Timber, steel, and concrete are common engineering materials used for designing and constructing structures. The choice of material depends upon the type of structures, availability of material, and the preference of designer. The design practices the code requirements of each material are very different. In this updated edition, the elemental designs of individual components of each material are presented, together with theory of structures essential for the design. Numerous examples of the designs of complete structures with respect to each material have been included. A comprehensive data base comprising materials properties, section properties, specifications, and design aids, has been provided to make this a complete book.