This text combines the previous two, Computer Aided Structural Design and Advanced Techniques in Structural Design, into a single volume. This operation was not a simple "Copy & Paste", but a total revision, which required many additions and eliminated almost nothing. There has also been a reorganization of the subjects, so that some topics have been moved to Part I, dedicated to the linear elastic calculations, making Part II a little less "meaty", but enriched with some practical examples. All the examples, old and new, have been redone using ABAQUS in its version 6.14-2, but they can be repeated using any other Finite Element code; indeed, the encouragement is to try to compare the results obtained with other programs.