The ever-increasing demand on engineering to lower production costs to withstand competition has prompted engineers to look for rigorous methods of decision making, such as optimization method, to design and produce products both economically and efficiently. These techniques, that reached a degree of maturity over the past several years, are being used in wide spectrum of industries including civil engineering structures, aerospace, automotive, chemical, electrical and manufacturing industries. With rapidly advance computer technology, computers have become more powerful, and correspondingly; the size and the complexity of the problems being solved using optimization techniques are also increasing enhance the creative process of conceptual and detailed design of engineering systems