Simplified Design of Wood Structures / Edition 6

by James Ambrose, Patrick Tripeny

Overview

SIMPLIFIED DESIGN of WOOD STRUCTURES

Architecture

Newly updated—the most accessible, thorough introduction to the basics of wood structure design

No architect’s education would be complete without a basic understanding of how structures respond to the action of forces and how these forces affect the performance of various building material (wood, steel, concrete, etc.). In continuous publication for over sixty years, this standard guide to structural design with wood has now been updated to include current design practices, standards, and consideration of new wood products.

Written to be easily understood by readers with limited experience in engineering mechanics, structural analysis, or advanced mathematics, the book now features:

• Consideration of the LRFD method of structural design in addition to the ASD method
• Updated coverage conforming to current building codes, design practices, and industry standards
• Expanded treatment of wood products beyond sawn lumber
• More examples and a wider sweep of systems and products

Equally suited to classroom use or independent study, Simplified Design of Wood Structures, Sixth Edition stands as a valuable resource that no architect or builder should be without.

The Parker/Ambrose Series of Simplified Design Guides has been providing simple, concise solutions to common structural and environmental design problems for more than seven decades.

Product Details

ISBN-13:	9780470187845
Publisher:	Wiley
Publication date:	03/03/2009
Series:	Parker/Ambrose Series of Simplified Design Guides , #38
Edition description:	6th Updated ed.
Pages:	416
Product dimensions:	5.60(w) x 8.50(h) x 1.10(d)

About the Author

JAMES AMBROSE is Editor of the Parker/Ambrose Series of Simplified Design Guides. He has practiced as an architect in California and Illinois, and as a structural engineer in Illinois. He was professor of architecture at the University of Southern California.

PATRICK TRIPENY is an Associate Professor and the Director of the School of Architecture at the University of Utah. He is a licensed architect in California, where he practiced architecture before returning to academia. He has been the recipient of a number of teaching awards at the local and national level for his work in teaching structures and design.

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Table of Contents

Preface to the Sixth Edition xi

Preface to the First Edition xv

Introduction 1

1 Structural Uses of Wood 12

1.1 Sources of Wood 13

1.2 Tree Growth 13

1.3 Density of Wood 14

1.4 Defects in Lumber 15

1.5 Seasoning of Wood 16

1.6 Nominal and Dressed Sizes 17

1.7 Use Classification of Structural Lumber 17

1.8 Grading of Structural Lumber 18

1.9 Fabricated Wood Products 18

2 Design Issues and Methods 20

2.1 Design Goals 20

2.2 Methods of Investigation and Design 23

2.3 Choice of Design Method 25

3 Structural Investigation 27

3.1 General Concerns 27

3.2 Forces and Loads 28

3.3 Direct Stress 30

3.4 Kinds of Stress 31

3.5 Deformation 32

3.6 Elastic Response and Limit 32

3.7 Inelastic Behavior and Ultimate Strength 33

3.8 Modulus of Elasticity 33

3.9 Permissible Values for Design 35

4 Design Data and Criteria 36

4.1 General Concerns 36

4.2 Reference Design Values for Allowable Stress Design (ASD) 37

4.3 Adjustment of Design Values 41

4.4 Modification for Loading with Relation to Grain Direction 45

4.5 Design Controls for LRFD 47

5 Beam Functions 50

5.1 General Considerations 50

5.2 Moments 52

5.3 Beam Loads and Reaction Forces 57

5.4 Beam Shear 60

5.5 Bending Moment 65

5.6 Tabulated Values for Beam Behavior 78

5.7 Multiple-Span Beams 82

6 Behavior of Beams 86

6.1 Shear in Beams 86

6.2 Bending in Beams 93

6.3 Deflection 97

6.4 Bearing 101

6.5 Buckling of Beams 103

6.6 Unsymmetrical Bending 105

6.7 Behavior Considerations for LRFD 109

7 Design of Beams 117

7.1 Design Procedure 117

7.2 Beam Design Examples 118

7.3 Joists and Rafters 121

7.4 Alternative Spanning Elements 126

8 Wood Decks 129

8.1 Board Decks 129

8.2 Wood Fiber Decks 132

8.3 Plywood Decks 132

8.4 Spanning Capability of Decks 133

9 Wood Columns 135

9.1 Slenderness Ratio for Columns 135

9.2 Compression Capacity of Simple Solid Columns 136

9.3 Column Load Capacity, LRFD 145

9.4 Round Columns 147

9.5 Stud Wall Construction 148

9.6 Spaced Columns 150

9.7 Built-Up Columns 154

9.8 Columns with Bending 155

10 Connections for Wood Structures 166

10.1 Bolted Joints 166

10.2 Nailed Joints 176

10.3 Screws 179

10.4 Mechanically Driven Fasteners 181

10.5 Shear Developers 181

10.6 Split-Ring Connectors 182

10.7 Formed Steel Framing Elements 189

10.8 Concrete and Masonry Anchors 192

10.9 Plywood Gussets 192

10.10 Investigation of Connections, LRFD 194

11 Trusses 196

11.1 General Considerations 196

11.2 Types of Trusses 199

11.3 Bracing for Trusses 199

11.4 Loads on Trusses 201

11.5 Investigation for Internal Forces in Planar Trusses 203

11.6 Design Forces for Truss Members 221

11.7 Combined Actions in Truss Members 221

11.8 Truss Members and Joints 222

11.9 Timber Trusses 223

11.10 Manufactured Trusses 224

12 Miscellaneous Wood Products and Elements 226

12.1 Engineered Wood Products 226

12.2 Glued Laminated Structural Member 227

12.3 Structural Composite Lumber 229

12.4 Wood Structural Panels 231

12.5 Plywood 232

12.6 Prefabricated Wood I-Joists 237

12.7 Built-Up Panel and Lumber Beams 238

12.8 Flitched Beams 239

12.9 Pole Structures 244

13 Wood Structures for Lateral Bracing 246

13.1 Application of Wind and Earthquake Forces 247

13.2 Horizontal Diaphragms 250

13.3 Vertical Diaphragms (Shear Walls) 262

13.4 Investigation and Design of Wood-Framed Shear Walls 270

13.5 Trussed Bracing for Wood Frames 277

13.6 Special Lateral Bracing 284

14 General Considerations for Building Structures 288

14.1 Choice of Building Construction 288

14.2 Structural Design Standards 289

14.3 Loads for Structural Design 289

14.4 Dead Loads 290

14.5 Building Code Requirements for Structures 292

14.6 Live Loads 294

14.7 Lateral Loads (Wind and Earthquake) 297

14.8 Load Combinations and Factors 301

14.9 Determination of Design Loads 302

14.10 Structural Planning 302

14.11 Building Systems Integration 303

14.12 Economics 303

15 Building Design Examples 306

15.1 Building One: Single-Story Light Wood Frame 307

15.2 Building Two: Multistory Light Wood Frame 327

15.3 Building Three: Masonry and Timber Structure 334

15.4 Building Four: Steel and Wood Structure 351

Appendix A: Properties of Sections 354

Appendix B: Study Aids 369

Appendix C: Answers to Problems 381

Glossary 387

References 390

Index 393