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CSA S349:20 Certification requirements for manufacturers of metal-plate-connected wood trusses Design of concrete structures
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CSA S349:20
August 2020
Title: Certification requirements for manufacturers of metal-plate-connected wood trusses
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CSA S349:20
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ICS 91.080.20
ISBN 978-1-4883-3017-9
© 2020 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.
CSA S349:20
Certification requirements for manufacturers of metal-plate-
connected wood trusses
Technical Committee on Engineering Design in Wood 3
Subcommittee on Design Principles 6
Working Group for Metal-Plate-Connected Wood Trusses 8
Preface 9
Scope 10
Reference publications 10
Definitions 11
Certification 11
General 11
Application 11
Audit 11
Withdrawal of certification and reinstatement 12
In-plant qualification program 12
Plant quality assurance manual 12
Manufacturing tolerances 12
In-plant inspections 12
5.3.1 | Frequency and quantity of | internal in-plant inspections | 12 |
5.3.2 | Non-conforming trusses | 13 | |
5.4 | Documentation 13 |
Truss design drawings 13
Design procedures 13
Minimum information on truss design drawings 13
Materials 13
Lumber 13
General 13
Fingerjoined lumber stamped “DRY USE ONLY” 13
Metal connector plates 13
Handling and storage 14
Lumber and plates 14
Handling of fingerjoined lumber 14
Damage during fabrication 14
Finished trusses 14
Truss submittal package 14
Repair and repressing 14
August 2020 © 2020 Canadian Standards Association 1
CSA S349:20
Certification requirements for manufacturers of metal-plate-
connected wood trusses
Repair specifications 14
Lumber condition due to plate removal 14
Lumber with tooth holes 14
Damaged lumber 14
Repressing 14
Truss marking 15
Plant certification marking 15
Special marking 15
Annex A (informative) — Sample audit tool 16
August 2020 © 2020 Canadian Standards Association 2
CSA S349:20
Certification requirements for manufacturers of metal-plate-
connected wood trusses
This is the first edition of CSA S349, Certification requirements for manufacturers of metal-plate- connected wood trusses.
This Standard was prepared by the Working Group for Metal-Plate-Connected Wood Trusses, under the jurisdiction of the Subcommittee on Design Principles and the Technical Committee on Engineering Design in Wood, and the Strategic Steering Committee on Standards for Construction and Civil Infrastructure, and has been formally approved by the Technical Committee.
Notes:
Use of the singular does not exclude the plural (and vice versa) when the sense allows.
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August 2020 © 2020 Canadian Standards Association 9
CSA S349:20
Certification requirements for manufacturers of metal-plate-
connected wood trusses
CSA S349:20
Scope
1.1
This Standard specifies the minimum certification requirements for facilities engaged in the manufacture of metal-plate-connected wood trusses designed in accordance with CSA O86 and TPIC in order to conform with industry standards.
1.2
In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard.
Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.
Notes to tables and figures are considered part of the table or figure and may be written as requirements.
Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
1.3
The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.
Reference publications
This Standard refers to the following publications, and where such reference is made, it shall be to the edition listed below.
CSA Group
O86:19
Engineering design in wood
Canadian Wood Truss Association (CWTA)
Truss Fabricator Guidelines on the Use of Fingerjoined Lumber in Metal Plate Connected Trusses (2012)
August 2020 © 2020 Canadian Standards Association 10