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AISC STANDARD Specification for Structural Steel Buildings Supersedes the Specification for Structural Steel Buildings, Allowable Stress Design and Plastic Design dated June 1, 1989 and the Load and Resistance Factor Design Specification for Structural Steel Buildings dated December 27, 1999 PUBLIC REVIEW DRAFT DATED DECEMBER 1, 2003 Approved by the AISC Committee on Specifications and issued by the AISC Board of Directors ???, 2005 AMERICAN INSTITUTE OF STEEL CONSTRUCTION, INC. ii DRAFT iii Specification for Structural Steel Buildings Supersedes the Load and Resistance Factor Design Specification for Structural Steel Buildings dated December 27, 1999, the Specification for Structural Steel Buildings – Allowable Stress Design and Plastic Design dated June 1, 1989, including Supplement No. 1 and all previous versions. PUBLIC REVIEW DRAFT DATED DECEMBER 1, 2003 DRAFT AMERICAN INSTITUTE OF STEEL CONSTRUCTION, INC. One East Wacker Drive, Suite 3100 Chicago, Illinois 60601-2001 Copyright © 2005 iv by American Institute of Steel Construction, Inc. 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 and is used under license. The information presented in this publication has been prepared in accordance with recognized engineering principles and is for general information only. While it is believed to be accurate, this information should not be used or relied upon for any specific application without competent professional examination and verification of its accuracy, suitability, and applicability by a licensed engineer, architect or other professional. The publication of the material contained herein is not intended as a representation or warranty on the part of the American Institute of Steel Construction, Inc. or of any other person named herein, that this information is suitable for any general or particular use or of freedom from infringement of any patent or patents. Anyone making use of this information assumes all liability arising from such use. Caution must be exercised when relying upon other specifications and codes 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. The American Institute of Steel Construction, Inc. bears no responsibility for such material other than to refer to it an d DRAFT incorporate it by reference at the time of the initial publication of this edition. Printed in the United States of America v PREFACE {to be revised} As have all AISC Specifications, this Specification has been based upon past successful usage, advances in the state of knowledge, and changes in design practice. This Specification has been developed as a consensus document to provide a uniform practice in the design of steel-framed buildings and other structures. The intention is to provide design criteria for routine use and not to provide specific criteria for infrequently encountered problems, which occur in the full range of structural design. This Specification is the result of the consensus deliberations of a committee of structural engineers with wide experience and high professional standing, representing a wide geographical distribution throughout the U.S. The committee includes approximately equal numbers of engineers in private practice and code agencies, engineers involved in research and teaching, and engineers employed by steel fabricating and producing companies. The contributions and assistance of more than 50 additional professional volunteers working in 15 task committees are also hereby acknowledged. The Symbols, Glossary, and Appendices to this Specification are an integral part of the Specification. User Notes and a non-mandatory Commentary has been prepared to provide background for the Specification provisions and the user is encouraged to consult it. DRAFT The reader is cautioned that professional judgment must be exercised when data or recommendations in the Specification are applied, as described more fully in the disclaimer notice preceding this Preface. By the Committee, James M. Fisher, Chairman James R. Harris Roger E. Ferch, Vice Chairman Tony C. Hazel Hansraj G. Ashar Mark V. Holland William F. Baker Lawrence A. Kloiber John M. Barsom Roberto T. Leon William D. Bast James O. Malley Reidar Bjorhovde Richard W. Marshall Roger L. Brockenbrough Harry W. Martin Michael Engelhardt David L. McKenzie Gregory G. Deierlein Duane K. Miller Duane S. Ellifritt Thomas M. Murray Bruce R. Ellingwood R. Shankar Nair Shu-Jin Fang Jack E. Petersen Steven J. Fenves Douglas A. Rees-Evans John W. Fisher Donald R. Sherman Tim Fraser Lee Shoemaker Theodore V. Galambos William A. Thornton Louis F. Geschwindner Raymond H. R. Tide Lawrence G. Griffis Robert Shaw John L. Gross Cynthia J. Duncan, Secretary vi DRAFT American Institute of Steel Construction, Inc. November 2003 1 [NOTE: User Notes are non-mandatory and not part 1 of the ballot.] 2 CHAPTER A 3 GENERAL PROVISIONS 4 5 6 This chapter states the scope of the Specification, summarizes referenced 7 specification, code, and standard documents, and provides requirements for 8 materials and contract documents. 9 10 This chapter is organized as follows: 11 12 A1. Scope 13 A2. Referenced Specifications, Codes, and Standards 14 A3. Material 15 A4. Contract Documents 16 17 A1. SCOPE 18 19 The Specification for Structural Steel Buildings hereafter referred to as the 20 Specification, shall apply to the design of the structural steel system, where 21 the steel elements are enumerated in the AISC Code of Standard Practice for 22 Steel Buildings and Bridges Section 2.1. As used in this Specification, the 23 term structural steel refers to the steel elements of the structural steel frame 24 essential to the support of the applied loads. 25 26 This Specification includes the list of symbols, the glossary, Chapters A 27 through M and Appendices 1 through 7. The commentary and the user notes 28 interspersed throughout are not part of this specification. 29 30 U ser Note: User notes are intended to provide concise and practical guidance 31 in the application of the provisions. 32 33 This Specification sets forth criteria for the design of structural steel buildings 34 and other structures. Where conditions are not covered by the Specification, 35 designs are permitted to be based on tests or analysis, subject to the approval 36 of the authority having jurisdiction. Alternate methods of analysis and design 37 shall be permitted, provided such alternate methods or criteria are acceptable 38 to the authority having jurisdiction. 39 40 User Note: For the design of structural members, other than HSS, that are 41 cold-formed to shapes with elements not more than 1-in. (25 mm) in 42 thickness, the provisions in the AISI North American Specification for the 43 Design of Cold-Formed Steel Structural Members is recommended. 44 45 1. Low-Seismic Applications 46 47 When the seismic response modification coefficient R (as specified in the 48 Applicable Building Code) is taken equal to or less than 3, the design, 49 fabrication, and erection of structural-steel-framed buildings shall comply 50 with this Specification. 2 51 52 2. High-Seismic Applications 53 54 When the seismic response modification coefficient R (as specified in the 55 Applicable Building Code) is taken greater than 3, the design, fabrication and 56 erection of structural-steel-framed buildings shall comply with the 57 requirements in the Seismic Provisions for Structural Steel Buildings 58 (ANSI/AISC 341). 59 60 3. Nuclear Applications 61 62 The design of nuclear structures shall comply with the requirements of the 63 Specification for the Design, Fabrication, and Erection of Steel Safety- 64 Related Structures in Nuclear Facilities (ANSI/AISC N690) including 65 Supplement No. 2 or the Load and Resistance Factor Design Specification 66 for Steel Safety-Related Structures for Nuclear Facilities (ANSI/AISC 67 N690L). 68 DRAFT 69 A2. REFERENCED SPECIFICATIONS, CODES AND STANDARDS 70 (specific referenced years to be added prior to final review) 71 72 The following specifications, codes and standards are referenced in this 73 Specification: 74 75 ACI International (ACI) 76 Building Code Requirements for Structural Concrete and Commentary, 77 ACI 318-02 78 Metric Building Code Requirements for Structural Concrete and Commen- 79 tary, ACI 318M-02 80 81 American Institute of Steel Construction, Inc. (AISC) 82 Code of Standard Practice for Steel Buildings and Bridges, 2000 83 Seismic Provisions for Structural Steel Buildings, 2002, ANSI/AISC 341-02 84 Specification for the Design, Fabrication and Erection of Steel Safety-Related 85 Structures for Nuclear Facilities, 1994, including Supplement No. 2, 86 ANSI/AISC N690-94 87 Load and Resistance Factor Design Specification for Steel Safety-Related 88 Structures for Nuclear Facilities, 2003, ANSI/AISC N690L-03 89 90 American Society of Civil Engineers (ASCE) 91 Minimum Design Loads for Buildings and Other Structures, SEI/ASCE 7-02 92 Standard Calculation Methods for Structural Fire Protection, ASCE/SFPE 93 29-99 94 95 American Society of Mechanical Engineers (ASME) 96 Fasteners for Use in Structural Applications, ASME B18.2.6-96 97 Surface Texture, Surface Roughness, Waviness, and Lay, ASME B46.1-95 98 99 American Society for Testing and Materials (ASTM) 100 A6/A6M-?year? Standard Specification for General Requirements for Rolled 101 Structural Steel Bars, Plates, Shapes, and Sheet Piling 102 A27/A27M-?year? Standard Specification for Steel Castings, Carbon, for 103 General Application 104 A36/A36M-?year? Standard Specification for Carbon Structural Steel American Institute of Steel Construction, Inc. November 2003 3 105 A53/A53M-?year? Standard Specification for Pipe, Steel, Black and Hot- 106 Dipped, Zinc-Coated, Welded and Seamless 107 A193/A193M-?year? Standard Specification for Alloy-Steel and Stainless 108 Steel Bolting Materials for High-Temperature Service 109 A194/A194M-?year? Standard Specification for Carbon and Alloy Steel 110 Nuts for Bolts for High Pressure or High-Temperature Service, or Both 111 A242/A242M-?year? Standard Specification for High-Strength Low-Alloy 112 Structural Steel 113 A283/A283M-?year? Standard Specification for Low and Intermediate 114 Tensile Strength Carbon Steel Plates 115 A307-?year? Standard Specification for Carbon Steel Bolts and Studs, 60 116 000 PSI Tensile Strength 117 A325-?year? Standard Specification for Structural Bolts, Steel, Heat 118 Treated, 120/105 ksi Minimum Tensile Strength 119 A325M-?year? Standard Specification for High-Strength Bolts for Structural 120 Steel Joints (Metric) 121 A354-?year? Standard Specification for Quenched and Tempered Alloy Steel 122 Bolts, SDtuds, aRnd OtAher ExFternaTlly Threaded Fasteners 123 A370-?year? Standard Test Methods and Definitions for Mechanical Testing 124 of Steel Products 125 A449-?year? Standard Specification for Quenched and Tempered Steel Bolts 126 and Studs 127 A490-?year? Standard Specification for Heat-Treated Steel Structural Bolts, 128 150 ksi Minimum Tensile Strength 129 A490M-?year? Standard Specification for High-Strength Steel Bolts, Classes 130 10.9 and 10.9.3, for Structural Steel Joints (Metric) 131 A500-?year? Standard Specification for Cold-Formed Welded and Seamless 132 Carbon Steel Structural Tubing in Rounds and Shapes 133 A501-?year? Standard Specification for Hot-Formed Welded and Seamless 134 Carbon Steel Structural Tubing 135 A502-?year? Standard Specification for Steel Structural Rivets (Withdrawn 136 1999) 137 A514/A514M-?year? Standard Specification for High-Yield Strength, 138 Quenched and Tempered Alloy Steel Plate, Suitable for Welding 139 A529/A529M-?year? Standard Specification for High-Strength Carbon- 140 Manganese Steel of Structural Quality 141 A563-?year? Standard Specification for Carbon and Alloy Steel Nuts 142 A563M-?year? Standard Specification for Carbon and Alloy Steel Nuts 143 [Metric] 144 A568/A568M-?year? Standard Specification for Steel, Sheet, Carbon, and 145 High-Strength, Low-Alloy, Hot-Rolled and Cold-rolled, General Re- 146 quirements for 147 A572/A572M-?year? Standard Specification for High-Strength Low-Alloy 148 Columbium-Vanadium Structural Steel 149 A588/A588M-?year? Standard Specification for High-Strength Low-Alloy 150 Structural Steel with 50 ksi [345MPa] Minimum Yield Point to 4 in. 151 [100mm] Thick 152 A606-?year? Standard Specification for Steel, Sheet and Strip, High- 153 Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, with Improved At- 154 mospheric Corrosion Resistance 155 A618-?year? Standard Specification for Hot-Formed Welded and Seamless 156 High-Strength Low-Alloy Structural Tubing 157 A673/A673M-?year? Standard Specification for Sampling Procedure for 158 Impact Testing of Structural Steel American Institute of Steel Construction, Inc. November 2003 4 159 A668/A668M-?year? Standard Specification for Steel Forgings, Carbon 160 and Alloy, for General Industrial Use 161 A709/A709M-?year? Standard Specification for Carbon and High-Strength 162 Low-Alloy Structural Steel Shapes, Plates, and Bars and Quenched-and- 163 Tempered Alloy Structural Steel Plates for Bridges 164 A751-?year? Standard Test Methods, Practices, and Terminology for 165 Chemical Analysis of Steel Products 166 A847-?year? Standard Specification for Cold-Formed Welded and Seamless 167 High-Strength, Low-Alloy Structural Tubing with Improved Atmospheric 168 Corrosion Resistance 169 A852/A852M-?year? Standard Specification for Quenched and Tempered 170 Low-Alloy Structural Steel Plate with 70 ksi [485 MPa] Minimum Yield 171 Strength to 4 in. [100 mm] Thick 172 A913/A913M-?year? Standard Specification for High-Strength Low-Alloy 173 Steel Shapes of Structural Quality, Produced by Quenching and Self- 174 Tempering Process (QST) 175 A992/A992M-?year? Standard Specification for Steel for Structural Shapes 176 for Use in Building Framing DRAFT 177 A1011/A1011M-?year? Standard Specification for Steel, Sheet and Strip, 178 Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy and High- 179 Strength Low-Alloy with Improved Formability 180 C33-?year? Standard Specification for Concrete Aggregates 181 C330-?year? Standard Specification for Lightweight Aggregates for 182 Structural Concrete 183 E119-?year? Standard Test Methods for Fire Tests of Building Construction 184 and Materials 185 E709-?year? Standard Guide for Magnetic Particle Examination 186 F436-?year? Standard Specification for Hardened Steel Washers 187 F606-?year? Standard Test Methods for Determining the Mechanical 188 Properties of Externally and Internally Threaded Fasteners, Washers, 189 and Rivets 190 F606M-?year? Standard Test Methods for Determining the Mechanical 191 Properties of Externally and Internally Threaded Fasteners, Washers, 192 and Rivets [Metric] 193 F959-?year? Standard Specification for Compressible-Washer-Type Direct 194 Tension Indicators for Use with Structural Fasteners 195 F1554-?year? Standard Specification for Anchor Bolts, Steel, 36, 55, and 196 105 ksi Yield Strength 197 F1852-?year? Standard Specification for "Twist-Off" Type Tension Control 198 Structural Bolt/Nut/Washer Assemblies, Steel, Heat Treated, 120/105 ksi 199 Minimum Tensile Strength 200 201 American Welding Society (AWS) 202 AWS D1.1:2002 Structural Welding Code Steel 203 AWS A5.1-?year? Specification for Carbon Steel Electrodes for Shielded 204 Metal Arc Welding 205 AWS A5.5-?year? Specification for Low-Alloy Steel Electrodes for Shielded 206 Metal Arc Welding 207 AWS A5.17/A5.17M-?year? Specification for Carbon Steel Electrodes and 208 Fluxes for Submerged Arc Welding 209 AWS A5.18-?year? Specification for Carbon Steel Electrodes and Rods for 210 Gas Shielded Arc Welding 211 AWS A5.20-?year? Specification for Carbon Steel Electrodes for Flux Cored 212 Arc Welding American Institute of Steel Construction, Inc. November 2003