ANSI/AISC 358s1-18 An American National Standard ...

1 ANSI/AISC 358-16. ANSI/AISC 358s1-18 . An American National Standard Prequalified Connections for Special and Intermediate Steel Moment Frames for seismic Applications, including supplement No. 1. May 12, 2016. (includes 2018 supplement ). Approved by the Connection Prequalification Review Panel ANSI/AISC 358-16. ANSI/AISC 358s1-18 . An American National Standard Prequalified Connections for Special and Intermediate Steel Moment Frames for seismic Applications, including supplement No. 1. May 12, 2016. (includes 2018 supplment). Approved by the Connection Prequalification Review Panel AISC 2018. by American Institute of Steel Construction All rights reserved. This book or any part thereof must not be reproduced in any form without the written permission of the publisher. The AISC logo is a registered trademark of AISC. The information presented in this publication has been prepared by a balanced committee following American National Standards Institute (ANSI) consensus procedures and recognized principles of design and construction.

2 While it is believed to be accurate, this information should not be used or relied upon for any specific application without compe- tent professional examination and verification of its accuracy, suitability and applicability by a licensed engineer or architect. The publication of this information is not a representation or warranty on the part of the American Institute of Steel Construction, its officers, agents, employees or committee members, or of any other person named herein, that this informa- tion is suitable for any general or particular use, or of freedom from infringement of any patent or patents. All representations or warranties, express or implied, other than as stated above, are specifically disclaimed. Anyone making use of the information presented in this publication assumes all liability arising from such use. Caution must be exercised when relying upon standards and guidelines developed by other bodies and incorporated by reference herein since such material may be modified or amended from time to time subsequent to the printing of this edition.

3 The American Institute of Steel Construction bears no responsibility for such material other than to refer to it and incorporate it by reference at the time of the initial publication of this edition. Printed in the United States of America Prequalified Connections for Special and Intermediate Steel Moment Frames for seismic Applications, 2016, incl. supplement No. 1. American Institute of Steel Construction PREFACE. (This Preface is not part of AISC 358-16s1, supplement 1 to Prequalified Connections for Special and Intermediate Steel Moment Frames for seismic Applications, but is included for informational purposes only.). This supplement was developed by the AISC Connection Prequalification Review Panel (CPRP) using a consensus process. This document is the first supplement to ANSI/AISC . 358-16, Prequalified Connections for Special and Intermediate Steel Moment Frames for seismic Applications.

4 This supplement adds a new prequalified moment connection, the proprietary SlottedWeb Moment Connection, in a new Chapter 14. Chapter 11 covering the SidePlate Moment Connection has been expanded to include HSS columns and to permit bolted connections. Additionally, Chapter 10 covering the ConXtech CONXL Moment Connection has been revised to address a manufacturing safety issue. A nonmandatory Commentary has been prepared to provide background for the provi- sions of the Standard , and the user is encouraged to consult it. Additionally, nonmandatory User Notes are interspersed throughout the Standard to provide concise and practical guid- ance in the application of the provisions. The reader is cautioned that professional judgment must be exercised when data or rec- ommendations in this Standard are applied, as described more fully in the disclaimer notice preceding the Preface.

5 This Standard was approved by the CPRP: Michael D. Engelhardt, Chairman Kevin Moore Scott F. Armbrust, Vice-Chairman Thomas M. Murray John Abruzzo Charles W. Roeder Cam Baker Thomas A. Sabol Joel A. Chandler Robert E. Shaw Jr. Michael L. Cochran James A. Swanson Theodore L. Droessler Kurt Swensson Gary Glenn Chia-Ming Uang Ronald O. Hamburger Jamie Winans Gregory H. Lynch Benham Yousefi Brett R. Manning Margaret A. Matthew, Secretary The CPRP gratefully acknowledges the following individuals for their contributions to this document: Henry Gallart Behzad Rafezy Raymond Kitasoe Ralph Richards Prequalified Connections for Special and Intermediate Steel Moment Frames for seismic Applications, 2016, incl. supplement No. 1. American Institute of Steel Construction Prequalified Connections for Special and Intermediate Steel Moment Frames for seismic Applications, 2016, incl.

6 supplement No. 1. American Institute of Steel Construction TABLE OF CONTENTS. SYMBOLS.. xx GLOSSARY.. xxv Standard . CHAPTER 1. GENERAL.. 1. Scope .. 1. References .. 1. General.. 3. CHAPTER 2. DESIGN REQUIREMENTS.. 4. Special and Intermediate Moment Frame Connection Types .. 4. Connection Stiffness .. 4. Members.. 4. 1. Rolled Wide-Flange Members.. 4. 2. Built-up Members.. 4. 2a. Built-up Beams.. 4. 2b. Built-up Columns .. 5. 3. Hollow Structural Sections (HSS).. 7. Connection Design Parameters .. 7. 1. Resistance Factors.. 7. 2. Plastic Hinge Location .. 7. 3. Probable Maximum Moment at Plastic Hinge .. 7. 4. Continuity Plates.. 8. Panel Zones .. 8. Protected Zone.. 8. CHAPTER 3. WELDING REQUIREMENTS.. 10. Filler Metals.. 10. Welding Procedures.. 10. Backing at Beam-to-Column and Continuity Plate-to-Column Joints.. 10. 1. Steel Backing at Continuity Plates.

7 10. 2. Steel Backing at Beam Bottom Flange.. 10. 3. Steel Backing at Beam Top Flange.. 10. 4. Prohibited Welds at Steel Backing .. 11. 5. Nonfusible Backing at Beam Flange-to-Column Joints.. 11. Weld Tabs.. 11. Tack Welds.. 11. Continuity Plates .. 12. Quality Control and Quality Assurance.. 12. Prequalified Connections for Special and Intermediate Steel Moment Frames for seismic Applications, 2016, incl. supplement No. 1. American Institute of Steel Construction TABLE OF CONTENTS. CHAPTER 4. BOLTING REQUIREMENTS.. 13. Fastener Assemblies.. 13. Installation Requirements.. 13. Quality Control and Quality Assurance.. 13. CHAPTER 5. REDUCED BEAM SECTION (RBS) MOMENT CONNECTION.. 14. General.. 14. Systems .. 14. Prequalification Limits.. 14. 1. Beam Limitations .. 14. 2. Column Limitations.. 15. Column-Beam Relationship Limitations.. 16. Beam Flange-to-Column Flange Weld Limitations.

8 16. Beam Web-to-Column Flange Connection Limitations.. 16. Fabrication of Flange Cuts.. 17. Design Procedure.. 18. CHAPTER 6. BOLTED UNSTIFFENED AND STIFFENED EXTENDED. END-PLATE MOMENT CONNECTIONS.. 21. General.. 21. Systems .. 21. Prequalification Limits.. 22. 1. Beam Limitations .. 21. 2. Column Limitations.. 21. Column-Beam Relationship Limitations.. 24. Continuity Plates .. 24. Bolts.. 24. Connection Detailing.. 24. 1. Gage.. 24. 2. Pitch and Row Spacing.. 24. 3. End-Plate Width .. 26. 4. End-Plate Stiffener .. 26. 5. Finger Shims.. 26. 6. Welding Details.. 26. Design Procedure.. 29. 1. End-Plate and Bolt Design .. 29. 2. Column-Side Design.. 34. CHAPTER 7. BOLTED FLANGE PLATE (BFP) MOMENT CONNECTION.. 39. General.. 39. Systems .. 39. Prequalification Limits.. 40. 1. Beam Limitations .. 40. 2. Column Limitations.. 40. Prequalified Connections for Special and Intermediate Steel Moment Frames for seismic Applications, 2016, incl.

9 supplement No. 1. American Institute of Steel Construction TABLE OF CONTENTS Column-Beam Relationship Limitations.. 41. Connection Detailing.. 41. 1. Plate Material Specifications.. 41. 2. Beam Flange Plate Welds .. 41. 3. Single-Plate Shear Connection Welds.. 41. 4. Bolt Requirements.. 41. 5. Flange Plate Shims .. 42. Design Procedure.. 42. CHAPTER 8. WELDED UNREINFORCED FLANGE-WELDED WEB (WUF-W). MOMENT CONNECTION.. 46. General.. 46. Systems .. 46. Prequalification Limits.. 46. 1. Beam Limitations .. 46. 2. Column Limitations.. 47. Column-Beam Relationship Limitations.. 48. Beam Flange-to-Column Flange Welds.. 48. Beam Web-to-Column Connection Limitations.. 48. Design Procedure.. 49. CHAPTER 9. KAISER BOLTED BRACKET (KBB). MOMENT CONNECTION.. 52. General.. 52. Systems .. 53. Prequalification Limits.. 53. 1. Beam Limitations .. 53. 2. Column Limitations.

10 54. 3. Bracket Limitations.. 55. Column-Beam Relationship Limitations.. 55. Bracket-to-Column Flange Limitations.. 55. Bracket-to-Beam Flange Connection Limitations.. 56. Beam Web-to-Column Connection Limitations.. 56. Connection Detailing.. 57. Design Procedure.. 57. CHAPTER 10. CONXTECH CONXL MOMENT CONNECTION .. 64. General.. 64. Systems .. 67. Prequalification Limits.. 68. 1. Beam Limitations .. 68. 2. Column Limitations.. 68. 3. Collar Limitations.. 69. Prequalified Connections for Special and Intermediate Steel Moment Frames for seismic Applications, 2016, incl. supplement No. 1. American Institute of Steel Construction TABLE OF CONTENTS. Collar Connection Limitations.. 70. Beam Web-to-Collar Connection Limitations.. 71. Beam Flange-to-Collar Flange Welding Limitations.. 72. Column-Beam Relationship Limitations.. 73. Design Procedure.. 73.