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The aim of the paper is to present methods of FEM scaffolding models building based on the results of laboratory tests. Scaffoldings consist of various components. Stands, transoms, braces are usually modelled as frame elements using geometric data and material properties. Decks are structures of complex geometry and their modelling requires simplifications calibrated on the basis of tests resulting with horizontal stiffness of this scaffolding part. The flexibility of the stand-transom joints should be modelled following two laboratory tests, i.e. with this connection subjected to moments acting in each of two directions. The numerical model of the entire scaffolding must be then verified in a global test, where the behaviour of the entire scaffolding with the set of horizontal and vertical forces applied is examined. Each simplifications must guarantee that the results obtained in the calculations are on the safe side. On the other hand, the differences between the results of calculations and laboratory tests are mostly due to these simplifications.
