The environment of structural design changes from day to day, corresponding to the development of computer tools. Recently “Microsoft Office Excel” installed solver which enables executing optimization problem. Moreover, “Windows Script Host” enables the user to automate operation process on Windows machine. By utilizing these tools, we try to introduce optimization methods to structural design in practice. Two problems are implemented herein. First is searching of optimal form of a bridge with tree structure system. Second is searching of optimal column position of a steel latticed shell roof.
