Modelling of roof bracings of single-storey industrial buildings

The rules included in the standards EN 1090-2 and EN 1993-1-1 are not fully compatible in terms of the industrial buildings roof bracings modelling, therefore they also do not guarantee a reflection of the actual behavior of these bracings in proposed, normative calculation model. This work, by example of single-bay industrial building (hall) with vertical roof bracings, presents the results of elastic spatial analysis of the structure with geometrical imperfections, obtained using various calculation models. These results were referred to the reference model with global and local imperfections of the roof structure of the hall and compared with state of forces that can be obtained from the model given in standard rules. This allowed to conclude about the deficiencies of this model and to point out the need of verification of the standard provisions in the field of roof bracing.