A123.21-10

Standard test method for the dynamic wind uplift resistance of membrane-roofing systems

Legal Notice for Standards

Canadian Standards Association (CSA) standards are developed through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers representing varied viewpoints and interests to achieve consensus and develop a standard. Although CSA administers the process and establishes rules to promote fairness in achieving consensus, it does not independently test, evaluate, or verify the content of standards.

Disclaimer and exclusion of liability

This document is provided without any representations, warranties, or conditions of any kind, express or implied, including, without limitation, implied warranties or conditions concerning this document’s fitness for a particular purpose or use, its merchantability, or its non-infringement of any third party’s intellectual property rights. CSA does not warrant the accuracy, completeness, or currency of any of the information published in this document. CSA makes no representations or warranties regarding this document’s compliance with any applicable statute, rule, or regulation.

IN NO EVENT SHALL CSA, ITS VOLUNTEERS, MEMBERS, SUBSIDIARIES, OR AFFILIATED COMPANIES, OR THEIR EMPLOYEES, DIRECTORS, OR OFFICERS, BE LIABLE FOR ANY DIRECT, INDIRECT, OR INCIDENTAL DAMAGES, INJURY, LOSS, COSTS, OR EXPENSES, HOWSOEVER CAUSED, INCLUDING BUT NOT LIMITED TO SPECIAL OR CONSEQUENTIAL DAMAGES, LOST REVENUE, BUSINESS INTERRUPTION, LOST OR DAMAGED DATA, OR ANY OTHER COMMERCIAL OR ECONOMIC LOSS, WHETHER BASED IN CONTRACT, TORT (INCLUDING NEGLIGENCE), OR ANY OTHER THEORY OF LIABILITY, ARISING OUT OF OR RESULTING FROM ACCESS TO OR POSSESSION OR USE OF THIS DOCUMENT, EVEN IF CSA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, INJURY, LOSS, COSTS, OR EXPENSES.

In publishing and making this document available, CSA is not undertaking to render professional or other services for or on behalf of any person or entity or to perform any duty owed by any person or entity to another person or entity. The information in this document is directed to those who have the appropriate degree of experience to use and apply its contents, and CSA accepts no responsibility whatsoever arising in any way from any and all use of or reliance on the information contained in this document.

CSA is a private not-for-profit company that publishes voluntary standards and related documents. CSA has no power, nor does it undertake, to enforce compliance with the contents of the standards or other documents it publishes.

Intellectual property rights and ownership

As between CSA and the users of this document (whether it be in printed or electronic form), CSA is the owner, or the authorized licensee, of all works contained herein that are protected by copyright, all trade-marks (except as otherwise noted to the contrary), and all inventions and trade secrets that may be contained in this document, whether or not such inventions and trade secrets are protected by patents and applications for patents. Without limitation, the unauthorized use, modification, copying, or disclosure of this document may violate laws that protect CSA’s and/or others’ intellectual property and may give rise to a right in CSA and/or others to seek legal redress for such use, modification, copying, or disclosure. To the extent permitted by licence or by law, CSA reserves all intellectual property rights in this document.

Patent rights

Attention is drawn to the possibility that some of the elements of this standard may be the subject of patent rights. CSA shall not be held responsible for identifying any or all such patent rights. Users of this standard are expressly advised that determination of the validity of any such patent rights is entirely their own responsibility.

Authorized use of this document

This document is being provided by CSA for informational and non-commercial use only. The user of this document is authorized to do only the following:

.

If this document is in electronic form:

.

.

load this document onto a computer for the sole purpose of reviewing it; search and browse this document; and

print this document if it is in PDF format.

Limited copies of this document in print or paper form may be distributed only to persons who are authorized by CSA to have such copies, and only if this Legal Notice appears on each such copy.

.

In addition, users may not and may not permit others to

.

.

alter this document in any way or remove this Legal Notice from the attached standard; sell this document without authorization from CSA; or

make an electronic copy of this document.

If you do not agree with any of the terms and conditions contained in this Legal Notice, you may not load or use this document or make any copies of the contents hereof, and if you do make such copies, you are required to destroy them immediately. Use of this document constitutes your acceptance of the terms and conditions of this Legal Notice.

CSA Standards Update Service

A123.21-10 May 2010

Title: Standard test method for the dynamic wind uplift resistance of membrane-roofing systems

Pagination: 33 pages (vi preliminary and 27 text), each dated May 2010

To register for e-mail notification about any updates to this publication

• go to www.ShopCSA.ca

• click on E-mail Services under MY ACCOUNT

• click on CSA Standards Update Service

The List ID that you will need to register for updates to this publication is 2420661. If you require assistance, please e-mail techsupport@csa.ca or call 416-747-2233.

Visit CSA’s policy on privacy at www.csagroup.org/legal to find out how we protect your personal information.

CSA Standard

A123.21-10

Standard test method for the dynamic wind uplift resistance of

membrane-roofing systems

Published in May 2010 by Canadian Standards Association A not-for-profit private sector organization

5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 • 416-747-4044

Visit our Online Store at www.ShopCSA.ca

100%

The Canadian Standards Association (CSA) prints its publications on Rolland Enviro100, which contains 100% recycled post-consumer fibre, is EcoLogo and Processed Chlorine Free certified, and was manufactured using biogas energy.

To purchase CSA Standards and related publications, visit CSA’s Online Store at www.ShopCSA.ca or call toll-free 1-800-463-6727 or 416-747-4044.

ISBN 978-1-55491-409-8

Technical Editor: Vanessa Mitchell

© Canadian Standards Association — 2010

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

© Canadian Standards Association

Contents

Standard test method for the dynamic wind uplift resistance of membrane-roofing systems

Technical Committee on Bituminous Roofing Materials iv

Preface vi

1. Scope 1

   
   

2. Reference publications 2

   
   

3. Definitions 2

   
   

4. Significance of test 3

   
   

5. Test precautions 3

   
   

6. Test apparatus 3

   
   

7. Test specimen and preparation 4

   1. Installation 4

   2. Application of components 4

   3. Component attachment 4

   4. Seams 5

   5. Preparation 5

   6. Conditioning time 5

   7. Static air leakage test 5

      
      

8. Dynamic load sequence 5

   1. Calculation of test pressure 5

   2. Calculation of base pressure 5

   3. Requirement of gust cycle 5

   4. Test procedure 5

      
      

9. Termination of the test 6

   
   

10. Test report 6

Annexes

A (informative) — List of AARS/SIGDERS Consortium participants 11

B (informative) — Development of dynamic load cycles 13

C (informative) — Typical mechanically attached membrane roofing systems — Method 1 15

D (informative) — Typical adhesive applied membrane roofing systems — Method 2 19

E (informative) — Sample test report 22

F (informative) — Bibliography 27

Figures

1. — Test apparatus and test specimen arrangement 7

2. — Table size correction factors for Method 1 8

3. — Dynamic wind load cycles for Method 1/Method 2 9

4. — Time requirement of a gust 10

May 2010 iii

A123.21-10 © Canadian Standards Association

Technical Committee on Bituminous Roofing Materials

1. Lodge IKO Industries Ltd., Brampton, Ontario

   Chair

   P.J. Julian Building Products of Canada Corp., LaSalle, Québec

   Vice-Chair

2. Baskaran National Research Council Canada, Ottawa, Ontario

M. Bryson Bryson Company, Independence, Missouri, USA

W. Clark IKO Industries Ltd., Brampton, Ontario

Associate

J. Côté Soprema Inc.,

Drummondville, Québec

Associate

T. Davis Everest Supply Inc., Mississauga, Ontario

S. Dinwiddie Pabco,

Wilmore, Kentucky, USA

D. Fishburn Fishburn Building Sciences Group Inc., Hornby, Ontario

C.R. Foreshew Tarion Warranty Corporation, Toronto, Ontario

M.S. Graham National Roofing Contractors Association (NRCA), Rosemont, Illinois, USA

D. Higgs Owens Corning, Toledo, Ohio, USA

Associate

R. Kaethler Trimline Building Products, Surrey, British Columbia

Associate

P. Kalinger Canadian Roofing Contractors’ Association, Ottawa, Ontario

R.A. McNulty Global Laboratory and Research Corporation, Hamilton, Ontario

1. Nabhan National Research Council Canada, Ottawa, Ontario

   
   

2. Nishio Intertek Testing Services NA Ltd., Coquitlam, British Columbia

Associate

iv May 2010

© Canadian Standards Association

Standard test method for the dynamic wind uplift resistance of membrane-roofing systems

A.R. Phillips TAMKO Building Products, Joplin, Missouri, USA

G. Riahi Hal Industries Inc., Surrey, British Columbia

R.A. Snyder CertainTeed Corporation, Blue Bell, Pennsylvania, USA

A. Steen Ontario Ministry of Municipal Affairs and Housing, Toronto, Ontario

M. Vandenbussche Canadian Asphalt Shingle Manufacturers’ Association,

St. Lazare, Québec

1. Watson Roofing Contractors Association of British Columbia, Langley, British Columbia

   
   

2. Wilson Orillia, Ontario

W. Woodring GAF Materials Corporation,

Wayne, New Jersey, USA

Associate

V.A. Mitchell Canadian Standards Association, Mississauga, Ontario

Project Manager

May 2010 v

A123.21-10 © Canadian Standards Association

Preface

This is the second edition of CSA A123.21, Standard test method for the dynamic wind uplift resistance of membrane-roofing systems. It supersedes the first edition, published in 2004 under the title Standard test method for the dynamic wind uplift resistance of mechanically attached membrane-rooting systems.

A new testing method has been added to this Standard, based on research and testing carried out at the National Research Council’s Institute for Research in Construction (NRC/IRC).

The two methods that are now included in this Standard are as follows:

1. Method 1 — a dynamic test procedure developed by the National Research Council Canada (NRCC) industry-based consortium, initiated in 1994. The consortium is known as the Special Interest Group for Dynamic Evaluation of Roofing Systems (SIGDERS).

2. Method 2 — a dynamic test procedure developed by the National Research Council Canada (NRCC) industry-based consortium, initiated in 2005. The consortium is known as the Adhesive Applied Roofing Systems (AARS).

   These consortiums include manufacturers and trade associations. See Annex A for a list of participants.

   CSA acknowledges that the development of this Standard was made possible, in part, by the financial support of the University of Ottawa.

   This Standard was prepared by the Technical Committee on Bituminous Roofing Materials, under the jurisdiction of the Strategic Steering Committee on Building Products and Systems, and has been formally approved by the Technical Committee.

   
   

   May 2010

   
   

   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 publication 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 publication.

   4. CSA Standards are subject to periodic review, and suggestions for their improvement will be referred to the appropriate committee.

   5. All enquiries regarding this Standard, including requests for interpretation, should be addressed to Canadian Standards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6.

      Requests for interpretation should

      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. be phrased where possible to permit a specific “yes” or “no” answer.

Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are published in CSA’s periodical Info Update, which is available on the CSA Web site at www.csa.ca.

vi May 2010

© Canadian Standards Association

A123.21-10

Standard test method for the dynamic wind uplift resistance of membrane-roofing systems

Standard test method for the

dynamic wind uplift resistance of membrane-roofing systems

1 Scope

1.1

This test method determines the wind uplift resistance of membrane-roofing systems when subjected to dynamic wind load cycles.

The test methods are

1. Method 1: mechanically attached membrane-roofing systems; and

2. Method 2: adhered membrane-roofing systems.

The roofing system consists of a deck and roofing membrane. It includes components such as vapour barriers or retarders, insulation, cover board, etc. It is subjected to a dynamic load sequence that has been developed based on wind pressure records, simulating the effects of wind on membrane-roof assemblies. Note: The roof membrane may be designated as the plane of air tightness.

1.2

Method 1: Testing in accordance with this test method is limited to mechanically attached, reinforced membrane systems having a fastener row separation not greater than 2896 mm (114 in) and fastener in-line spacing not greater than 610 mm (24 in).

Method 2: Testing in accordance with this test method is limited to roof components adhered as a means of resisting wind uplift, without the use of mechanical fasteners or ballast.

1.3

In CSA Standards, “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 (nonmandatory) to define their application.

1.4

The values given in SI (metric) units are the standard. The values given in parentheses are for information only.

May 2010 1