This report contains a description of fourteen experiments on wide-flange beams braced by purlins.These experiments were performed to study the bracing requirements of plastically designed beams.All fourteen beams performed in a satisfactory manner by delivering a plastic hinge of sufficient rotation capacity.The results indicate that beam bracing members need to possess only nominal bending stiffness. Failure in each test was precipitated by combined local and lateral-torsional buckling.