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Volume II: Strength of Materials

Volume II of this series, currently in preparation, is an introduction to the design of structures in bending. It builds upon the lessons learned about axially-loaded structures in the first volume, and continues the theme of introducing students to the entire creative continuum of the structural design process.

The profile of this highrise building, which was designed as a theoretical exercise by Waclaw Zalewski, follows the shape of a high-efficiency Michell structure. Because of this shape, less wind bracing steel would be required per unit floor area than in a more conventional highrise configuration.

The first chapter is a dialog between a structural engineer and an architect. WE look over their shoulders as they work side-by-side to design a small building for a national park entrance. Their words and sketches bring out a host of issues about design process, choosing and laying out a structural system, and the role of structure in the space and form of buildings.

Succeeding chapters, which include a full repertoire of structural mathematics, explore flow patterns of forces in structural bodies; material properties; bending behavior; beam design; column design; grids, plates, and slabs; and designing whole framing systems for buildings. At appropriate points, we encounter the engineer/architect team again as they design other buildings.

This truss illustrates in a simplified manner the flow of forces inside a simply supported beam that is subjected to a uniform loading.

The guiding principle for this second volume, as for the first, is the finding of good form for structures, in this case structures made up of beams, grids, plates, slabs, columns, and frames. The ability to diagram the flow of forces in any structural body is taught step by step. Simplified truss models permit the use of graphical techniques from Volume I, Statics, to find forces and stresses in various regions of flow patterns.

ribslab-view 1.jpg (7778 bytes)An illustration of a one-way concrete joist floor system. The second volume will contain advice on selecting, laying out, and proportioning framing systems in every material.

Condensed "Design Guides" in the back of the book offer comprehensive information and preliminary member sizing rules for the common structural systems in wood, steel, masonry, and concrete. When coupled with the information and techniques developed in the body of the book, these guides enable a student to function confidently as the designer of structural systems for framed buildings.