STRUCTURAL STEEL DESIGNER’S HANDBOOK About ASCE Press American Society of Civil Engineers (ASCE) 1801 Alexander Bell Drive, Reston, VA 20191 www.asce.org Founded in 1852, ASCE represents more than 140,000 members of the civil engineering profession worldwide and is America’s oldest national engineering society. ASCE’s mission is to provide essential value to our members and partners, advance civil engineering, and serve the public good. ASCE Press publishes a carefully chosen selection of books aimed at an audience of civil engineers and allied professionals. About the International Code Council The International Code Council (ICC), a membership association dedicated to building safety, fire prevention, and energy efficiency, develops the codes and standards used to construct residential and commercial buildings, including homes and schools. The mission of ICC is to provide the highest quality codes, standards, products, and services for all concerned with the safety and performance of the built environment. Most United States cities, counties, and states choose the International Codes, building safety codes developed by the International Code Council. The International Codes also serve as the basis for construction of federal properties around the world, and as a reference for many nations outside the United States. The Code Council is also dedicated to innovation and sustainabili- ty, and a Code Council subsidiary, ICC Evaluation Service, issues Evaluation Reports for innovative products and reports of Sustainable Attributes Verification and Evaluation (SAVE). Headquarters: 500 New Jersey Avenue NW, 6th Floor, Washington, DC 20001-2070 District Offices: Birmingham, AL; Chicago, IL; Los Angeles, CA 1-888-422-7233; www.iccsafe.org STRUCTURAL STEEL DESIGNER’S HANDBOOK Roger L. Brockenbrough, P.E. Editor President R. L. Brockenbrough & Associates, Inc. Pittsburgh, Pennsylvania Frederick S. Merritt, P.E. Editor (Deceased) Consulting Engineer West Palm Beach, Florida Fifth Edition New York Chicago San Francisco Lisbon London Madrid Mexico City Milan New Delhi San Juan Seoul Singapore Sydney Toronto Copyright © 2011, 2006, 1999, 1994, 1972 by The McGraw-Hill Companies, Inc. All rights reserved. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher. ISBN: 978-0-07-166665-7 MHID: 0-07-166665-6 The material in this eBook also appears in the print version of this title: ISBN: 978-0-07-166666-4, MHID: 0-07-166666-4. All trademarks are trademarks of their respective owners. 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Under no circumstances shall McGraw-Hill and/or its licensors be liable for any indirect, incidental, special, punitive, consequential or similar damages that result from the use of or inability to use the work, even if any of them has been advised of the possibility of such damages. This limitation of liability shall apply to any claim or cause whatsoever whether such claim or cause arises in contract, tort or otherwise. ABOUTTHE EDITORS Roger L. Brockenbrough, P.E., is president of R. L. Brockenbrough & Associates, Inc. He was a senior research consultant for U.S. Steel, where he worked for 30 years until retiring. Mr. Brockenbrough is a member of AISI, AISC, and ASTM committees, and is an ASCE Fellow. He is the editor of Highway Engineering Handbook, now in its Third Edition, and a contributor to Standard Handbook for Civil Engineers, now in its Fifth Edition. Frederick S. Merritt,P.E.(deceased), was a consulting engineer for many years with expe- rience in building and bridge design, structural analysis, and construction management. A Fellow of ASCE and a Senior Member of ASTM, he was a senior editor of Engineering News-Recordand author or editor of many books, including Standard Handbook for Civil Engineers, now in its Fifth Edition. This page intentionally left blank CONTENTS Contributors xiii Preface to the Fifth Edition xv Preface to the Second Edition xvii Factors for Conversion to SI Units of Measurement xix Chapter 1. Properties of Structural Steels and Effects of Steelmaking and Fabrication Roger L.Brockenbrough,P.E. 1.1 1.1 Structural Steel Shapes and Plates / 1.1 1.2 Steel-Quality Designations / 1.7 1.3 Steel Sheet and Strip for Structural Applications / 1.7 1.4 Tubing for Structural Applications / 1.10 1.5 Steel Cable for Structural Applications / 1.11 1.6 Tensile Properties / 1.12 1.7 Properties in Shear / 1.14 1.8 Hardness Tests / 1.14 1.9 Effect of Cold Work on Tensile Properties / 1.15 1.10 Effect of Strain Rate on Tensile Properties / 1.16 1.11 Effect of Elevated Temperatures on Tensile Properties / 1.17 1.12 Fatigue / 1.20 1.13 Brittle Fracture / 1.20 1.14 Residual Stresses / 1.22 1.15 Lamellar Tearing / 1.23 1.16 Welded Splices in Heavy Sections / 1.24 1.17 k-Area Cracking / 1.24 1.18 Variations in Mechanical Properties / 1.25 1.19 Changes in Carbon Steels on Heating and Cooling / 1.25 1.20 Effects of Grain Size / 1.27 1.21 Annealing and Normalizing / 1.28 1.22 Effects of Chemistry on Steel Properties / 1.28 1.23 Steelmaking Methods / 1.30 1.24 Casting and Hot Rolling / 1.31 1.25 Effects of Punching Holes and Shearing / 1.33 1.26 Effects of Welding / 1.34 1.27 Effects of Thermal Cutting / 1.34 Chapter 2. Fabrication and Erection Thomas Schlafly 2.1 2.1 Estimates, Material Orders, and Shop Drawings / 2.1 2.2 Requirements for Drawings / 2.3 2.3 Fabrication Practices and Processes: Material Preparation / 2.5 2.4 Fabrication Practices and Processes: Assembly, Fitting, and Fastening / 2.8 2.5 Shop Assembly / 2.12 2.6 Rolled Sections / 2.14 2.7 Built-Up Sections / 2.15 vii viii CONTENTS 2.8 Cleaning and Painting / 2.17 2.9 Fabrication Tolerances / 2.18 2.10 Steel Frame Erection / 2.19 2.11 Erection Equipment / 2.19 2.12 Erection Methods for Buildings / 2.24 2.13 Erection Procedure for Bridges / 2.26 2.14 Field Tolerances / 2.28 2.15 Coordination and Constructability / 2.29 2.16 Safety Concerns / 2.29 2.17 Quality Control and Quality Assurance / 2/29 Chapter 3. Connections Larry S.Muir,P.E.,andWilliam A.Thornton,Ph.D.,P.E. 3.1 3.1 General Considerations for Connection Design / 3.1 3.2 Design of Fasteners and Welds / 3.10 3.3 General Connection Design Procedure / 3.40 3.4 Shear and Axial Beam End Connections / 3.51 3.5 Axial Connections / 3.59 3.6 Moment Connections / 3.77 3.7 Vertical Brace Design by Uniform Force Method / 3.85 3.8 References / 3.104 Chapter 4. Building Codes,Loads,and Fire Protection Nestor R.Iwankiw,Ph.D.,P.E. 4.1 4.1 Building Codes / 4.1 4.2 Approval of Special Construction / 4.2 4.3 Standard Specifications / 4.2 4.4 Building Occupancy Loads / 4.2 4.5 Roof Loads / 4.7 4.6 Wind Loads / 4.13 4.7 Seismic Loads / 4.21 4.8 Impact Loads / 4.30 4.9 Crane-Runway Loads / 4.30 4.10 Self-Straining Load Effects / 4.31 4.11 Combined Loads / 4.31 4.12 Fire Protection / 4.32 Chapter 5. Criteria for Building Design Roger L.Brockenbrough,P.E. 5.1 5.1 Materials, Design Methods, and Other Considerations / 5.2 5.2 Design for Stability / 5.7 5.3 Design of Tension Members / 5.11 5.4 Design of Compression Members / 5.14 5.5 Design of Flexural Members / 5.19 5.6 Design of Members for Shear / 5.28 5.7 Design for Combined Forces and Torsion / 5.32 5.8 Design of Composite Members / 5.37 5.9 Design of Connections / 5.46 Chapter 6. Design of Building Members Ali A.K.Haris,Ph.D.,P.E.,and Kaise Haris 6.1 6.1 Tension Members / 6.2 6.2 Example—LRFD for Double-Angle Hanger / 6.2 6.3 Example—LRFD for Wide-Flange Truss Members / 6.3 6.4 Compression Members / 6.4 CONTENTS ix 6.5 Example—LRFD for Steel Pipe in Axial Compression / 6.5 6.6 Example—LRFD for Wide-Flange Section with Axial Compression / 6.6 6.7 Example—LRFD for Double Angles with Axial Compression / 6.6 6.8 Steel Beams / 6.8 6.9 Example—LRFD for Simple-Span Floor Beam / 6.10 6.10 Example—LRFD for Floor Beam with Unbraced Top Flange / 6.13 6.11 Example—LRFD for Floor Beam with Overhang / 6.14 6.12 Composite Beams / 6.17 6.13 LRFD for Composite Beam with Uniform Loads / 6.19 6.14 Example—LRFD for Composite Beam with Concentrated Loads and End Moments / 6.29 6.15 Example—LRFD for Wide-Flange Column in a Multistory Rigid Frame / 6.33 Chapter 7. Floor and Roof Systems Daniel A.Cuoco,P.E.,F.ASCE 7.1 FLOORDECKS 7.1 Concrete Fill on Metal Deck / 7.1 7.2 Precast-Concrete Plank / 7.7 7.3 Cast-in-Place Concrete Slabs / 7.8 ROOFDECKS 7.4 Metal Roof Deck / 7.9 7.5 Lightweight Precast-Concrete Roof Panels / 7.11 7.6 Wood-Fiber Planks / 7.12 7.7 Gypsum-Concrete Decks / 7.12 FLOORFRAMING 7.8 Rolled Shapes / 7.14 7.9 Open-Web Joists / 7.16 7.10 Lightweight Steel Framing / 7.16 7.11 Trusses / 7.17 7.12 Stub Girders / 7.19 7.13 Staggered Trusses / 7.19 7.14 Castellated Beams / 7.21 7.15 LRFD Examples for Composite Floors / 7.21 7.16 Dead-Load Deflection / 7.24 7.17 Fire Protection / 7.24 7.18 Vibrations / 7.24 ROOFFRAMING 7.19 Plate Girders / 7.25 7.20 Space Frames / 7.25 7.21 Arched Roofs / 7.26 7.22 Dome Roofs / 7.27 7.23 Cable Structures / 7.28 Chapter 8. Lateral-Force Design Charles W.Roeder,Ph.D.,P.E 8.1 8.1 Description of Wind Forces / 8.1 8.2 Determination of Wind Loads / 8.5 8.3 Seismic Loads in Model Codes / 8.5 8.4 Seismic Design Loads / 8.6 8.5 Dynamic Method of Seismic Load Distribution / 8.11 8.6 Alternate Seismic Design Methods / 8.13 8.7 Structural Steel Systems for Seismic Design / 8.14 8.8 Seismic-Design Limitations on Steel Frames / 8.19 8.9 Forces in Frames Subjected to Lateral Loads / 8.33 8.10 Member and Connection Design for Lateral Loads / 8.39