About CSI


Founded in 1975, Computers and Structures, Inc. (CSI) is recognized globally as the pioneering leader in software tools for structural and earthquake engineering. Software from CSI is used by thousands of engineering firms in over 160 countries for the design of major projects, including the Taipei 101 Tower in Taiwan, One World Trade Center in New York, the 2008 Olympics Birds Nest Stadium in Beijing and the cable-stayed Centenario Bridge over the Panama Canal. CSI’s software is backed by more than three decades of research and development, making it the trusted choice of sophisticated design professionals everywhere.

CSI produces five primary software packages: SAP2000, CSiBridge, ETABS, SAFE, and PERFORM-3D.

Each of these programs offers unique capabilities and tools that are tailored to different types of structures and problems, allowing users to find just the right solution for their work. SAP2000 is intended for use on civil structures such as dams, communication towers, stadiums, industrial plants and buildings. CSiBridge offers powerful parametric design of concrete and steel bridges. ETABS has been developed specifically for multi-story commercial and residential building structures, such as office towers, apartments and hospitals. The SAFE System provides an efficient and powerful program for the analysis and design of concrete slabs and foundations, with or without post-tensioning. PERFORM-3D is a highly focused nonlinear tool offering powerful performance based design capabilities.

With its uniquely qualified staff of professional structural engineers, researchers, academicians, and its worldwide involvement in the structural engineering community, CSI has been at the forefront of structural software development for nearly four decades. With CSI products you can be confident that you have the finest structural engineering software available, backed by a company with an unmatched record of innovation, and an unrivaled commitment to meet the ever-evolving needs of the profession.


CSI Italia was founded in 1990, with the scope of representing Computer and Structures, Inc. in Italy. CSI Italia not only provides marketing services for CSI, but also assistance in the use of the programs, localization of text, manuals and codes, development of dedicated software, teaching and seminars.

CSI Italia maintains a close bond with a structural design office: Studio Brunetta Bandini. This is done in order to keep the company more attuned to the engineering profession, for a better understanding of the problems that the programs are called to solve.

VIS was developed by CSI Italia, with the intent of expanding SAP2000 and ETABS design capabilities to meet specific Eurocode requirements. Development of VIS started in 2004 and continues through these days, striving to make the CSI programs ever more suited for use in the European market.

While VIS expands the capabilities of CSI programs to the design of reinforced concrete structures, CSI Italia also markets other programs, capable of expanding CSI design to other areas Precisely: SCS, dedicated to steel joints, and 3D Macro, dedicated to masonry structures.