![]() Typical values of Ωo range from 1.0 to 3.0 for different structural systems. Per the AISC Seismic Provisions D2.6, columns and base plates belong to this kind of elements. Some members or connections on the load path whose inelastic behavior may cause poor system performance may be deliberately affected by an over-strength factor Ωo to amplify the seismic load, and so force them to perform elastically. ![]() Most seismic force resisting systems (SFRS) rely on the dissipation of energy through inelastic deformations. The ACI seismic provisions apply to anchors in structures assigned to Seismic Design Category (SDC) C, D, E, or F. The ACI treats separately tension and shear, and then it combines both effects in an interaction diagram. This document is an overview of the ACI 318 provisions for anchor bolt seismic design.Īnchor rods are usually subject to a combination of tension and shear forces. ![]() The seismic design of anchor rods is included in the Chapter 17 of the ACI 318-19.
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