AISC Design Guide 13..

TABLE OF CONTENTS
1. Introduction ......................... 1 5.2 Column Stiffening for Weak-Axis Moment
1.1 Scope............................ 1
Connections ...................... 33
1.2 Column Stiffening ................... 2 5.3 Column Stiffening for Concurrent Strong- and
1.3 References Specifications .............. 2
Weak-Axis Moment Connections ....... 34
1.4 Definitions of Wind, Low-Seismic, and
5.4 Web Doubler Plates as Reinforcement for
High-Seismic Applications. ............ 2
Local Web Yielding, Web Crippling, and/ or
1.5 Acknowledgements. .................. 2
Compression Buckling of the Web. ...... 35
5.5 Web Doubler Plates at Locations of Weak-Axis
2. Strong-Axis Moment Connections
to Unreinforced Columns ...............
2.1 Force Transfer in Unreinforced Columns ....
3
3
Connections ......................
5.6 Diagonal Stiffeners ..................
35
36
2.2 Determining the Design Strength of an
6. Design Examples ..................... 39
Unreinforced Column ................ 5 Example 6-1. ......................... 39
2.3 Column Cross-Sectional Stiffness
Example 6-2. ......................... 40
Considerations .................... 11 Example 6-3. ......................... 41
2.4 Design Aids. ...................... 11 Example 6-4. ......................... 45
Example 6-5. ......................... 47
3. Economical Selection of Columns .........
3.1 Achieving Balance Between Increases
13 Example 6-6. .........................
Example 6-7. .........................
47
50
in Material Cost and Reductions in Example 6-8. ......................... 52
LaborCost....................... 13 Example 6-9. ......................... 52
3.2 Eliminating Column Stiffening. ......... 14 Example 6-10. ........................ 54
3.3 Minimizing the Economic Impact of Column Example 6-11. ........................ 55
Stiffening Requirements in Wind and Low- Example 6-12. ........................ 58
Seismic Applications. ............... 15 Example 6-13. ........................ 59
3.4 Minimizing the Economic Impact of Column Example 6-14. ........................ 61
Stiffening Requirements in High-Seismic
Applications. ..................... 16 APPENDIX A ......................... 67
4. Strong-Axis Moment Connections APPENDIX B.......................... 75
to Stiffened Columns ................. 17
4.1 Determining the Column Stiffening APPENDIX C ......................... 83
Requirements ..................... 18
4.2 Force Transfer in Stiffened Columns ...... 20 APPENDIX D ......................... 95
4.3 Design of Transverse Stiffeners ......... 22 Special Considerations. .................. 95
4.4 Design of Web Doubler Plates .......... 27 Moment Connections to Column Webs. ....... 99
5. Special Considerations ................. 33
5.1 Column Stiffening for Beams of Differing
Depth and/ or Top of Steel. ............ 33
© 2003 by American Institute of Steel Construction, Inc. All rights reserved.
This publication or any part thereof must not be reproduced in any form without permission of the publisher.