It is the major purpose of this thesis to examine, through a practical engineering problem, the different aspects affecting the development of the structural concept. For this purpose, a prestressed-precast concrete structural system for multi-story construction is developed. After the introductory sections, the development of the structural system is explained in the third section. The section includes an analysis of the system, as well as a description of the individual component of the structure and their interaction. The analysis provides a corroboration of the adequacy of the concepts of the system. Illustration aid in the explanation of the problems involved. / Master of Science