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Page 1: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE
Page 2: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE

Analysis and DesignPractice of Steel Structures

SECOND EDITION

PHI Learning Private LimitedDelhi-110092

2014

KARUNA MOY GHOSHCEng, FIStructE (London), MIE Civil Engg (India)

Formerly Chief Structural EngineerKaiser Engineers and Constructors, Inc.

Page 3: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE

ANALYSIS AND DESIGN PRACTICE OF STEEL STRUCTURES, Second EditionKaruna Moy Ghosh

© 2014 by PHI Learning Private Limited, Delhi. All rights reserved. No part of this book may bereproduced in any form, by mimeograph or any other means, without permission in writing from thepublisher.

ISBN-978-81-203-4937-7

The export rights of this book are vested solely with the publisher.

Third Printing (Second Edition) … … February, 2014

Published by Asoke K. Ghosh, PHI Learning Private Limited, Rimjhim House, 111, Patparganj IndustrialEstate, Delhi-110092 and Printed by Baba Barkha Nath Printers, Bahadurgarh, Haryana-124507.

Page 4: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE

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Page 5: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE

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Page 6: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE

Contents v

3.6 Longitudinal Bracing System along frame A to Resist Crane’s LongitudinalTraction Force 643.6.1 Design of Bracing Members 643.6.2 Bolt Connections to Bracings 66

3.7 Design of Bearings of Gantry Girder 663.7.1 Design Considerations 663.7.2 Material Properties 673.7.3 Design of Bearings 67

Indian Standard Code of Practice IS 800:2007 703.8 Mechanical Properties of Structural Steel 70

3.8.1 Bolts, Nuts and Washers 713.8.2 Welding Consumable Arc Welding 713.8.3 Design of Welded and Bolted Connections 713.8.4 Method of Connection 723.8.5 Design of Fillet Weld and Welding 723.8.6 Bolted Connections 743.8.7 High Strength Friction Grip or Slip Resistance Type Bolting 763.8.8 Case When Slip between Bolted Plates Cannot be Tolerated at Working Loads

(Slip Critical Connections) 763.8.9 Slip Resistance 763.8.10 Capacity After Slipping 773.8.11 Tension Resistance 773.8.12 Combined Shear and Tension 78

3.9 Structural Analysis and Design 783.9.1 Ultimate Limit State Method 783.9.2 Serviceability Limit State 783.9.3 Design Actions 793.9.4 Design Strength 793.9.5 Factors Governing the Ultimate Strength in Ultimate Limit State Design Method 803.9.6 Serviceability Limit State Design Method 80

3.10 Design of Members 813.10.1 Design of Compression Members 81

3.11 Analysis and Design of Crane Girder and Components 833.11.1 Gantry Girder (in Biaxial Bending and Shear) 833.11.2 Loadings on Gantry Girder 843.11.3 Moment Influence Lines for Moving Wheel Loads 853.11.4 Characteristic Maximum Dynamic Moments (Unfactored) 853.11.5 Characteristic Maximum Dynamic Shear at Support (Unfactored) 853.11.6 Characteristic Maximum Dynamic Reaction (Unfactored) 853.11.7 Characteristic Maximum Design Moment and Shear Due to

Self-weight of Gantry Girder 863.11.8 Total Ultimate Design Moment 863.11.9 Total Ultimate Design Shear 86

3.12 Design of Section 863.12.1 Design Strength 863.12.2 Initial Sizing of Section 873.12.3 Classification of Cross Section 87

Page 7: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE

vi Contents

3.12.4 Moment Capacity 883.12.5 Check for Moment Buckling Resistance Due to Lateral Torsional Buckling 903.12.6 Web Bearing Capacity, Buckling Resistance and Stiffener Design:

Behaviour of Stress Distribution in the Web of Deep Gantry Girder 913.13 Horizontal Surge Girder (Compression and Tension Members) 101

3.13.1 Design Considerations 1013.13.2 Ultimate Horizontal Moment Due to Surge 1013.13.3 Design of Section 102

3.14 Gantry a Frames (Compression) 1033.14.1 Design Considerations 1033.14.2 Loadings 1033.14.3 Characteristic (Unfactored) Vertical Loads on Trestle Columns 1063.14.4 Ultimate Vertical Design Load on Columns 1073.14.5 Design of Section of Members 1083.14.6 Design of Thickness and Size of Base Plate of Frame A 1123.14.7 Design of Holding-down Bolts 1133.14.8 Weld Connection between Base Plate and Column 1153.14.9 Bolted Connections 116

3.15 Longitudinal Bracing System along Frame A to Resist Crane LongitudinalTraction Force 1183.15.1 Design of Bracing Members 1183.15.2 Bolt Connections to Bracings 121

3.16 Design of Bearings of Gantry Girder 1213.16.1 Design Considerations 1213.16.2 Material Properties 1213.16.3 Design of Bearings 122

References 123

4 Conveyor Structural System from HBI (Heavy Briquette Iron)Building to Mill Building 125–178

4.1 Design Philosophy 1254.2 Brief Description 125

4.2.1 Functions 1254.2.2 Choice of Open or Covered Structure 1274.2.3 Selection of Construction Materials 1274.2.4 Choice of Shop and Site Connection 1274.2.5 Sequence and Method of Erection of Steel Structure 1274.2.6 Analysis and Design of Conveyor Structural System 127

4.3 Analysis and Design of Conveyor Bridge (compression and tension) 1284.3.1 Design Considerations 1294.3.2 Design Data 1294.3.3 Loadings: Characteristic Vertical Dead and Live Loads 1304.3.4 Forces in Members 1364.3.5 Design of Section of Members Based on EC 3: Part 1–1 [4.3] 140

4.4 Analysis and Design of Trestle (Compression and Tension) 1424.4.1 Design Considerations 1424.4.2 Design Data 142

Page 8: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE

Contents vii

4.4.3 Loadings 1434.4.4 Analysis of Forces in Members 1464.4.5 Analysis and Design of Portal Frame at 32.2 m Level 154

Indian Standard Code of Practice IS 800:2007 1614.5 Design of Section of Members 161

4.5.1 Vertical Truss 1614.6 Analysis and Design of Trestle (Members Subjected to Compression

and Tension) 1644.6.1 Design Considerations 1644.6.2 Design Data 1644.6.3 Loadings 1644.6.4 Analysis of Forces in Members 1664.6.5 Analysis and Design of Portal Frame at 32.2 m Level 172

References 178

5 A Turbo-generator Building 179–309

5.1 Brief Description 1795.2 Design Philosophy and Practice 181

5.2.1 Functional Aspects of Structure 1815.2.2 Alternative Structural Arrangement and Choice of Spacing of Frames 1825.2.3 Alternative Choice of Open or Covered Structure 1825.2.4 Selection of Construction Materials 1825.2.5 Choice of Shop and Site Connection in Steel Structure 1835.2.6 Buildability 1845.2.7 Sequence and Method of Erection of Steel Structures 184

5.3 Analysis of Structural Frames 1845.3.1 Design Concept 1845.3.2 Analysis of Structure 1855.3.3 Procedures of Analysis 1855.3.4 Preparing Structural Model 1855.3.5 Loadings 1865.3.6 Analysis of Structural Portal Frames 195

5.4 Analyses of Main Portal Frame of Turbine Hall 2045.4.1 Procedures in Analyses of Various Loadings 204

5.5 Design of Structural Members 2135.5.1 Codes to be Followed and Steel to be Adopted 2135.5.2 Main Portal Frame 2135.5.3 Effective Characteristic Maximum Design Values of Moments and

Thrust in Members at End of Splay 2135.5.4 Design Load Combinations (ULS Method) for Column at End of Splay 2165.5.5 Design of Section of Column (Based on EC 3) 2165.5.6 Design of Section of Roof Beam at End of Splay 2225.5.7 Design of Section of Members of Lean-to Roof Frame 222

5.6 Design of Floor Beams in Annexed Lean-to Roof Building 2235.6.1 Design Considerations 2235.6.2 Loadings 223

Page 9: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE

viii Contents

5.6.3 Characteristic Moments 2245.6.4 Maximum Ultimate Design Moments 2245.6.5 Maximum Ultimate Design Shear at End 2245.6.6 Design of Section 2245.6.7 To Check Deflection 226

5.7 Weld and Bolt Connections 2265.7.1 Design of Weld Connections between Column and Roof Beam of

Main Portal Frame 2275.7.2 Design of Fillet Weld Connection between Column and Bracket

(Gantry Girder Support) 2305.7.3 Design of Bolted Connections at Construction Joint in Roof Beam 232

5.8 Design of Thickness and Size of Base Plate of Column 2365.8.1 Design Considerations 2365.8.2 Thickness of Base Plate 2365.8.3 Size of Base Plate 237

5.9 Design of Gantry Girder 2385.9.1 Design Considerations 2385.9.2 Loadings 2385.9.3 Design of Section 238

5.10 Design of Purlins and Side Sheeting Rails Method of Design 2425.11 Side Sheeting Rails (Members Subjected to Bi-axial Bending) 2505.12 Design of Gable End Columns 252

5.12.1 Design Considerations 2525.12.2 Loadings 2525.12.3 Characteristic Moments and Reactions 2525.12.4 Design of Section 253

5.13 Vertical Bracing System along Column Line B 2605.13.1 Design Considerations 2605.13.2 Loadings 2615.13.3 To Calculate the Shear at Various Levels 2615.13.4 To Calculate Ultimate Design Shear 2625.13.5 To Calculate Forces in Members 2625.13.6 Design of Section of Members 263

5.14 Design of Horizontal Roof Bracing System at Gable Ends 2685.14.1 Design Considerations 2685.14.2 Loadings: Due to Wind 2695.14.3 Force in Diagonals 2695.14.4 Design of Diagonal Members 270

Indian Standard Code of Practice IS 800:2007 2715.15 Design of Structural Members 271

5.15.1 Codes to be Followed and Grade of Steel to be Adopted 2715.15.2 Main Frame 2715.15.3 Effective Characteristic Maximum Design Values of Moments and

Thrusts in Members at End of Splay 2715.15.4 Design Load Combinations (ULS Method) for Column at End of Splay 2745.15.5 Design of Section of Column 2745.15.6 Design of Section of Roof Beam at End of Splay 2805.15.7 Design of Section of Members of Lean to Roof Frame 280

Page 10: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE

Contents ix

5.16 Design of Floor Beams in Annexed Lean to Roof Building 2815.16.1 Design Considerations 2815.16.2 Characteristic Moments 2815.16.3 Maximum Ultimate Design Moments 2815.16.4 Maximum Ultimate Design Shear 2815.16.5 Design of Section 2825.16.6 To Check Deflection 284

5.17 Weld and Bolt Connections 2845.17.1 Design of Weld Connections between Column and

Roof Beam of Main Portal Frame 2845.17.2 Design of Fillet Weld Connection between Column and Bracket (Gantry Girder) 2875.17.3 Design of Bolted Connections at Construction Joint in Roof Beam 288

5.18 Design of Thickness and Size of Base Plate of Column 2925.18.1 Design Considerations 2925.18.2 Thickness and Size of Base Plate 293

5.19 Design of Gantry Girder 2935.19.1 Design Considerations 2935.19.2 Loadings 2935.19.3 Design of Section 294

5.20 Design of Purlins and Side Sheeting Rails 2995.20.1 Method of Design 299

5.21 Side Sheeting Rails (Member Subjected to Biaxial Bending) 306References 309

Annexure A: Tables and Curves Based on EC3:Part 1-1 311–313

Annexure B: Indian Standard Code of Practice IS 800:2007— General Construction in Steel 314–323

Index 325–327

Page 11: Analysis and Design · 2016-06-13 · Analysis and Design Practice of Steel Structures SECOND EDITION PHI Learning Private Limited Delhi-110092 2014 KARUNA MOY GHOSH CEng, FIStructE

Analysis And Design Practice Of SteelStructures

Publisher : PHI Learning ISBN : 9788120349377 Author : GHOSH, KARUNAMOY

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