The main objective of the book is to acquaint the engineers about the computer based techniques used in structural analysis. This textbook is primarily written as a basic learning tool for undergraduate and postgraduate students in the departments dealing with the mechanics of solids and structural systems. Based on the knowledge of classical methods of structural analysis, the reader is introduced to "Matrix and the Finite Element Methods" and then exposed to advanced topics in a more gradual manner. The book is self contained and most of the background materials required for the analysis of structures have been dealt with. A large number of diagrams and illustrations help in easy understanding of the text. The book presents ?Matrix?, ?finite elements?, ?structural analysis? and ?computer implementation? in a unified and integrated manner. Computer programs and structural analysis have progressed simultaneously throughout as the text as the matter presented in primarily meant for large sized structures. All the computer codes are presented in "FORTRAN" AND "C".