P363 Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes Steel Building Design: Design Data nt e m e e gr A e c n e c Li z bi el e St e h of t s n o diti n o c d n a s m er e t h o t ct t bje The Steel Construction Institute u s s nt i Tata Steel e m u c do The British Constructional Steelwork Association Ltd s hi of t e s U d. e v er s e s r ht g all ri 011ht - 2g arch opyri Mc on 16 erial is d at em CreatThis P363 Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes SCI (The Steel Construction Institute) is the leading, independent provider of technical expertise and disseminator of best practice to the steel construction sector. We work in partnership with clients, members and industry peers to help build businesses and provide competitive advantage through the commercial application of our knowledge. We are committed to offering and promoting sustainable and environmentally responsible solutions. Our service spans the following five areas: Membership Construction Solutions Individual and corporate membership Sustainability Technical Information Product development Courses Research Publications Engineering support Online reference tools Communications Technology Education Websites Codes and standards Communities Design tools Assessment SCI Assessment nt The Steel Construction Institute, Silwood Park, Ascot, Berkshire, SL5 7QN. e m e Telephone: +44 (0) 1344 636525 Fax: +44 (0) 1344 636570Email: [email protected] e gr World Wide Web site: http://www.steel-sci.org A e c n e c Li z bi el e St e h of t s n o diti n o c d n s a The British Constructional Steelwork Association Limited. m er he t The British Constructional Steelwork Association Limited was formed in 1906 and is the national ct to t organisation for the Constructional Steelwork Industry; its Member companies undertake the design, bje fabrication and erection of steelwork for all forms of construction in building and civil engineering. Associate u s Members are those principal companies involved in the supply to all or some Members of components, s nt i materials or products. e m u The principal objectives of the Association are to promote the use of structural steelwork; to assist specifiers c o d and clients; to ensure that the capabilities and activities of the industry are widely understood and to provide s hi members with professional services in technical, commercial, contractual, quality assurance, and health and e of t safety matters. The Association’s aim is to influence the trading environment in which member companies s U have to operate in order to improve their profitability. d. e v er The British Constructional Steelwork Association Ltd., 4 Whitehall Court, London, SW1A 2ES. s e s r Telephone: +44 (020) 7839 8566 Fax: +44 (020) 7976 1634 ht g Email: [email protected] all ri World Wide Web site: http://www.steelconstruction.org 011ht - 2g arch opyri Mc on 16 erial is d at em CreatThis P363 Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes P:\OSA\Osa403\Explanatory notes updated\EC3 BB explanatory notes v.07 - updated for electronic BB (Recovered) dcw 20Dec2010.doc Publication P363 (Explanatory Notes updated, December 2010) Steel Building Design: Design Data In accordance with Eurocodes and the UK National Annexes nt e m ee gr A e c n e c Li z bi el e e St h of t s n o diti on c d n a s m er he t o t ct t e bj u s s nt i e m u oc Jointly published by: d s hi of t e s U d. The Steel Construction Institute The British Constructional Steelwork e v er Association Limited es Silwood Park, Ascot, Berkshire, SL5 7QN s r ht 4 Whitehall Court, London, SW1A 2ES g Telephone: 01344 636525 all ri Fax: 01344 636570 Telephone: 020 7839 8566 2011ght - Fax: 020 7976 1634 arch opyri Mc on 16 erial is ed mat CreatThis P363 Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes P:\OSA\Osa403\Explanatory notes updated\EC3 BB explanatory notes v.07 - updated for electronic BB (Recovered) dcw 20Dec2010.doc © The Steel Construction Institute and The British Constructional Steelwork Association Ltd., 2010 Apart from any fair dealing for the purposes of research or private study or criticism or review, as permitted under the Copyright Designs and Patents Act, 1988, this publication may not be reproduced, stored, or transmitted, in any form or by any means, without the prior permission in writing of the publishers, or in the case of reprographic reproduction only in accordance with the terms of the licences issued by the UK Copyright Licensing Agency, or in accordance with the terms of licences issued by the appropriate Reproduction Rights Organisation outside the UK. Enquiries concerning reproduction outside the terms stated here should be sent to the publishers, at the nt me addresses given on the title page. e e gr A Although care has been taken to ensure, to the best of our knowledge, that all data and information e nc contained herein are accurate to the extent that they relate to either matters of fact or accepted practice or e Lic matters of opinion at the time of publication, The Steel Construction Institute and The British Constructional z bi Steelwork Association Limited assume no responsibility for any errors in or misinterpretations of such data el e and/or information or any loss or damage arising from or related to their use. St e h of t Publications supplied to the Members of SCI and BCSA at a discount are not for resale by them. s n o diti Publication Number: SCI P363 ISBN 978-1-85942-186-4 n o c d n British Library Cataloguing-in-Publication Data. a s m er A catalogue record for this book is available from the British Library. e t h o t ct t e bj u s s nt i e m u c o d s hi of t e s U d. e v er s e s r ht g all ri 011ht - 2g arch opyri Mc on 16 erial is P:\OSA\Osa403\Explanatory notes updated\EC3 BB explanatory notes v.07 - updated for electronic BB (Recovered) dcw ed mat 20Dec2010.doc ii CreatThis P363 Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes P:\OSA\Osa403\Explanatory notes updated\EC3 BB explanatory notes v.07 - updated for electronic BB (Recovered) dcw 20Dec2010.doc FOREWORD This publication presents design data derived in accordance with the following Parts of Eurocode 3 and their National Annexes:  BS EN 1993-1-1:2005: Design of steel structures. Part 1-1: General rules and rules for buildings.  BS EN 1993-1-5:2006: Design of steel structures. Part 1-5: Plated structural elements.  BS EN 1993-1-8:2005: Design of steel structures. Part 1-8: Design of joints.  Where these Parts do not give all the necessary expressions for the evaluation of data, reference is made to other published sources. The resistances in this publication have been calculated using the partial factors for resistance given in the UK National Annexes for the Eurocodes (NA to BS EN 1993-1-1:2005 as published in December 2008, NA to BS EN 1993-1-5:2006 as published in May 2008 and NA to BS EN 1993- 1-8:2005 as published in November 2008). The partial factors are listed in Section 5.1. The other parameters given in the National Annex that have been used when calculating member resistances are given in the relevant section of this publication. The following structural sections are covered in this publication: Universal beams, universal columns, joists, bearing piles, parallel flange channels and structural tees cut from universal beams and universal columns to BS 4-1 nt e m e Universal beams and universal columns produced by Tata Steel* but not included in BS 4-1 e gr A e Asymmetric Slimflor® beams (ASB) produced by Tata Steel* c n e Lic Equal and unequal angles to BS EN 10056-1 z bi el Hot-finished structural hollow sections to BS EN 10210-2 e St he Cold-formed structural hollow sections to BS EN 10219-2 of t ns Section ranges listed cover sections that are readily available at the time of printing. o diti n o The preparation and editorial work for this Edition was carried out by Miss E Nunez Moreno and c d n Mr E Yandzio, both of the SCI, with technical assistance from Mr A S Malik of the SCI and a ms Mr C M King, formerly of the SCI. The project was coordinated by Mr D G Brown, also of the er e t SCI. h o t ct t The work leading to this publication has been jointly funded by Tata Steel*, SCI and BCSA and e ubj their support is gratefully acknowledged. s s ent i A number of minor revisions have been made to the Explanatory Notes, updating those included in m cu the printed paper publication of October 2009. o d s hi of t e s U d. e v er s e s r ht g all ri 011ht - 2g March copyri on 16 erial is * This publication includes references to Corus, which is a former name of Tata Steel in Europe d at em CreatThis iii P363 Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes CONTENTS Page No (White pages) A EXPLANATORY NOTES A-1 1 GENERAL A-1 1.1 Material, section dimensions and tolerances A-1 1.2 Dimensional units A-2 1.3 Property units A-2 1.4 Mass and force units A-2 1.5 Axis convention A-2 2 DIMENSIONS OF SECTIONS A-2 2.1 Masses A-2 2.2 Ratios for local buckling A-2 2.3 Dimensions for detailing A-3 2.3.1 UB sections, UC sections and bearing piles A-3 2.3.2 Joists A-3 2.3.3 Parallel flange channels A-3 3 SECTION PROPERTIES A-3 nt me 3.1 General A-3 e e gr 3.2 Sections other than hollow sections A-3 A e nc 3.2.1 Second moment of area (I) A-3 e c z Li 3.2.2 Radius of gyration (i) A-4 bi el 3.2.3 Elastic section modulus (W ) A-4 Ste el e 3.2.4 Plastic section modulus (W ) A-4 h pl s of t 3.2.5 Buckling parameter (U) and torsional index (X) A-4 n o diti 3.2.6 Warping constant (Iw) and torsional constant (IT) A-5 n o d c 3.2.7 Equivalent slenderness coefficient ( ) and monosymmetry n s a index ( ) A-7 m er 3.3 Hollow sections A-9 e t h o t 3.3.1 Common properties A-9 ect t 3.3.2 Plastic section modulus of hollow sections (W ) A-9 bj pl u nt is s 3.3.3 Torsional constant (IT) A-9 e 3.3.4 Torsional section modulus (W) A-10 m t u c o s d 4 EFFECTIVE SECTION PROPERTIES A-10 hi of t 4.1 General A-10 e Us 4.2 Effective section properties of members subject to compression A-10 d. ve 4.3 Effective section properties of members subject to pure bending A-11 er s e hts r 5 INTRODUCTION TO RESISTANCE TABLES A-12 g all ri 5.1 General A-12 011ht - 5.2 Yield strength A-12 2g arch opyri Mc on 16 erial is d at em CreatThis EC3 BB explanatory notes ENM- v.06.doc iv P363 Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes 6 COMPRESSION TABLES A-13 6.1 Compression members: UB and UC sections A-13 6.2 Compression members: hollow sections A-15 6.3 Compression members: parallel flange channels A-17 6.4 Compression members: single angles A-19 7 TENSION TABLES A-21 7.1 Tension members: Single angles A-21 8 BENDING TABLES A-22 8.1 Bending: UB sections, UC sections, joists and parallel flange channels A-22 8.2 Bending: Hollow sections A-25 8.2.1 Circular and square hollow sections A-25 8.2.2 Rectangular hollow sections A-25 8.2.3 Elliptical hollow sections A-26 9 RESISTANCE TO TRANSVERSE FORCES TABLES (WEB BEARING AND BUCKLING) A-27 9.1 UB sections, UC sections, joists and parallel flange channels A-27 9.2 Square and rectangular hollow sections A-28 10 AXIAL FORCE & BENDING TABLES A-31 ent 10.1 Axial force and bending: UB sections, UC sections, joists and m ee parallel flange channels A-31 gr e A 10.1.1 Cross section resistance check A-31 c n ce 10.1.2 Member buckling check A-34 Li biz 10.2 Axial force and bending: hollow sections A-35 el e St 10.2.1 Cross section resistance check A-35 e h of t 10.2.2 Member buckling check A-37 s n o diti 11 BOLTS AND WELDS A-38 n co 11.1 Bolt resistances A-38 d n s a 11.2 Welds A-41 m er e t 12 SECTION DESIGNATIONS AND STEEL GRADES A-43 h o t ct t 12.1 Open Sections A-43 e ubj 12.2 Hollow Sections A-44 s s ent i 13 REFERENCES A-46 m u c o d s hi of t e s U d. e v er s e s r ht g all ri 011ht - 2g arch opyri Mc on 16 erial is d at em CreatThis EC3 BB explanatory notes ENM- v.06.doc v P363 Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes P:\OSA\Osa403\Explanatory notes updated\EC3 BB explanatory notes v.07 - updated for electronic BB (Recovered) dcw 20Dec2010.doc B.1 TABLES OF DIMENSIONS AND GROSS SECTION PROPERTIES (Yellow pages) Universal beams B-2 Universal columns B-8 Joists B-10 Universal bearing piles B-12 Hot-finished circular hollow sections B-14 Hot-finished square hollow sections B-16 Hot-finished rectangular hollow sections B-19 Hot-finished elliptical hollow sections B-23 Cold-formed circular hollow sections B-24 Cold-formed square hollow sections B-26 Cold-formed rectangular hollow sections B-28 ASB (Asymmetric beams) B-32 Parallel flange channels B-34 Two parallel flange channels laced B-36 Two parallel flange channels back to back B-37 Equal angles B-39 nt Unequal angles B-40 e m e Equal angles back to back B-42 e gr e A Unequal angles long leg back to back B-43 c n ce Structural tees cut from universal beams B-44 Li z bi Structural tees cut from universal columns B-50 el e e St h of t s n o diti n o c d n a s m er e t h o t ct t e bj u s s nt i e m u c o d s hi of t e s U d. e v er s e s r ht g all ri 011ht - 2g arch opyri Mc on 16 erial is d at em CreatThis vi P363 Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes P:\OSA\Osa403\Explanatory notes updated\EC3 BB explanatory notes v.07 - updated for electronic BB (Recovered) dcw 20Dec2010.doc B.2 TABLES OF EFFECTIVE SECTION PROPERTIES (Blue pages) Universal beams subject to compression B-54 Hot-finished square hollow sections subject to compression B-57 Cold-formed square hollow sections subject to compression B-57 Hot-finished rectangular hollow sections subject to compression B-58 Cold-formed rectangular hollow sections subject to compression B-60 Equal angles subject to compression B-61 Unequal angles subject to compression B-62 Hot-finished square hollow sections subject to bending about y-y axis B-65 Cold-formed square hollow sections subject to bending about y-y axis B-66 Hot-finished rectangular hollow sections subject bending about y-y axis B-67 Cold-formed rectangular hollow sections subject bending about y-y axis B-69 nt e m e e gr A e c n e c Li z bi el e St e h of t s n o diti n o c d n a s m er e t h o t ct t e bj u s s nt i e m u c o d s hi of t e s U d. e v er s e s r ht g all ri 011ht - 2g arch opyri Mc on 16 erial is d at em CreatThis vii P363 Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes P:\OSA\Osa403\Explanatory notes updated\EC3 BB explanatory notes v.07 - updated for electronic BB (Recovered) dcw 20Dec2010.doc Steel Grade S275 S355 C,D MEMBER RESISTANCE TABLES (Pink pages) (Green pages) Compression Universal beams C-2 D-2 Universal columns C-11 D-11 Hot-finished circular hollow sections * D-14 Hot-finished square hollow sections * D-16 Hot-finished rectangular hollow sections * D-19 Hot-finished elliptical hollow sections * D-28 Cold-formed circular hollow sections * D-30 Cold-formed square hollow sections * D-32 Cold-formed rectangular hollow sections * D-34 Parallel flange channels - subject to concentric axial C-41 D-41 compression Parallel flange channels - connected through web C-43 D-43 Equal angles C-45 D-45 Unequal angles - Short leg attached C-47 D-47 Unequal angles - Long leg attached C-49 D-49 Tension: nt e Equal angles C-51 D-51 m e e gr Unequal angles - Short leg attached C-54 D-54 A ce Unequal angles - Long leg attached C-57 D-57 n e c Li Bending z bi el Universal beams C-60 D-60 e St e Universal columns C-74 D-74 h s of t Joists C-79 D-79 n o diti Hot-finished circular hollow sections * D-81 n o c Hot-finished square hollow sections * D-83 d n s a Hot-finished rectangular hollow sections * D-86 m e ter Hot-finished elliptical hollow sections * D-90 h o t Cold-formed circular hollow sections * D-91 ct t e Cold-formed square hollow sections * D-93 bj u s s Cold-formed rectangular hollow sections * D-95 nt i me Parallel flange channels C-98 D-98 u c do * Tables for these structural sections in S275 have not been prepared. s hi See notes on pages C-14 and C-81. of t e s U d. e v er s e s r ht g all ri 011ht - 2g arch opyri Mc on 16 erial is d at em CreatThis viii