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. Features: Enables readers to distinguish between the flexibility and the stiffness methods of structural analysis. Clarifies the procedures in the direct stiffness methods as applied to discrete structures and use of these for the analysis of 2D and 3D structures. Presents treatment of Finite Element Methods as a logical extension of the Direct Stiffness Method. Provides sufficient solved examples and didactic problems (with solutions) focusing on the analysis of statically indeterminate structures. Treats discrete and continuum structural analysis using similar matrix analysis procedures. Focused on problem solving through programming, this book guides senior undergraduate and graduate students in structural and civil engineering.