CSI PERFORM-3D

340 CSI PERFORM-3D v7.0.0 CSI PERFORM-3D was designed for nonlinear analysis and performance assessment for 3D structures. Displacement Based Design Traditionally, earthquake-resistant design has been strength-based, using linear elastic analysis. Since inelastic behavior is usually allowed for strong earthquakes, this is not entirely rational. Strength-based design considers inelastic behavior only implicitly. Displacement-based (or deformation-based) design considers inelastic behavior explicitly, using nonlinear inelastic analysis. Displacement-based design recognizes that in a strong earthquake, inelastic deformation (or ductility) can be more important than strength. PERFORM-3D allows you to use displacement-based design. Implementation of ASCE 41 Procedures for displacement-based design using inelastic analysis are specified in ASCE 41, ”Seismic Rehabilitation of Existing Buildings