CSA G30.18:21

National Standard of Canada

Carbon steel bars for concrete reinforcement

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  CSA G30.18:21

  October 2021

  
  

  Title: Carbon steel bars for concrete reinforcement

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National Standard of Canada

CSA G30.18:21

Carbon steel bars for concrete reinforcement

®A trademark of the Canadian Standards Association, operating as “CSA Group”

Published in October 2021 by CSA Group A not-for-profit private sector organization

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ICS 77.140.15; 77.140.50

ISBN 978-1-4883-3916-5

© 2021 Canadian Standards Association

All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher.

Contents

Technical Committee on Reinforcing Materials for Concrete 3

Preface 5

0 Introduction 6

1. Scope 6

   
   

2. Reference publications 7

   
   

3. Definitions 8

   
   

4. General requirements 8

   1. Deformed bars 8

   2. Plain round bars 8

      
      

5. Ordering information 9

   1. Mandatory information 9

   2. Supplemental information 9

      
      

6. Process 9

   
   

7. Chemical composition 9

   1. General 9

   2. Heat analysis 10

   3. Carbon equivalent for Type W grades 10

   4. Product analysis of finished bars 10

      
      

8. Deformations 10

   1. General 10

   2. Measurement of deformations 11

      
      

9. Tensile and bend test procedures 11

   1. Tensile test 11

   2. Bend test 12

   3. Number of tests 13

      
      

10. Tensile test results 13

    1. General 13

    2. Bars supplied in coils 13

       
       

11. Bend test results 13

    
    

12. Retests 14

    
    

13. Permissible variation in mass 14

14. Finish 15

    
    

15. Bar marking system 15

    
    

16. Identification and traceability 15

    
    

17. Inspection 16

    
    

18. Mill test reports 16

Annex A (informative) — Determination of total elongation at maximum force (Agt) 20 Annex B (informative) — Preferred chemical composition for hot-dip galvanizing 22 Annex C (informative) — Basic manufacturing techniques 23

Technical Committee on Reinforcing Materials for Concrete

R. Dozzi Canadian BBR Inc., Scarborough, Ontario, Canada Category: User Interest

Chair

J. Henke AltaSteel Inc.,

Edmonton, Alberta, Canada

Category: Producer Interest

Vice-Chair

A. Bernard ArcelorMittal Produits Longs Canada, Contrecoeur, Quebec, Canada Category: Producer Interest

1. Bourdon Mannheim, Ontario, Canada Non-voting

   
   

2. Buzimkic Rebar Enterprises Inc., Oakville, Ontario, Canada Category: User Interest

S. A. Costa Mateenbar Inc.,

Markham, Ontario, Canada

Non-voting

M. Desmarais ArcelorMittal Long Products Canada, Contrecoeur, Quebec, Canada

Non-voting

S. G. Dietrich AGF Rebar Inc.,

Kitchener, Ontario, Canada

Non-voting

P. Farley AGF Group Inc.,

Longueuil, Québec, Canada

Category: User Interest

1. Guenther Max Aicher North America Ltd., Hamilton, Ontario, Canada Category: Producer Interest

   
   

2. P. Gustafson Winthrop Harbor, Illinois, USA

Category: General Interest

C. M. Hansson University of Waterloo, Waterloo, Ontario, Canada Category: General Interest

R. Hubbard Reinforcing Steel Institute of Canada, Scarborough, Ontario, Canada

Non-voting

A. Lubell Read Jones Christoffersen Limited, Vancouver, British Columbia, Canada Category: General Interest

E. Nissen Nucor Steel Seattle Inc., Seattle, Washington, USA

Non-voting

1. Nunes Gerdau,

   Whitby, Ontario, Canada

   Category: Producer Interest

   
   

2. Perlus Ivaco Rolling Mills, L’Orignal, Ontario, Canada

Non-voting

J. Vanier Harris Rebar,

Rockview County, Alberta, Canada

Category: User Interest

B. Wolman Chalybes Consulting Inc., Hampstead, Québec, Canada Category: General Interest

B. Zurbrigg AltaSteel Inc.,

Edmonton, Alberta, Canada

Non-voting

A. Kwong CSA Group,

Toronto, Ontario, Canada

Project Manager

Preface

This is the third edition of CSA G30.18, Carbon steel bars for concrete reinforcement. It supersedes the previous editions, published in 2009 and 1992.

CSA acknowledges that the development of this Standard was made possible, in part, by the financial support of the Reinforcing Steel Institute of Canada.

This Standard was prepared by the Technical Committee on Reinforcing Materials for Concrete, under the jurisdiction of the Strategic Steering Committee on Concrete and Related Products, and has been formally approved by the Technical Committee.

This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Notes:

1. Use of the singular does not exclude the plural (and vice versa) when the sense allows.

2. Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

3. This Standard was developed by consensus, which is defined by CSA Policy governing standardization — Code of good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this Standard.

4. To submit a request for interpretation of this Standard, please send the following information to inquiries@csagroup.org and include “Request for interpretation” in the subject line:

   1. define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

   2. provide an explanation of circumstances surrounding the actual field condition; and

   3. where possible, phrase the request in such a way that a specific “yes” or “no” answer will address the issue.

      Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are available on the Current Standards Activities page at standardsactivities.csa.ca.

5. This Standard is subject to review within five years from the date of publication. Suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to inquiries@csagroup.org and include “Proposal for change” in the subject line:

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   4. rationale for the change.