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.
SAFE is the ultimate tool for designing concrete floor and foundation systems.
From framing layout all the way through to detail drawing production, SAFE integrates every aspect of the engineering design process in one easy and intuitive environment.
SAFE provides unmatched benefits to the engineer with its truly unique combination of power, comprehensive capabilities, and ease-of-use.
Using CSiBridge, engineers can easily define complex bridge geometries, boundary conditions and load cases.
The bridge models are defined parametrically, using terms that are familiar to bridge engineers such as layout lines, spans, bearings, abutments, bents, hinges and post-tensioning.
The software creates spine, shell or solid object models that update automatically as the bridge definition parameters are changed.
The innovative and revolutionary new ETABS is the ultimate integrated software package for the structural analysis and design of buildings.
Incorporating 40 years of continuous research and development, this latest ETABS offers unmatched 3D object based modeling and visualization tools, blazingly fast linear and nonlinear analytical power, sophisticated and comprehensive design capabilities for a wide-range of materials, and insightful graphic displays, reports, and schematic drawings that allow users to quickly and easily decipher and understand analysis and design results.
