The Northridge earthquake exposed the need for a more considered approach to seismic design. In the case of braced frames, this led to a closer examination of the behavior of the system and its components at large drifts. Engineers changed their approach to analysis, proportioning, and detailing of braced frames to avoid connection failure and other unfavorable behaviors they had observed. Simultaneously, lessons learned in the research on steel moment resisting frames, such as examination of expected material strength, were applied to the design of braced frames. The post-Northridge era also saw the introduction of the buckling-restrained brace as a useful tool in seismic design. …