The matrix force method has been systematically developed for the analysis of beam and frame structures. It helps develop the matrix stiffness method from a basic spring element, and this is extended to the analysis of beams, trusses, plain frames, grillages, and space frames. Using computer programs (manual, automatic, or the direct force method extending toward automation), this book interactively introduces matrix methods of structural analysis. In addition to work and energy, it also discusses the concepts of stresses, strains, strain displacement relationship, and plain stress and strain. Features: • Explains force, displacement, and stiffness via the matrix perspective. • Reviews full programming code for each problem. • Provides the modern concepts of force method that leads toward automation of the force method, such as the direct stiffness method. • Discusses effect of temperatures exclusively. • Includes the macro language Matrix Analysis Interpretive Language (MAIL) as an extension of analysis interpretive treatise with examples, exercises, PowerPoint slides, and illustrative problems. The MAIL executable, guide, and codes are provided on the website of the book. This book is aimed at senior undergraduate and postgraduate students in structural engineering.