Design Guide on Use of Structural Steel

1 The education and research arm of the Building and Construction AuthorityPrinted on Recycled Paper200 Braddell Road Singapore 579700 Tel: +65 6248 9999 Fax: +65 6258 0558 Website: : 978-981-05-9754-2 The education and research arm of the Building and Construction Authority BC 1: 2008 Design Guide on Use of AlternativeSteelMaterialsto BS 5950a touche Design production @ 6743 5450 BCA Sustainable Construction Series 3 The education and research arm of the Building and Construction AuthorityBC 1: 2008 Design Guide on Use of AlternativeSteel Materialsto BS 5950 BCA Sustainable Construction Series 3 02-2008 ISBN 978-981-05-9754-2 Copyright @ 2008 Building and Construction Authority, rights reserved.

2 This document or any part thereof may not be reproduced for any reason whatsoever in any form or means whatsoever and howsoever without the prior written consent and approval of the Building and Construction every effort has been made to ensure the accuracy of the information contained in this publication, the Building and Construction Authority, its employees or agents shall not be responsible for any mistake or inaccuracy that may be contained herein and all such liability and responsibility are expressly disclaimed by these said : 2008 PrefaceThis Design Guide serves as Singapore s national code of practice for the use of alternative Steel materials in Design to the British Standard BS 5950 Structural use of steelwork in building , including those manufactured to British Standards.

3 Steel materials not covered in BS 5950 by default shall be allowed with or without restrictions if they are in compliance with the provisions of this Design objective of this Design Guide is to ensure that only adequate (in terms of material performance) and reliable (in terms of quality assurance) Steel materials, regardless of material standards to which the materials are manufactured to, are used in the Design of Structural steelworks to ensure public Design Guide only gives provisions for Structural Design based on BS 5950, and therefore only serves as guidance at the Design stage. It has been assumed in the drafting of this Design Guide that the execution of its provisions is entrusted to appropriately qualified persons, in compliance with appropriate execution standards to control materials, fabrication and erection of a code of practice, this Design Guide takes the form of guidance and recommendations.

4 It should not be quoted as if it was a specification and particular care should be taken to ensure that claims of compliance are not misleading. Reference for additional Design recommendations other than those given in this Design Guide shall be made to various parts of BS Design Guide does not purport to include all the necessary provisions of a contract. Users of this Design Guide are responsible for their correct with this Design Guide does not of itself confer immunity from legal : 2008 PREFACE ICONTENTS IIILIST OF TABLES IXLIST OF FIGURES XILIST OF SYMBOLS

5 XIISECTION 1. INTRODUCTION Scope Acronyms Acronyms for standards and organizations Acronyms for technical terms Terms and definitions

6 Alternative Steel materials Classification of alternative Steel materials Material performance requirements Quality assurance requirements Certified Steel materials Manufacturer Stockist Trader Purchaser Product

7 Certification agency Technical equations Carbon equivalent value Proportional gauge length 4 section 2. MATERIAL PERFORMANCE REQUIREMENTS Steel plates Manufacturing process Mechanical properties Chemical composition

8 Dimensional and mass tolerances Hot rolled sections Manufacturing process Mechanical properties Chemical composition Dimensional and mass tolerances 9 ContentsivBC1.

9 hollow sections 9 Manufacturing process Mechanical properties Chemical composition Dimensional and mass tolerances Steel for cold forming Manufacturing process Mechanical properties Chemical composition Dimensional and mass tolerances Non-preloaded bolting

10 Assemblies Manufacturing process Mechanical properties Chemical composition Dimensional tol