A braced frame is used in structures subject to lateral loads such as wind and seismic pressure. The members in a braced frame are generally made of structural steel, which can work effectively both in tension and compression. The beams and columns that form the frame carry vertical loads, and the bracing system carries the lateral loads. The positioning of braces, however, can be problematic as they can interfere with the design of the façade and the position of openings. Buildings adopting high-tech or post-modernist styles have responded to this by expressing bracing as an internal or external design feature. In braced frames, the beams and columns are generally arranged in an orthogonal pattern in both, the elevation and on the plan. The structural members are joined using a pinned connection which does not transfer moments. This structured system is designed to withstand wind and earthquake forces. Members in a braced frame are not allowed to sway laterally. Due to bracing, lateral story displacement, story drift, axial force and bending moment in columns are greatly reduced.

This structural system refers to cantilevered vertical trusses that resist laterals, loads primarily diagonal members together with girders, and forms the web of the vertical truss. This is more used in steel construction and is suitable for multistory building in the low to mid-height range. This kind of system is also efficient and economical for enhancing the lateral stiffness and resistance of a rigid-frame system. One remarkable advantage of a braced-frame is that it can be repetitive up to the height of the building and is economical in design and fabrication.

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