The seismic design provisions for structural components of the lateral force resisting system have undergone changes in recent years to progress towards performance-based design. Current seismic design provisions for structural components take into account nonlinear behavior and displacement capacity instead of an allowable stress and displacement methodology. During this time, changes in the seismic design provisions for nonstructural components have focused primarily on the magnitude of applied forces and have not explicitly considered the behavior of the nonstructural components or their attachments. Because of the diversity of types and configurations of nonstructural components, it has been difficult to develop a set of guidelines for seismic design of nonstructural components that can be applied to all types of nonstructural components and their various means of attachment. There are however, some configurations of nonstructural component anchorage and bracing whose seismic behavior can be considered similar to that of building structural systems. Where this behavior can be identified, seismic design methodologies for structural component bracing and anchorage can employ similar methodologies as applied to structural systems.Changes are proposed for the seismic design of nonstructural components that incorporate design concepts that are currently used for the design of structural components, such as capacity design and ductile detailing. Examples are provided to demonstrate how the use of these structural design concepts can improve the expected performance of nonstructural components subjected to earthquake forces.
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