Structural Mechanics , has become established as a classic text on the theory of structures and design methods of structural members. The book clearly and logically presents the subject's basic principles, keeping the mathematical content to its essential minimum.The sixth edition has been revised to take into account changes in standards, and clarifies the content with updated design examples and a new setting of the text. The original simplicity of the mathematical treatment has been maintained, while more emphasis has been placed on the relevance of structural mechanics to the process of structural design, analysis, materials, and loads on buildings and structures according to the current British Standards and European codes of practice.The initial chapters of the book deal with the concept of loads and theireffects on structural materials and elements in terms of stress and strain. The significance of the shape of the cross-sectionof structural elements is then considered. The book finishes with the design of simple structural elements such as beams, columns, rafters, portal frames, dome frames and gravity retaining walls.

H. Al Nageim is a Chartered Engineer and a Reader in Structural Engineering at Liverpool John Moores University. He is a Fellow of the British Institute of Non-Destructive Testing.

List of tables

ix

Preface

xi

Acknowledgements

xiii

Guide to the book

xiv

Symbols and abbreviations

xvii

Part 1 Behaviour of structures

Introduction

3

(15)

Structural mechanics

3

(1)

Structural design

3

(3)

Design methods and design philosophies

6

(4)

Characteristic strength and design strength of materials

10

(3)

Mathematical models

13

(1)

Forces

14

(3)

Exercises

17

(1)

Loads on buildings and structures

18

(18)

Introduction

18

(1)

Load types

18

(6)

Characteristic load

24

(1)

Design loads and partial factors of safety

24

(1)

Load combinations

24

(10)

Exercises

34

(2)

Concurrent coplanar forces

36

(15)

Triangle of forces

36

(2)

Parallelogram of forces

38

(2)

Rectangular components

40

(3)

Polygon of forces

43

(3)

Exercises

46

(5)

Non-concurrent coplanar forces

51

(18)

The link polygon

53

(3)

Application of the link polygon

56

(6)

Exercises

62

(7)

Moments of forces

69

(21)

Measurement of moments

70

(5)

Conditions of equilibrium

75

(2)

Resultant of parallel forces

77

(2)

Couples

79

(1)

Beam reactions

80

(5)

Exercises

85

(5)

Framed structures

90

(27)

Perfect, imperfect and redundant pin-jointed frames

90

(3)

Graphical solutions for frames -- force diagrams

93

(9)

Calculation methods for frames

102

(11)

Exercises

113

(4)

Construction materials

117

(27)

General

117

(1)

Suitability for use

118

(2)

Steel, concrete and timber as construction materials

120

(8)

Stress

128

(4)

Strain

132

(1)

Elasticity

133

(3)

Behaviour of steel in tension -- yield point

136

(2)

Strength of materials and factor of safety

138

(1)

Stresses in composite members -- modular ratio

139

(2)

Exercises

141

(3)

Shear force and bending moment

144

(26)

Shear force

144

(3)

Bending moment

147

(2)

Shear force and bending moment diagrams

149

(16)

Exercises

165

(5)

Properties of sections

170

(27)

The centre of gravity or centroid

170

(6)

Moment of inertia

176

(13)

Exercise

189

(8)

Part 2 Understanding structural design

Introduction to structural stability, durability and environmental conditions

197

(5)

General

197

(1)

Structures and environmental conditions

197

(1)

Assessment of structural safety and risk at the design stage

197

(1)

Design for durability and sustainability

198

(1)

Corrosion of steel bars in reinforced concrete elements and members

199

(1)

Why corrosion takes place and what it means in terms of chemical reactions

199

(2)

Exercises

201

(1)

Simple beam design

202

(29)

The general theory of bending

202

(5)

Elastic section modulus -- symmetrical sections

207

(6)

Elastic section modulus -- non-symmetrical sections

213

(6)

Limit state design

219

(3)

Exercises

222

(9)

Beams of two materials

231

(19)

Flitch beams

231

(4)

Reinforced concrete beams

235

(1)

Basis of design -- elastic theory method

236

(7)

Basis of design -- load factor method

243

(2)

Basis of design -- limit state design

245

(3)

Exercises

248

(2)

Deflection of beams

250

(12)

Factors affecting deflection

250

(2)

Derivation of deflection formulae

252

(6)

Span/depth ratios

258

(1)

Deflection of reinforced concrete beams

259

(1)

Exercises

260

(2)

Axially loaded columns

262

(18)

Design factors

263

(10)

Reinforced concrete columns

273

(6)

Exercises

279

(1)

Connections

280

(15)

Riveting and bolting

280

(9)

High strength friction grip bolts

289

(1)

Welding

290

(2)

Exercises

292

(3)

Addition of direct and bending stresses

295

(11)

Exercises

303

(3)

Portal frames and arches

306

(17)

Portal frames

306

(2)

Arches

308

(2)

Portal frame analysis

310

(10)

Analysis of ribbed dome structure

320

(1)

Exercises

321

(2)

Gravity retaining walls

323

(19)

Horizontal forces -- wind pressure

323

(1)

Horizontal forces -- liquid pressure

324

(1)

Horizontal forces -- soil pressure

325

(2)

Modes of failure -- sliding

327

(2)

Modes of failure -- overturning

329

(1)

Modes of failure -- overstressing

330

(9)

Exercises

339

(3)

Computer software

342

(1)

Answers to exercises

343

(14)

Bibliography

357

(1)

Index

358

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Structural Mechanics

9780582431652

0582431654

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