Predicting formurae for the ultimate resisting moment of WF-BW connection and the ultimate moment capacity of H-section beam are presented. These predicted values are compared with available test results. It is shown that they are in good correlation. The basic principle of moment resisting connection is that the ultimate moment resistance of connection should not be smaller than the ultimate moment capacity of the beam connected. It is demonstrated that the test specimens which do not comform with the principle develop relatively poor plasticrotation.
