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.
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
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.
