EN
A method of stiffened plates modeling is being described in the paper. The method consists on dividing a construction into plate elements and stiffeners. Each of these elements is calculated independently, taking unknown forces of co-operation between these elements into consideration. These forces are determined from the conditions of the continuity of displacements on the common surfaces of the plate elements and stiffeners. The plates under consideration are made of ferroconcrete and the stiffeners are on the one side of the plate.