Contents
Foreword vii
Acknowledgments x
About the Author xi
CHAPTER 1 Structural Modeling Techniques and Guidelines 1
Geometry Modeling 4
Load Path Considerations 7
Diaphragm Modeling 13
Rigid Diaphragm 13
Flexible Diaphragm 15
"Real" Diaphragm 15
Torsion 22
Member Releases and Supports 25
CHAPTER2 Gravity Loads and Application 29
Load Items 29
Selfweight 29
Nodal Load 30
Member Load 31
Uniform Force 31
Varying Load 32
Area Load/Floor Load 34
Example-One-Way Distribution 35
Live load Reduction 38
Example-Live Load Reduction 39
Snow loads 41
Example-Mono-Slope Roof 42
Example-Gable Roof 45
CHAPTER 3 Wind Loads and Application 50
Gust Effect Factor 50
Example-Frequency Determination for Building 50
Open Structures 53
Example-Tower Wind Load Generation 53
Enclosed Structures 59
Example-Building Wind Load Generation 61
CHAPTER 4 Seismic Loads and Application 66
Equivalent lateral Force Procedure 66
Example-Base Shear ELFP 68
Reference loads 75
Torsion and Accidental Torsion 79
Modal Response Spectrum Analysis 83
Example-Base Shear Modal Response Spectrum Alanysis 83
Linear Seismic Response History Analysis 87
Example-Base Shear Time History 87
CHAPTER 5 Loads and Load Combinations 93
Organization of load Cases 93
Example-Load Cases and Combinations 94
Load Combinations and Repeat loads 95
Reference loads 98
Seismic load Combinations and the Overstrength Factor 100
Load Combination Generator 103
Example-Load Combination Generator 105
CHAPTER 6 Stability Analysis and Design 110
AISC Specification 110
Example-Calculation of Notional Loads 113
Example-Calculation of Notional Loads Using STAAD.Pro 114
First-Order Analysis Method 118
Example-First-Order Analysis Method 118
Equivalent Length Method 120
Direct Analysis Method 121
Example-Direct Analysis Method 122
Providing Member Stability 126
Example-Column Stability Evaluation 128
CHAPTER 7 Steel Member Design 130
Tension Members 130
Example-Single Angle in Tension 131
Verify Results Using STAAD.Pro 132
Compression Members 133
Example-W14 Column Evaluation 134
Verify Results Using STAAD.Pro 135
Example-W30 Column Torsional Buckling Evaluation 136
Verify Results Using STAAD.Pro 137
Flexural Members 138
Example-W21 Beam Flexure Evaluation 139
Verify Results Using STAAD.Pro 140
Shear Members 141
Example-W18 Beam Shear Evaluation 141
Verify Results Using STAAD.Pro 142
Members Designed for Combined Forces and Torsion 143
Example-W12 Collector Beam Evaluation 143
Steel Connections 145
Example-Extended End Plate 147
Example-Beam-Column and Base Plate 151
CHAPTER 8 Steel Structures 156
Design Criteria 157
Geometry Modeling 159
Load Cases 172
Load Combination 173
Steel Design 174
AISC 360-05 Parameters 176
Analysis Results 178
CHAPTER 9 Foundation Design 182
Isolated Spread Footings 182
Example-Spread Footing Design 183
Combined Footings 188
Pile Caps 190
Mat Foundation 192
Example-Mat Foundation Design 199
CHAPTER 10 Concrete Member Design 209
Design of Concrete Members for Bending 210
Example-Beam Design 211
Design of Concrete Members for Compression 216
Example-Column Design 217
Designing Concrete Slabs 221
Example-Slab Design 222
Design of Concrete Shear Walls 225
Example-Shear Wall Design 226
Checking Composite Slabs for Floor Vibration 231
Example-Floor Vibration Analysis 231
CHAPTER 11 Concrete Structures 235
ACI Specification 235
Structure Foundation Integration 236
Concrete Moment Frame 237
Design Criteria 238
Load Cases 239
Load Combinations 239
Concrete Design Parameters 240
POELTA Analysis Formats 244
Member Design 246
Beam Design Brief 248
Column Design Brief 250
Slab Design Brief 252
Index 263