Structurix is a calculation program: the analysis of structures based on the principle of the finite element method. It makes it possible to solve plane problems with elements: bars, beams, and triangular elements; and space problems with elements: bars, beams, and rectangular elements for the calculation of the board flex, triangular elements for the calculation of revolution solid. ElemFin allows the calculation of: displacements of each nodes, reactions to the supports, stress in each element.