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All rights reserved. This book or any part thereof must not be reproduced in any form without the written permission of the publisher. 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. 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.
Supplement No. Accordingly, it is not feasible for it to also cover all of the special and unique problems encountered within the full range of structural design practice. In addition, seven mandatory appendices, a list of Symbols, and Glossary are part of this document. Terms that appear in the Glossary are generally italicized where they first appear in a sub-section, throughout these Provisions.
A nonmandatory Commentary with background information is also provided. Recognizing that rapid and significant changes in the knowledge base were occurring for the seismic design of steel buildings, especially moment frames, the AISC Committee on Specifications committed to generating frequent supplements to the Provisions.
This commitment was intended to keep the provisions as current as possible. Because the extent of changes that have been made to these Provisions, as a result of incorporating both technical changes and the unified format is so large, they are being republished in their entirety.
A major update to the commentary is also provided. A number of other significant technical modifications are included, as follows: Seismic Provisions for Structural Steel Buildings, March 9, , incl. For each system, welds considered to be demand critical are defined. For each system, what areas are considered to be protected zones are defined. The AISC Committee on Specifications gives final approval of the document through an ANSI-accredited balloting process, and has enhanced these Provisions through careful scrutiny, discussion, and suggestions for improvement.
The reader is cautioned that professional judgment must be exercised when data or recommendations in these provisions are applied, as described more fully in the disclaimer notice preceding the Preface. Fisher, Chairman Roger E. Ferch, Vice Chairman Hansraj G. Ashar William F. Baker John M. Barsom William D. Bast Reidar Bjorhovde Roger L. Brockenbrough Gregory G. Deierlein Duane S. Ellifritt Bruce R. Fenves John W. Fisher Timothy P.
Fraser Theodore V. Galambos Louis F. Geschwindner Lawrence G. Griffis John L. Tony C. Hazel Mark V. Holland Lawrence A. Kloiber Roberto T. Leon Stanley D. Lindsey James O. Malley Richard W. Marshall deceased Harry W. Martin David L. McKenzie Duane K. Miller Thomas M. Murray R. Shankar Nair Jack E.
Petersen Douglas A. Rees-Evans Robert E. Shaw, Jr. Donald R. Sherman Lee Shoemaker William A. Thornton Raymond H. Tide Cynthia J. Duncan, Secretary. The Committee gratefully acknowledges the following task committee TC 9—Seismic Design for their development of this document. James O. Malley, Chairman Mark C. Deierlein Richard M. Drake Michael D. Engelhardt Roger E. Ferch Timothy P. Fraser Subhash C. Goel James R. Harris Patrick M. Roberto T. Leon Robert T. Lyons Sanjeev R.
Malushte Harry W. Martin Clarkson W. Pinkham Rafael Sabelli Thomas A. Sabol Robert E. Kurt D. Swensson Cynthia J. Material Specifications. Structural Design Drawings and Specifications. Loads and Load Combinations. Column Strength. Width-Thickness Limitations. Column Splices. Basis for Prequalification. Visual Welding Inspection. Sources of Inelastic Rotation.
General Requirements. Tension Testing Requirements for Structural Steel. Design of Brace Test Specimen. Tension Testing Requirements. Ultrasonic Testing. QC Welding Inspectors. Intermixed Filler Metals. Welding Processes. Structural Steel. Welded Joints.
Beam and Column Limitations. Continuity Plates. Column-Beam Moment Ratio. Lateral Bracing at Beam-to-Column Connections.