In this article we consider issues of structure designing of reinforced concrete rods with cirle cross-section. There are theoretical aspects of rod torsion in the article. We analyse actual codes and standards and found out that there is no any methods of rod calculation with circle cross-section. Methods of calculation are given in the article. Field tests of rod torsion were carried out. In article you can see main points of test, the procedure of test and results.
Keywords: rod torsion, rotational moment, roll, reinforced concrete, verification test in situ, designing of reinforced concrete rods, shear reinforcement