STAAD.PRO is a structural analysis and design computer program originally developed by Research Engineers International at Yorba Linda, CA in 1997. STAAD Pro is a structural analysis and design software that is widely used in the design of buildings, bridges, towers and other structures. STAAD Pro is a powerful tool that allows engineers to quickly and easily design and analyze complex structural models. In late 2005, Research Engineers International was bought by Bentley Systems. It is the world’s number one structural analysis and design software that supports Indian and all international codes. Structural engineering firms, structural consultants, departments in construction companies, owner/operators, and government agencies, and offshore platform designers’ use this software extensively.