**Design of Steel Structures**

Boris Bresler, T.Y.Lin & John B.Scalzi

Wiley Topan, 1968

x + 830 Hal.

Rp. 76,000 ,-

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**Preface**

During the last four decades structural engineering has undergone many significant changes. The breadth of knowledge of structural theory has expanded through the elastic range and into the inelastic range of the material behavior. The application of the principles of theoretical mechanics has encouraged greater sophistication in the analysis and design of steel structures. Laboratory investigations and field studies have been conducted to correlate actual behavior with theoretical predictions. Improved constructional steels and fabrication methods have provided further impetus for the development of sound rational design techniques.

The objective of this textbook is to present a rational approach to the design of steel structures and, wherever possible, to correlate this approach with current design practice. We believe that good design practice must, of necessity, be based on a sound knowledge of the fundamental principles of structural mechanics, a thorough understanding of the behavior actual structures, an appreciation of their relationship to an idealized structure, and an awareness of the practical requirements such as fabrication, feasibility, safety, and economy. Therefore the reader will find these concepts emphasized throughout.

This book is intended for all engineering courses concerned with the design of steel structures. The contents permit its use in elementary and advanced courses in structural design and, as such, also serve the needs of the practicing engineer as a reference source for special topics.

The reader is expected to have a knowledge of the general principles of statics, dynamics, mechanics of material including material behavior, and structural theory. It is possible that the student can study structural theory concurrently with the elementary material presented. Various provisions of pertinent specifications and codes are examined in the light of rational analysis, empirical evidence, and practical requirements. Assumptions and limitations of theory and design procedures are discussed. Each chapter contains a reference list of other sources which provide a more complete treatment of particular topics.

The text contains numerous illustrative examples, each of which is intended to assist the reader in his understanding of a certain principle or particular design method. The examples cited are intentionally focused on a specific topic to enable him to master the point presented and, subsequently, to relate it to other more complicated design situations. Problems included at the end of chapters provide the student an opportunity to develop his facility and confidence in the principles discussed in that chapter.

An elementary course in design of steel structures would include the major portion of Chapters 1, 2, 5, 6, 7, 8, 9, 10, and 11. Some of the material in these together with the remaining chapters 3, 4, 12, 13, 14, and 15 usually is taught in more advanced courses in design.

The first chapter discusses the basic principles of structural design, the behavior and safety of structures, and general considerations of design procedures.

Chapters 2 and 3 deal with the properties of the constructional steels and their behavior with respect to applications in weldments and fatigue conditions.

Chapter 4 discusses the fundamental principles of the behavior of steel as an elastic and plastic material. This chapter is basic to a full understanding of the structural concepts presented in later chapters.

Chapters 5 and 6 discuss bolted, riveted, pinned, and welded connections. The use of high-strength bolts is noted in Chapter 5. Attention is directed to the use of simple connections in order to illustrate the basic principle. Complex connections are discussed in later chapters in conjunction with their use in different types of members and structural frames.

Chapter 7 is concerned with various types of tension members including rods, bars, shapes, and cables. Built-up members are included as well as connections and splices.

Chapter 8 discusses the theoretical aspects of the bending and torsion of beams. The discussion includes bending of simple, unsymmetrical, and open sections. Torsion of free and restrained sections of open, tubular, and cellular cross section is included. Special topics of tapered and curved beams and combined bending for the elastic and plastic range are also discussed.

Chapter 9 discusses the fundamental problem of buckling of prismatic members, frames, and plates. Basic theory is presented for the usual members used in structural design.

Chapter 10 deals with the design of compression members using the principles evolved in Chapter 9.

Chapter I1 discusses the design of beams and girders with respect to bending, lateral instability, deflections and economy. Elastic and plastic designs of continuous beams and composite beam design are included in this chapter and the development of the criteria for designing a thin-web plate girder is presented in detail.

The subject of the design of buildings and bridges is so broad that only an introductory treatment is included in Chapters 12 and 13, respectively. Loads, types of structures, and special topics as well as practical examples are included in each chapter.

Chapter 14 deals,with the principles of design when using sheet steel as the principal structure material. This is a relatively new development in steel design. Basic principles and practical design expressions are discussed in relation to compression members, beams, and panels.

Chapter 15 introduces several types of structures of relatively recent development which are being designed with steel components. These structures include orthotropic bridges, curved bridges, cable-supported bridges and buildings, space structures, prestressed steel structures, tubular shell and semimonocoque high rise structures. Full discussion of design methods for these complex structures is beyond the scope of this book and the material presented is of an introductory nature.

Most of the material presented is not original and although individual acknowledgments of the many sources of information are evidently not possible, full credit is noted whenever the source can be identified.

Every effort has been made to eliminate errors, but we would appreciate notification from the reader of any errors.

We are indebted to many organizations and individuals for their help and assistance and permission to reproduce photographs, designs, tables, and graphs. Wherever possible, credit is noted in the text.

We wish to acknowledge the help of our associates and to thank Mrs. Andrea G. Vance and Miss R. Meade for typing the revised manuscript.

**Boris Bresler **

**T. Y. Lin**

**John B. Scalzi**

December 1967

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