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AISC A358 20W 2020

AISC A358 20W 2020

$24.05

ANSI/AISC 358-16 with ANSI/AISC 358s1-18 and ANSI/AISC 358s2-20, Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications

Published By Publication Date Number of Pages
AISC 2020 338
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The prequalified connections standard has been developed by the AISC Connection Prequalification Review Panel in accordance with Chapter K of the Seismic Provisions for Structural Steel Buildings. The connections have been prequalified for use in special and intermediate steel moment frames without the need for additional testing. Supplement No. 1 adds slotted web moment connections to the standard. In addition, the supplement includes a field bolted option for the popular SidePlate moment connection. The supplement has been fully integrated into the standard. Supplement No. 2 expands the scope of prequalification for the Chapter 11 SidePlate moment connection and the Chapter 12 Simpson Strong-Tie Strong Frame moment connection.

PDF Catalog

PDF Pages PDF Title
1 ANSI/AISC 358-16 with ANSI/AISC 358s1-18 and ANSI/AISC 358s2-20: Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications, including Supplements No. 1 and No. 2
3 Inside front cover
4 Copyright
5 Preface
7 Table of Contents
17 Symbols
28 Glossary
31 Chapter 1 General

1.1 Scope

1.2 References
33 1.3 General
34 Chapter 2 Design Requirements

2.1 Special and Intermediate Moment Frame Connection Types

2.2 Connection Stiffness

2.3 Members

2.3.1 Rolled Wide-Flange Members

2.3.2 Built-up Members

2.3.2a Built-up Beams
35 2.3.2b Built-up Columns
37 2.3.3 Hollow Structural Sections (HSS)

2.4 Connection Design Parameters

2.4.1 Resistance Factors

2.4.2 Plastic Hinge Location
38 2.4.3 Probable Maximum Moment at Plastic Hinge

2.4.4 Continuity Plates

2.5 Panel Zones
39 2.6 Protected Zone
40 Chapter 3 Welding Requirements

3.1 Filler Metals

3.2 Welding Procedures

3.3 Backing at Beam-to-Column and Continuity Plate-to-Column Joints

3.3.1 Steel Backing at Continuity Plates

3.3.2 Steel Backing at Beam Bottom Flange

3.3.3 Steel Backing at Beam Top Flange
41 3.3.4 Prohibited Welds at Steel Backing

3.3.5 Nonfusible Backing at Beam Flange-to-Column Joints

3.4 Weld Tabs

3.5 Tack Welds
42 3.6 Continuity Plates

3.7 Quality Control and Quality Assurance
43 Chapter 4 Bolting Requirements
4.1 Fastener Assemblies

4.2 Installation Requirements

4.3 Quality Control and Quality Assurance
44 Chapter 5 Reduced Beam Section (RBS) Moment Connection

5.1 General

5.2 Systems

5.3 Prequalification Limits

5.3.1 Beam Limitations
45 5.3.2 Column Limitations
46 5.4 Column-Beam Relationship Limitations

5.5 Beam Flange-to-Column Flange Weld Limitations

5.6 Beam Web-to-Column Flange Connection Limitations
47 5.7 Fabrication of Flange Cuts
48 5.8 Design Procedure
51 Chapter 6 Bolted Unstiffened and Stiffened Extended End-Plate Moment Connections

6.1 General

6.2 Systems
52 6.3 Prequalification Limits

6.3.1 Beam Limitations

6.3.2 Column Limitations
54 6.4 Column-Beam Relationship Limitations

6.5 Continuity Plates

6.6 Bolts

6.7 Connection Detailing

6.7.1 Gage

6.7.2 Pitch and Row Spacing
56 6.7.3 End-Plate Width

6.7.4 End-Plate Stiffener
57 6.7.5 Finger Shims

6.7.6 Welding Details
59 6.8 Design Procedure
69 Chapter 7 Bolted Flange Plate (BFP) Moment Connection

7.1 General

7.2 Systems
70 7.3 Prequalification Limits

7.3.1 Beam Limitations

7.3.2 Column Limitations
71 7.4 Column-Beam Relationship Limitations

7.5 Connection Detailing

7.5.1 Plate Material Specifications

7.5.2 Beam Flange Welds

7.5.3 Single-Plate Shear Connection Welds

7.5.4 Bolt Requirements
72 7.5.5 Flange Plate Shims

7.6 Design Procedure
76 Chapter 8 Welded Unreinforced Flange-Welded Web (WUF-W) Moment Connection

8.1 General

8.2 Systems

8.3 Prequalifiation Limits

8.3.1 Beam Limitations
77 8.3.2 Column Limitations
78 8.4 Column-Beam Relationship Limitations

8.5 Beam Flange-to-Column Flange Welds

8.6 Beam Web-to-Column Connection Limitations
79 8.7 Design Procedure
82 Chapter 9 Kaiser Bolted Bracket (KBB) Moment Connection

9.1 General
83 9.2 Systems

9.3 Prequalification Limits

9.3.1 Beam Limitations
84 9.3.2 Column Limitations
85 9.3.3 Bracket Limitations

9.4 Column-Beam Relationship Limitations

9.5 Bracket-to-Column Flange Connection Limitations
86 9.6 Bracket-to-Beam Flange Connection Limitations

9.7 Beam Web-to-Column Connection Limitations
87 9.8 Connection Detailing

9.9 Design Procedure
94 Chapter 10 ConXtech ConXL Moment Connection

10.1 General
97 10.2 Systems
98 10.3 Prequalifiation Limits

10.3.1 Beam Limitations

10.3.2 Column Limitations
99 10.3.3 Collar Limitations
100 10.4 Collar Connectiion Limitations
101 10.5 Beam Web-to-Collar Connection Limitations
102 10.6 Beam Flange-to-Collar Flange Welding Limitations
103 10.7 Column-Beam Relationship Limitations

10.8 Design Procedure
118 Chapter 11 SidePlate Moment Connection

11.1 General
121 11.2 Systems
127 11.3 Prequalification Limits

11.3.1 Beam Limitations
129 11.3.2 Column Limitations
131 11.3.3 Connection Limitations
132 11.4 Column-Beam Relationship Limitations
136 11.5 Connection Welding Limitations

11.6 Connection Detailing
137 11.6.1 Plates/Angles

11.6.2 Welds
141 11.6.3 Bolts
145 11.7 Design Procedure
150 Chapter 12 Simpson Strong-Tie Strong Frame Moment Connection

12.1 General
152 12.2 Systems

12.3 Prequalification Limits

12.3.1 Beam Limitations

12.3.2 Column Limitations
153 12.3.3 Bolting Limitations
154 12.4 Column-Beam Relationship Limitations

12.5 Continuity Plates

12.6 Yield-Link Flange-to-Stem Weld Limitations

12.7 Fabrication of Yield-Link Cuts
156 12.8 Connection Detailing

12.8.1 Beam Coping

12.8.2 Yield-Links

12.8.3 Shear-Plate Connection Bolts

12.8.4 Shear-Plate Shear Connection Welds

12.8.5 Bolt Hole Requirements

12.8.6 Buckling Restraint Assembly
159 12.8.7 Shims

12.9 Design Procedure
171 Chapter 13 Double-Tee Moment Connection

13.1 General
173 13.2 Systems
175 13.3 Prequalification Limits

13.3.1 Beam Limitations

13.3.2 Column Limitations
176 13.4 Column-Beam Relationship Limitations

13.5 Connection Detailing

13.5.1 T-Stub Material Specifications

13.5.2 Continuity Plates

13.5.3 Single-Plate Shear Connection Welds

13.5.4 Bolts
177 13.5.5 T-Stub Shims

13.6 Design Procedure
188 Chapter 14 SlottedWeb (SW) Moment Connection

14.1 General

14.2 Systems

14.3 Prequalification Limits

14.3.1 Beam Limitations
189 14.3.2 Column Limitations
190 14.4 Column-Beam Relationship Limitations
191 14.5 Beam Flange-to-Column Flange Weld Limitations

14.6 Beam Web and Shear Plate Connection Limitations

14.7 Fabrication of Beam Web Slots
192 14.8 Design Procedure
197 Appendix A Casting Requirements

A1. Cast Steel Grade

A2. Quality Control (QC)

A2.1 Inspection and Nondestructive Testing Personnel

A2.2 First Article Inspection (FAI) of Castings

A2.3 Visual Inspection of Castings

A2.4 Nondestructive Testing (NDT) of Castings

A2.4a Procedures
198 A2.4b Required NDT

A2.5 Weld Repair Procedures

A2.6 Tensile Requirements

A2.7 Charpy V-Notch (CVN)
Requirements
199 A2.8 Casting Identification

A3. Manufacturing Documents

A3.1 Submittal to Patent Holder

A3.2 Submittal to Engineer of Record and Authority Having Jurisdiction
200 Appendix B Forging Requirements

B1. Forged Steel Grade

B2. Bar Stock

B3. Forging Temperature

B4. Heat Treatment

B5. Finish

B6. Quality Assurance

B7. Documentation
203 Commentary Introduction
204 Commentary Chapter 1 General

1.1 Scope
205 1.2 References

1.3 General
206 Commentary Chapter 2 Design Requirements

2.1 Special and Intermediate Moment Frame Connection Types
207 2.3 Members

2.3.2 Built-up Members
208 2.3.2b Built-up Columns
209 2.4 Connection Design Parameters

2.4.1 Resistance Factors

2.4.2 Plastic Hinge Location

2.4.3 Probable Maximum Moment at Plastic Hinge

2.4.4 Continuity Plates
212 Commentary Chapter 3 Welding Requirements

3.3 Backing at Beam-to-Column and Continuity Plate-to-Column Joints

3.3.1 Steel Backing at Continuity Plates

3.3.2 Steel Backing at Beam Bottom Flange
213 3.3.3 Steel Backing at Beam Top Flange

3.3.4 Prohibited Welds at Steel Backing

3.3.5 Nonfusible Backing at Beam Flange-to-Column Joints

3.4 Weld Tabs
214 3.5 Tack Welds

3.6 Continuity Plates
215 3.7 Quality Control and Quality Assurance
216 Commentary Chapter 4 Bolting Requirements

4.1 Fastener Assemblies

4.2 Installation Requirements

4.3 Quality Control and Quality Assurance
217 Commentary Chapter 5 Reduced Beam Section (RBS) Moment Connection

5.1 General
218 5.2 Systems

5.3 Prequalification Limits

5.3.1 Beam Limitations
219 5.3.2 Column Limitations
221 5.4 Column-Beam Relationship Limitations

5.5 Beam Flange-to-Column Flange Weld Limitations

5.6 Beam Web-to-Column Connection Limitations
222 5.7 Fabrication of Flange Cuts

5.8 Design Procedure
226 Commentary Chapter 6 Bolted Unstiffened and Stiffened Extended End-Plate Moment Connections

6.1 General

6.2 Systems
227 6.3 Prequalification Limits

6.3.1 Beam Limitations

6.3.2 Column Limitations

6.4 Column-Beam Relationship Limitations

6.5 Continuity Plates
228 6.6 Bolts

6.7 Connection Detailing
229 6.8 Design Procedure
230 Commentary Chapter 7 Bolted Flange Plate (BFP) Moment Connection

7.1 General
232 7.2 Systems

7.3 Prequalification Limits

7.3.1 Beam Limitations
233 7.3.2 Column Limitations

7.4 Column-Beam Relationship Limitations
234 7.5 Connection Detailing
235 7.6 Design Procedure
237 Commentary Chapter 8 Welded Unreinforced Flange-Welded Web (WUF-W) Moment Connection

8.1 General
239 8.3 Prequalification Limits

8.4 Column-Beam Relationship Limitations
240 8.5 Beam Flange-to-Column Flange Welds

8.6 Beam Web-to-Column Connection Limitations
241 8.7 Design Procedure
243 Commentary Chapter 9 Kaiser Bolted Bracket (KBB) Moment Connection

9.1 General

9.2 Systems
244 9.3 Prequalification Limits

9.3.1 Beam Limitations

9.3.2 Column Limitations
245 9.3.3 Bracket Limitations

9.4 Column-Beam Relationship Limitations

9.5 Bracket-to-Column Flange Connection Limitations
246 9.6 Bracket-to-Beam Flange Connection Limitations
247 9.7 Beam Web-to-Column Connection Limitations
248 9.8 Connection Detailing

9.9 Design Procedure
251 Commentary Chapter 10 ConXtech ConXL Moment Connection

10.1 General
253 10.2 Systems

10.3 Prequalification Limits

10.3.1 Beam Limitations
254 10.3.2 Column Limitations
255 10.3.3 Collar Limitations

10.4 Collar Connection Limitations

10.5 Beam Web-to-Collar Connection Limitations

10.6 Beam Flange-to-Collar Flange Welding Limitations

10.7 Column-Beam Relationship Limitations
256 10.8 Design Procedure
258 Commentary Chapter 11 SidePlate Moment Connection

11.1 General
267 11.2 Systems
268 11.3 Prequalification Limits

11.3.1 Beam Limitations
272 11.3.2 Column Limitations
274 11.3.3 Connection Limitations
275 11.4 Column-Beam Relationship Limitations
276 11.5 Connection Welding Limitations
277 11.6 Connection Detailing

11.7 Design Procedure
289 Commentary Chapter 12 Simpson Strong-Tie Strong Frame Moment Connection

12.1 General
294 12.3 Prequalification Limits

12.3.1 Beam Limitations
295 12.3.2 Column Limitations
296 12.3.3 Bolting Limitations

12.4 Column-Beam Relationship Limitations

12.5 Continuity Plates
297 12.6 Yield-Link Flange-to-Stem Weld Limitations

12.7 Fabrication of Yield-Link Cuts

12.8 Connection Detailing
298 12.9 Design Procedure
302 Commentary Chapter 13 Double-Tee Moment Connection

13.1 General
303 13.2 Systems
304 13.3 Prequalification Limits

13.5 Connection Detailing

13.5.1 T-Stub Material Specification

13.5.2 Continuity Plates

13.5.4 Bolts
305 13.5.5 T-Stub Shims

13.6 Design Procedure
312 Commentary Chapter 14 SlottedWeb (SW) Moment Connection

14.1 General
313 14.2 Systems

14.3 Prequalification Limits

14.3.1 Beam Limitations
314 14.3.2 Column Limitations

14.4 Column-Beam Relationship Limitations

14.5 Beam Flange-to-Column Weld Limitations
315 14.6 Beam Web and Shear Plate Connection Limitations

14.7 Fabrication of Beam Web Slots

14.8 Design Procedure
317 Commentary Appendix A Casting Requirements

A1. Cast Steel Grade

A2. Quality Control (QC)

A2.2 First Article Inspection (FAI) of Castings

A2.3 Visual Inspection of Castings

A2.4 Nondestructive Testing (NDT) of Castings
318 A2.6 Tensile Requirements
319 A3. Manufacturer Documents
320 Commentary Appendix B Forging Requirements
321 References
338 Back Cover

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