AISC Design Guide 12: Modification of Existing Steel Welded Moment Frame Connections for Seismic Resistance, 1999 Edition

AISC Design Guide 12: Modification of Existing Steel Welded Moment Frame Connections for Seismic Resistance, 1999 Edition - Table of Contents:

• Preface
• Introduction
  • Background
  • Factors Contributing to Connection Failures
  • Repair and Modification
  • Objective of Design Guide
• Achieving Improved Seismic Performance
  • Reduced Beam Section
  • Welded Haunch
  • Bolted Bracket
• Experimental Results
  • Related Research
  • Reduced Beam Section
  • Welded Haunch
  • Bolted Bracket
  • NIST/AISC Experimental Program
  • Reduced Beam Section
  • Welded Haunch
  • Bolted Bracket
• Design Basis for Connection Modification
  • Material Strength
  • Critical Plastic Section
  • Design Forces
  • Plastic Moment
  • Beam Shear
  • Column-Beam Moment Ratio
  • Connection Modification Performance
  • Objective
• Design of Reduced Beam Section Modification
  • Recommended Design Provisions
  • Minimum Recommended RBS Modifications
  • Size and Shape of RBS Cut
  • Flange Weld Modifications
  • Techniques to Further Enhance Connection Performance
  • Additional Design Considerations
  • Design Example
• Design of Welded Haunch Modification
  • Recommended Design Procedure
  • Structural Behavior and Design Considerations
  • Simplified Haunch Connection Model And Determination of Haunch Flange Force
  • Haunch Web Shear
  • Design Procedure
  • Recommended Detailing Provisions
  • Design Weld
  • Design Stiffener
  • Continuity Plates
  • Design Example
• Design of Bolted Bracket Modification
  • Minimum Recommended Bracket Design Provisions
  • Proportioning of Bolted Haunch Bracket
  • Beam Ultimate Forces
  • Haunch Bracket Forces at Beam Interface
  • Haunch Bracket Bolts
  • Haunch Bracket Stiffener Check
  • Angle Bracket Design
  • Design Example
• Considerations for Practical Implementation
  • Disruption or Relocation of Building Tenants
  • Removal and Restoration of Collateral Building Finishes
  • Health and Safety of Workers and Tenants
  • Other Issues
• References
• Symbols
• Abbreviations
• APPENDIX A
• Steel Design Guide Series