Aitc Timber Construction Manua

ISBN-13: 9780470545096 / Angielski / Twarda / 2012 / 672 str.

Aitc;American Institute of Timber Construction (Aitc); Jeff D. Linville

Opis

THE DEFINITIVE DESIGN AND CONSTRUCTION INDUSTRY SOURCE FOR BUILDING WITH WOOD- NOW IN A THOROUGHLY UPDATED SIXTH EDITION Since its first publication in 1966, Timber Construction Manual has become the essential design and construction industry resource for building with structural glued laminated timber. Timber Construction Manual, Sixth Edition provides architects, engineers, contractors, educators, and related professionals with up-to-date information on engineered timber construction, including the latest codes, construction methods, and authoritative design recommendations. Content has been reorganized to flow easily from information on wood properties and applications to specific design considerations. Based on the most reliable technical data available, this edition has been thoroughly revised to encompass:

• A thorough update of all recommended design criteria for timber structural members, systems, and connections
• An expanded collection of real-world design examples supported with detailed schematic drawings
• New material on the role of glulam in sustainable building practices
• The latest design and construction codes, including the 2012 National Design Specification for Wood Construction, AITC 117-2010, and examples featuring ASCE 7-10 and IBC 2009
• More cross-referencing to other available AITC standards on the AITC website

Since 1952, the AMERICAN INSTITUTE OF TIMBER CONSTRUCTION has been the national technical trade association of the structural glued laminated timber industry. AITC-recommended building and design codes for wood-based structures are considered authoritative in the United States building industry.

Spis treści

PREFACE xi

1 TIMBER CONSTRUCTION 1

1.1 Introduction / 1

1.2 Materials / 1

1.3 Structural Systems / 13

1.4 Economy / 27

1.5 Permanence / 32

1.6 Seasoning / 37

1.7 Handling, Storage, and Erection / 38

1.8 Conclusion / 40

2 WOOD PROPERTIES 42

2.1 Introduction / 42

2.2 Specific Gravity and Specific Weight of Commercial Lumber Species / 46

2.3 Dimensional Changes Due to Moisture and Temperature / 50

2.4 Thermal Insulating Properties / 53

2.5 Wood in Chemical Environments / 54

2.6 Acoustical Properties / 55

2.7 Electrical Properties / 55

2.8 Coefficient of Friction / 56

2.9 Conclusion / 56

3 TIMBER DESIGN 57

3.1 Introduction / 57

3.2 Loads / 58

3.3 Design Values / 73

3.4 Adjustment Factors / 74

3.5 Deflection / 92

3.6 Camber / 95

3.7 Ponding / 98

3.8 Conclusion / 100

4 TIMBER BEAMS 102

4.1 Introduction / 102

4.2 Structural Evaluation of Beams / 102

4.3 Simple Beams / 105

4.4 Continuous Members / 117

4.5 Biaxial Bending (Bending about Both Axes) / 122

4.6 Torsion / 130

4.7 Conclusion / 133

5 TIMBER COLUMNS AND TENSION MEMBERS 134

5.1 Introduction / 134

5.2 Column Design Criteria / 134

5.3 Rectangular Columns / 135

5.4 Round Columns / 140

5.5 Tapered Columns / 140

5.6 Spaced Columns / 141

5.7 Built–Up Columns / 144

5.8 Columns with Flanges / 146

5.9 Tension Members / 147

5.10 Conclusion / 148

6 TIMBER BEAM–COLUMNS AND TENSION BEAMS 149

6.1 Introduction / 149

6.2 General Equation for Beam–Columns / 150

6.3 Centric Axial Compression and Side Load Bending about Both Axes / 156

6.4 Centric Axial Compression and Side Load Bending about Strong Axis Only / 161

6.5 Eccentric Axial Compression Only / 165

6.6 Axial Compression Eccentricity in Strong Direction Only / 165

6.7 Columns with Side Brackets / 169

6.8 Combined Axial Tension and Bending / 170

6.9 Conclusion / 173

7 TAPERED BEAMS 174

7.1 Introduction / 174

7.2 Tapered Beam Design / 176

7.3 Beams with Tapered End Cuts / 183

7.4 Conclusion / 188

8 CURVED GLULAM BEAMS 189

8.1 Introduction / 189

8.2 Curved Beams with Constant Depth / 195

8.3 Pitched and Tapered Curved Beams / 200

8.4 Pitched and Tapered Curved Beams with Mechanically Attached Haunch / 223

8.5 Conclusion / 232

9 GLULAM ARCHES 233

9.1 Introduction / 233

9.2 Preliminary Design Procedure / 233

9.3 Conclusion / 249

10 HEAVY TIMBER DECKING 251

10.1 Introduction / 251

10.2 Installation Requirements / 251

10.3 Design Formulas / 255

10.4 Section Properties / 256

10.5 Decking Design Values / 257

10.6 Conclusion / 259

11 CONNECTIONS IN TIMBER STRUCTURES 260

11.1 Introduction / 260

11.2 Connection Detailing Principles / 260

11.3 Types of Fasteners / 264

11.4 Reference Design Values for Fasteners / 272

11.5 Adjustment Factors / 274

11.6 Conclusion / 283

12 MEMBER CAPACITY AT CONNECTIONS 284

12.1 Introduction / 284

12.2 Member Capacity at Connections Loaded Perpendicular–to–Grain / 284

12.3 Member Capacity at Connections Loaded Parallel–to–Grain / 291

12.4 Member Capacity at Connections Loaded at an Angle to Grain / 307

12.5 Conclusion / 308

13 DOWEL–TYPE FASTENERS 309

13.1 Introduction / 309

13.2 Dowel–Type Fasteners Loaded Laterally / 309

13.3 Dowel–Type Fasteners Loaded in Withdrawal / 328

13.4 Dowel–Type Fasteners Loaded Laterally and in Withdrawal / 330

13.5 Conclusion / 334

14 SHEAR PLATES AND SPLIT RINGS 335

14.1 Introduction / 335

14.2 Connectors in Side Grain / 336

14.3 Timber Connectors in End Grain / 347

14.4 Conclusion / 352

15 MOMENT SPLICES 353

15.1 Introduction / 353

15.2 Shear Transfer / 355

15.3 Moment Transfer / 355

15.4 Conclusion / 370

16 LOAD AND RESISTANCE FACTOR DESIGN 371

16.1 Introduction / 371

16.2 Design Values and Adjustment Factors / 372

16.3 Design Checks / 374

16.4 Conclusion / 381

17 TIMBER BRIDGES 382

17.1 Introduction / 382

17.2 Types of Timber Bridges / 383

17.3 Advantages of Glued Laminated Timber / 389

17.4 Preservative Treatments / 390

17.5 Wearing Surfaces / 391

17.6 Guardrails / 392

17.7 Design Methods / 393

17.8 Conclusion / 395

18 LRFD BRIDGE DESIGN 396

18.1 Introduction / 396

18.2 Longitudinal Stringers / 399

18.3 Transverse Glulam Deck Panels / 418

18.4 Longitudinal Deck (with Stiffeners) / 425

18.5 Conclusion / 432

19 ASD BRIDGE DESIGN 433

19.1 Introduction / 433

19.2 Longitudinal Stringers (Girders) / 436

19.3 Interconnected Transverse Deck Panels / 447

19.4 Non–Interconnected Transverse Deck Panels / 447

19.5 Longitudinal Deck (with Stiffeners) / 457

19.6 Static Design of Guardrail System / 463

19.7 Conclusion / 474

20 FIRE SAFETY 475

20.1 Introduction / 475

20.2 Types of Construction / 476

20.3 Lessons from Actual Fires / 476

20.4 Performance of Wood in Fire / 478

20.5 Wood versus Steel / 479

20.6 Heavy Timber Construction / 482

20.7 Fire–Resistance–Rated Construction / 483

20.8 Use of Stock Glulam Beams in Fire Rated Construction / 494

20.9 Fire Retardant Treatment / 495

20.10 Conclusion / 495

APPENDIX A DESIGN EXAMPLES 497

Introduction / 498

APPENDIX B REFERENCE INFORMATION 594

B.1 Beam Diagrams and Formulas / 595

B.2 Typical Fastener Dimensions and Yield Strengths / 617

B.3 Structural Glued Laminated Timber Reference Design Values / 623

REFERENCES 630

INDEX 641

O autorze

Since 1952, the AMERICAN INSTITUTE OF TIMBER CONSTRUCTION has been the national technical trade association of the structural glued laminated timber industry. AITC–recommended building and design codes for wood–based structures are considered authoritative in the United States building industry.