Interaction diagrams for reinforced concrete circular cross-section

The procedure for creating interaction diagrams for reinforced-concrete circular cross-sections, based on HRN EN 1992-1-1, is described in the paper. Due to introduction of new concrete strength classes, with somewhat different parameters for the stress-relative strain diagram, it has become necessary to develop new interaction diagrams. The computation procedure based on which circular cross section interaction diagrams were made for all concrete classes, was conducted. The use of these interaction diagrams will simplify dimensioning of reinforced-concrete circular cross-sections.