Seismic design software

Air Worldwide provides risk analysis and catastrophe modeling software and consulting services. It has offices in Boston, San Francisco, and several major cities in other countries. It hires civil engineers to perform seismic design studies and to prepare plans for structural engineering. 

A variety of linear and nonlinear (geometrically and/or material) and static or dynamic analysis algorithms are commonly available in commercial stmctural software (e.g., Gantes and Fragkopoulos 2010). However, in the vast majority of common steel buildings, linear static analysis is used in design practice for all loads and load combinations, with the exception of seismic actions, for which frequently both equivalent static as well as response spectrum dynamic analysis are carried out. The principle of... 

---