with different structural systems, where stressed skin design is used to provide the horizontal stiffness. The stiffness is provided by the profiled sheeting that is the main structural element in the roof structure. There are two cases described. The first one, where the profile sheeting is fastened to the rafter and second one, where the sheeting is fastened to the purlins. Further on, the details are described that are relevant for diaphragm bearing capacity. The second part deals with an example of single storey steel building, where the stressed skin design is performed. The plan of the building is 20 by 45 meters. Ten frames are placed in the short direction. The stressed skin design is described according to publication ECCS (ECCS, 1995) and according to Höglund (Höglund, 2002). The profiled sheeting was also used as the support to prevent lateral buckling of the rafters. The design of fasteners and the interaction between main frames and profiled sheeting is presented. The objective was to achieve low weight of the structure.