joints in steel construction - moment connections

FOREWORD......Page 4
PICTORIAL INDEX......Page 5
CONTENTS......Page 6
1.2 Classification of Connections......Page 7
1.3 Exchange of Information......Page 8
1.4 Costs......Page 9
Figure 1.2 Classification of moment connections......Page 10
1.5 Definitions......Page 11
1.6 Major Symbols......Page 12
Figure 2.1 Typical end plate connections......Page 13
Figure 2.3 Distribution of bolt forces......Page 14
Figure 2.4 Component design checks......Page 15
Figure 2.6 Column flange or end plate bending & bolt strength......Page 16
Figure 2.7 Steps in calculating the distribution of bolt forces......Page 17
Figure 2.8 Column web panel shear......Page 18
Figure 2.9 Methods of strengthening......Page 19
Table 2.3 Standard components......Page 20
2.7 Using the Capacity Tables......Page 21
Figure 2.12 Check zones for an extended end plate connection......Page 22
Step 1 - Potential Resistances of Bolt Rows in the Tension Zone......Page 23
Step 1A - End Plate or Column Flange Bending or Bolt Yielding......Page 24
Step 1B - Web Tension in Beam or Column......Page 30
Step 1C - Modification of Bolt Row Force Distribution......Page 31
Step 2A - Compression Check - Column......Page 33
Step 2B - Compression Check - Beam......Page 34
Step 3 - Design for Column Panel Shear......Page 35
Step 4 - Calculation of Moment Capacity......Page 36
Step 5 - Design for Vertical Shear Forces......Page 37
Step 6A - Design of Column Compression Stiffeners......Page 38
Step 6B - Design Using Column Flange Backing Plates......Page 40
Step 6C - Design of Tension Stiffeners......Page 41
Step 6D - Design of Supplementary Web Plates......Page 43
Step 6E - Design of Diagonal Shear Stiffeners......Page 44
Step 7 - Design of Welds......Page 45
Step 8 - Design of a Haunched Connection......Page 47
Figure 2.41 Typical flow diagram for abridged manual design......Page 48
Figure 2.42 Simplified distribution of bolt row forces......Page 49
Preliminary Sizing......Page 50
Tension Zone......Page 51
End Plate Design......Page 52
Compression Zone......Page 53
Vertical Shear in Bolts......Page 54
Summary......Page 55
3.2 Design Method......Page 56
3.4 Standard Details......Page 57
Table 3.1 Wind-moment connections......Page 58
Table 3.2 Standard wind-moment connections......Page 59
Table 3.3 Comparative performance of the standard wind-moment connections......Page 60
Figure 4.2 Site welded beam to column connections......Page 61
Figure 4.3 Shop welded beam stud connection......Page 62
4.3 Site Welded Connections......Page 63
Figure 4.5 Site connection - fully welded......Page 64
Figure 4.6 Site connection - flanges welded, web bolted......Page 65
Figure 4.7 Components of the connection requiring design checks......Page 66
Figure 4.9 Check zones......Page 67
Step 2A - Beam Flange Capacity Check......Page 68
Step 2C - Resistance of Column Web in Tension......Page 69
Step 3 - Compression Check - Column......Page 70
Step 4 - Resistance of the Column Web Panel in Shear......Page 71
Step 5 - Design of Welds......Page 72
Step 6 - Design of Fin Plate Connections......Page 73
Beam Flange Tension Capacity......Page 74
Column Web in Compression......Page 75
Compression Stiffeners......Page 76
Tension Stiffeners......Page 77
Figure 5.1 Typical bolted cover plate splices......Page 79
Figure 5.3 Design sequence......Page 80
Step 2 - Flange Capacity Check and Design of Flange Plates......Page 81
Step 3 - Design of Flange Bolts......Page 82
Step 4 - Design of Web Plates and Bolts......Page 83
Step 5 - Design for Moment from Strut Action......Page 84
Flange Capacity and Design of Flange Cover Plates......Page 85
Web Plates and Bolts......Page 86
Figure 5.9 Typical bolted moment end plate splices......Page 88
Figure 5.10 Typical beam through beam splices......Page 89
Figure 5.11 Typical welded splices......Page 90
Figure 5.12 Full strength site welds with backing strips......Page 91
Figure 6.1 Typical column base connections......Page 92
Figure 6.2 Distribution of forces and equations of equilibrium......Page 93
Table 6.3 Preferred sizes of holding down bolts & anchor plates......Page 94
Table 6.4 First trial plate dimensions......Page 95
Table 6.6 Suitable base plate thickness for stiffened column bases......Page 96
Figure 6.3 Flow diagram for base design......Page 97
Step 1 - Calculation of Bolt Tension and Concrete Compression......Page 98
Step 2 - Design Base Plate Thickness......Page 99
Step 3 - Holding Down Bolts and Anchorage......Page 101
Step 4 - Shear Transfer to Concrete......Page 103
Step 5 - Welds - Base Plate to Column Shaft......Page 104
Preliminary Sizing......Page 105
Base Plate Thickness......Page 106
Holding Down Bolts and Anchorage......Page 107
Welds - Base Plate to Column......Page 108
APPENDICES......Page 111
Appendix 1 Worked Example - Bolted End Plate......Page 112
Potential Resistance of Bolts in Tension Zone......Page 114
Resistance of the Column Web Panel in Shear......Page 122
Calculation of Moment Capacity......Page 123
Weld Design......Page 124
Design of Compression Stiffeners......Page 126
Design of Column Flange Backing Plates......Page 129
Calculate Bolt Row Resistances......Page 130
Design of Tension Rib Stiffeners......Page 135
Design of Column Supplementary Web Plates......Page 137
Design of Morris Stiffener......Page 139
Exceptions to Published Standards......Page 141
5 - EC3 - Web Tension......Page 142
12 - BS 5950 - Compression Stiffeners the '80%' Rule......Page 143
15 - EC3 - Flange to End Plate Weld......Page 144
Appendix 3......Page 145
Appendix 4......Page 146
CAPACITY TABLES......Page 147
Beam Tables......Page 148
Worked Examples......Page 150
Example 1 - Partial Strength Connections......Page 151
Example 2 - Full Strength Connections......Page 153
Example 3 - Connection with Axial Tension......Page 154
Example 4 - Connection with Axial Compression......Page 155
767x267UB: Grade 43: M24 8.8 bolts......Page 156
686x254UB: Grade 43: M24 8.8 bolts......Page 157
610x305UB: Grade 43: M24 8.8 bolts......Page 158
610x229UB: Grade 43: M24 8.8 bolts......Page 159
533x210UB: Grade 43: M24 8.8 bolts......Page 160
457x191UB: Grade 43: M20 8.8 bolts......Page 161
457x152UB: Grade 43: M20 8.8 bolts......Page 162
406x178UB: Grade 43: M20 8.8 bolts......Page 163
406x140UB: Grade 43: M20 8.8 bolts......Page 164
356x171UB: Grade 43: M20 8.8 bolts......Page 165
356x127UB: Grade 43: M20 8.8 bolts......Page 166
305x165UB: Grade 43: M20 8.8 bolts......Page 167
305x127UB: Grade 43: M20 8.8 bolts......Page 168
305x102UB: Grade 43: M20 8.8 bolts......Page 169
254x146UB: Grade 43: M20 8.8 bolts......Page 170
254x102UB: Grade 43: M20 8.8 bolts......Page 171
767x267UB: Grade 50: M24 8.8 bolts......Page 172
686x254UB: Grade 50: M24 8.8 bolts......Page 173
610x305UB: Grade 50: M24 8.8 bolts......Page 174
610x229UB: Grade 50: M24 8.8 bolts......Page 175
533x210UB: Grade 50: M24 8.8 bolts......Page 176
457x191UB: Grade 50: M20 8.8 bolts......Page 177
457x152UB: Grade 50: M20 8.8 bolts......Page 178
406x178UB: Grade 50: M20 8.8 bolts......Page 179
406x140UB: Grade 50: M20 8.8 bolts......Page 180
356x171UB: Grade 50: M20 8.8 bolts......Page 181
356x127UB: Grade 50: M20 8.8 bolts......Page 182
305x165UB: Grade 50: M20 8.8 bolts......Page 183
305x127UB: Grade 50: M20 8.8 bolts......Page 184
305x102UB: Grade 50: M20 8.8 bolts......Page 185
254x146UB: Grade 50: M20 8.8 bolts......Page 186
254x102UB: Grade 50: M20 8.8 bolts......Page 187
Unstiffened Columns: Grades 43 & 50: 3 Pairs M24 8.8 bolts......Page 188
Rib stiffened columns: Grades 43 & 50: 4 Pairs M24 8.8bolts......Page 189
Web stiffened columns: Grades 43 & 50: 3 Pairs M24 8.8 bolts......Page 190
Unstiffened columns: Grades 43 & 50: 3 Pairs M 20 8.8 bolts......Page 191
Rib stiffened columns: Grades 43 & 50: 4 Pairs M20 8.8 bolts......Page 192
Web stiffened columns: Grades 43 & 50: 3 Pairs M20 8.8 bolts......Page 193
Notes on Use......Page 194
Worked Example using the Capacity Table......Page 195
533x210UB Rafters: Grade 43......Page 196
457x191UB Rafters: Grade 43......Page 198
457x152UB Rafters: Grade 43......Page 200
406x140UB Rafters: Grade 43......Page 202
356x127UB Rafters: Grade 43......Page 204
Portal Frame Apex Haunch Connections......Page 205
Notes on Use......Page 208
Connection to inner column......Page 209
Connection to outer column......Page 210
1 Row M20 8.8 bolts......Page 211
2 Rows M20 8.8 bolts......Page 212
2 Rows M20 8.8 bolts......Page 214
3 Rows M20 8.8 bolts......Page 216
1 Row M24 8.8 bolts......Page 218
2 Rows M24 8.8 bolts......Page 219
2 Rows M24 8.8 bolts......Page 221
3 Rows M24 8.8 bolts......Page 223
Dimensions for Detailing......Page 225
Steel Strengths, Bolt and Electrode Strengths......Page 226
Ordinary Bolts - Capacities......Page 227
'HSFG' Bolts - Capacities......Page 228
Countersunk Bolts - Capacities......Page 229
Welds - Capacities......Page 230
Ordinary Bolt Assemblies......Page 231
High Strength Friction Grip Assemblies......Page 232
Bolt Access Dimensions......Page 233
Holding Down Bolts......Page 234
Universal Beams......Page 235
Universal Columns......Page 238
Joists......Page 239