CSA O118 2-2008 Eastern white cedar shingles (Second Edition).pdf

1、O118.2-08(reaffirmed 2013)Eastern white cedar shinglesLegal Notice for StandardsCanadian 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 view

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17、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.Standards Update ServiceO118.2-08February 2008Title: Eastern white cedar shinglesPagination: 36 pages (viii preliminary and 28 text), each date

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19、233.Visit CSA Groups policy on privacy at csagroup.org/legal to find out how we protect your personal information.Published in February 2008 by Canadian Standards AssociationA not-for-profit private sector organization5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61-800-463-6727 4

20、16-747-4044Visit our Online Store at www.ShopCSA.caO118.2-08Eastern white cedar shinglesCSA StandardISBN 978-1-55436-518-0Technical Editor: Dwayne Torrey Canadian Standards Association 2008All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior per

21、mission of the publisher.To purchase CSA Standards and related publications, visit CSAs Online Store at www.ShopCSA.ca or call toll-free 1-800-463-6727 or 416-747-4044.100%The Canadian Standards Association (CSA) prints its publications on Rolland Enviro100, which contains 100% recycled post-consume

22、r fibre, is EcoLogo and Processed Chlorine Free certified, and was manufactured using biogas energy.February 2008 iiiContents Canadian Standards Association Eastern white cedar shinglesTechnical Committee on Wood Shingles and Shakes vSubcommittee on Eastern White Cedar Shingles viiPreface viii1Scope

23、 12 Reference publications 13 Definitions 24 General requirements 55 Grade A (blue label) shingles 55.1 Grading 55.2 Diagonal grain 55.3 Heartwood and sapwood 55.4 Decay 55.5 Edges 55.6 Length 55.7 Thickness 65.8 Width 65.9 Torn grain 65.10 Waves 65.11 Knots and holes 66 Grade B (red label) shingles

24、 66.1 Grading 66.2 Diagonal grain 66.3 Heartwood and sapwood 66.4 Decay 66.5 Edges 66.6 Length 76.7 Thickness 76.8 Width 76.9 Torn grain 76.10 Waves 76.11 Checks 76.12 Ring shake 76.13 Wane 76.14 Knots and holes 76.14.1 Intergrown and sound knots 76.14.2 Dead, encased, loose, and unsound knots and h

25、oles 76.14.3 Pitch (resin) 87 Grade BW (brown label) shingles 88 Grade C (black label) shingles 88.1 Diagonal grain 88.2 Heartwood and sapwood 8O118.2-08 Canadian Standards Associationiv February 20088.3 Decay 88.4 Edges 88.5 Length 88.6 Thickness 88.7 Width 98.8 Torn grain 98.9 Waves 98.10 Checks 9

26、8.11 Wane 98.12 Knots and holes 98.13 Pitch (resin) 99 Grade D (green label) shingles 99.1 Grading 99.2 Length 109.3 Width 109.4 Edges 109.5 Thickness 1010 Rebutted-rejointed shingles 1010.1 Grading 1010.2 Edges and butt 1010.3 Length 1010.4 Width 1010.5 Thickness 1011 Specialty products 1112 Packag

27、ing and coverage 1112.1 Bundle thickness 1112.2 Running millimetres 1112.3 Coverage 1113 Labelling 1113.1 Information on label 1113.2 Label colours 1113.3 Special circumstances 1114 Quality control 1215 Preservative treatment 1216 Fire retardant treatment 12AnnexesA (informative) Conformity assessme

28、nt program 15B (informative) Use of shingles 18C (informative) Fasteners 23D (informative) Pressure preservative treatment 25E (informative) Fire retardant treatment quality control 26Figures1 Cedar shingle terminology 132 Sample label 14 Canadian Standards Association Eastern white cedar shinglesFe

29、bruary 2008 vTechnical Committee on Wood Shingles and ShakesF. Nabhan National Research Council Canada,Ottawa, OntarioChairG. Tardif Maibec Inc.,Qubec, QubecVice-Chair L. Badke Intertek Testing Services NA Ltd.,Coquitlam, British ColumbiaAssociateM. Canton Maritime Lumber Bureau,Amherst, Nova Scotia

30、W. Clayton Thorough-Fair Building Consultants Limited,Surrey, British ColumbiaR. Engh BC Shake (b) provide an explanation of circumstances surrounding the actual field condition; and(c) be phrased where possible to permit a specific “yes” or “no” answer.Committee interpretations are processed in acc

31、ordance with the CSA Directives and guidelines governing standardization and are published in CSAs periodical Info Update, which is available on the CSA Web site at www.csa.ca. Canadian Standards Association Eastern white cedar shinglesFebruary 2008 1O118.2-08Eastern white cedar shingles1Scope1.1Thi

32、s Standard applies to shingles manufactured from eastern white cedar (Thuja occidentalis L.). It specifies minimum grading, manufacturing, packaging, labelling, and conformity assessment requirements.Note: See Annex A for a suggested conformity assessment program for use by third-party inspection an

33、d certification agencies and Annex B for recommendations on the use of shingles (including rebutted-rejointed shingles).1.2The sizes specified in this Standard are for shingles before drying unless otherwise indicated.1.3This Standard does not apply to shingles that have been remanufactured as shims

34、.1.4This Standard is a manufacturing Standard and does not apply to installed shingles.1.5Where this Standard refers to “shingles”, the terminology is also intended to include rebutted-rejointed shingles unless the context indicates otherwise.1.6In CSA Standards, “shall” is used to express a require

35、ment, 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; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is us

36、ed to express possibility or capability. 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 f

37、igure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.1.7The values given in SI (metric) units are the standard. The values given in parentheses are for information only.2 Reference publicationsThis Standard

38、refers to the following publications, and where such reference is made, it shall be to the edition listed below, including all amendments published thereto.CSA (Canadian Standards Association)CSA O80 Series (in preparation)Wood preservationO118.2-08 Canadian Standards Association2 February 2008ASTM

39、International (American Society for Testing and Materials)A 153/A 153M-05Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel HardwareCGSB (Canadian General Standards Board)CAN/CGSB 85.10-99Protective Coatings for MetalsNRCC (National Research Council Canada)National Building Code of

40、Canada, 2005ULC (Underwriters Laboratories of Canada) CAN/ULC-S107-03Methods of Fire Tests of Roof CoveringsOther publicationScheffer, T.C. 1971. A climate index for estimating potential for decay in wood structures above ground. Forest Products Journal, 21:2531.3 DefinitionsThe following definition

41、s apply in this Standard:Bark all of the tissues, including the cambium, that form the exterior covering of the xylem of a tree.Bark pocket an opening between annual growth rings that contains bark. Note: Bark pockets appear as dark streaks on radial surfaces and as rounded areas on tangential surfa

42、ces.Best face the side of a shingle that is graded and contains the fewest defects. The best face is the face intended for exposure. Bundle a unit of packaging comprising sufficient material of the same grade and length to cover a specified area at recommended exposures.Butt the thicker end of a shi

43、ngle (see Figure 1).Characteristics distinguishing features that determine the quality of a piece by their extent, number, and character.Check a lengthwise separation of wood (see Figure 1).Clear line an imaginary horizontal line separating clear wood from defective wood (see Figure 1).Clear zone th

44、e defect-free portion of a shingle beginning at the clear line and ending at the butt, taking into account defects on both the best face and the reverse face (see Figure 1).Course a horizontal row forming one of a series of rows on a roof or wall or in packed bundles.Double-coursing an installation

45、technique used for roof and wall coverings in which one layer is superimposed completely over another layer of shingles using offset joints.Single-coursing an installation technique used for roof and wall coverings in which each layer covers the preceding layer, using offset joints, in such a way th

46、at the butts of the upper layer are located at the exposure line of the lower layer. Note: For roofs, this arrangement is called a “two-ply roof”.Starter course the first row of roof shingles at the eaves.Note: The starter course may comprise two or three layers. Canadian Standards Association Easte

47、rn white cedar shinglesFebruary 2008 3Crimp a breaking down or collapse of wood cells during the drying of wood that results in a caved-in or corrugated appearance.Decay (rot) deterioration of wood caused by fungi, resulting in softening, loss of strength and weight, and often changes in texture and

48、 colour.Defect an abnormality or irregularity that reduces the commercial value of wood by decreasing its strength or adversely affecting its working or finishing qualities or appearance.Edges the long sides of a shingle (see Figure 1).Exposure area the portion of a shingle exposed to the weather, i

49、.e., the portion running from the butt to the exposure line.Exposure line an imaginary line drawn across a shingle at a distance above the butt that demarcates the exposure area.Feather tip a condition of manufacture found on the thin end of some shingles in which the saw or froe has exited the wood prematurely, producing a thin, feather-like tip that is uneven or is missing corners (see Figure 1).Grain the direction, size, arrangement, appearance, or quality of the fibres in wood.Cross-grain a pattern in whic