When bracing is incorporated into the earthquake safety design of a building, it is generally constructed of steel because steel is flexible
In construction, a bracing system is used to stabilize the main girders, contribute to the distribution of load effects, and to provide resistance to compression chords.
The brazed frame system is designed to resist prevailing wind and earthquake forces. It uses two orthogonal concepts in bracing which are; vertical bracing system that provides lateral stability and load paths, and another type of orthogonal concept is horizontal bracing system used to transfer horizontal forces.
The bracing system is generally constructed of steel because, steel is efficient in providing stiffness and strength needed to resist the seismic load. Consequently, steel is expected to buckle and yield during strong earthquake shakes.
Thus, steel is generally flexible.
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