This book covers code development for structural analysis and includes topics from finite element methods such as modeling and analysis of continuum structures. It explains the concepts showing derivation of necessary equations, relationships, and steps in solving structural analysis problems. It contains worked examples, problem sets, and ample Scilab and Octave codes to teach structural analysis techniques using these softwares. Access to computing facilities has been increasing from time to time, and a typical college student nowadays owns a laptop or has access to a personal computer at home or the college. Besides, there are appropriate software that assist in performing routine and complex matrix operations like matrix multiplication and inversion. The second reason for writing this book is to overcome those difficulties associated with formulating and solving structural analysis problems through programming or coding on a suitable platform step by step and interactively. The book aims to provide concise reading materials explaining the concepts and showing the derivation of necessary equations, relationships and steps in solving structural analysis problems. It also contains worked examples, problem sets and ample Scilab and Octave code to teach structural analysis techniques using MSAFEM. Scilab and Octave are free and open-source software for scientific computation and visualization. In addition to being free and open-source, they offer excellent platforms for practicing computer-aided structural analysis tasks. Since the syntax for Octave is identical to Matlab, the Octave program codes in this book can be executed in Matlab directly without any modification.