JUSTIFICATION AND CHOOSING OF RATIONAL CONSTRUCTIVE CROSSSECTIONS, POSSIBILITIES OF USING IN DIFFERENT CONSTRUCTION DIRECTIONS

The development of modern construction is closely related to the efficient use problemof building materials in terms rational materials’ strength properties. search rationalstructure geometric parameters, and providing same bearingcapacity important question building. purpose article carry out acomparative analysis characteristics different reinforced concretecross-sections, consideration existing methods for calculating bearing capacity andassessment stress-strain state concrete beams.The steel-concrete structures using paid much attention theworld practice. widespread leads economy materials,reducing complexity manufacture, reducing time erection. concreteleads significant steel, set new tasks engineers time: ownweight parameters cross-section without capacityin whole. With that would meet requirements usage ofdifferent building, nowadays pays improvement thesteel-concrete elements. During structures,significant changes have been made ensuring joint operation concreteand steel. Such require constant research order reduce their ownweight, financial costs, etc. finding a structure geometricparameters, using, as well currently