CGSB 51 32-M77-CAN CGSB-1977 Sheathing Membrane Breather Type《通气覆膜》.pdf

1、CGSB CANICGSB- 51.32-iI77 xs = LB7i.1650 0007bb3 292 CAN2=51.32-M77 NATIONAL NORME STANDARD NATIONALE OF CANADA DU CANADA Sheathing, Membrane, Breather Type CGS Canadian General Standards Board Office des normes nnrales du Canada Copyright Canadian General Standards Board Provided by IHS under licen

2、se with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-This standard has been developed by the CANADIAN GENERAL STANDARDS BOARD (CGSB) for the application stated in the Scope clause. The user of this standard is responsible for judging its suitability for his

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24、for ResaleNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CGSB- 5Le32-fl77 * W 1474650 0007bb5 Ob5 W IMPORTANT NOTICE CGSB Standards are subject to periodical review and New Editions and Amend- ments may be published from time to time. If you wish to receive Amendments

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27、sme - Address1 Adresse City/Viile Prov./State/ tat Cou n try I Pay s Postal/Zip/Code postai Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CGSB- 51.32-I77 * W L874b.50 0007b

28、bb TTL NATIONAL STANDARD OF CANADA CAN2-51.32-M77 SHEATHING, MEMBRANE, BREATHER TYPE A PUBLISHED APRIL 1977 BY CANADIAN GOVERNMENT SPECIFICATIONS BOARD, OTTAWA, ONTARIO KIA OS5 COPYRIGHT - CROWN IN RIGHT OF CANADA - 1977 Copyright Canadian General Standards Board Provided by IHS under license with C

29、GSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CGSB- 51.32-177 ff = 1874650 0007bb7 938 CANADIAN GOVERNMENT SPECIFICATIONS BOARD COMMITTEE ON MOISTURE AND VAPOR CONTROL (Membership at date of approval by the Committee) Aikman, A.J.M. Allan, B.C. Anders

30、on, W. Belair, R.P. Bell, D. Blackmore, M.J. Bomberg, M. Brady, R. Christiansen, T.S. Cooper, D. Cryer, S.K. Currie, J.C. Dubeau, J.F. Gerow, M.H. Haddow, F.C. Hajdur, W. (Chairman) Howard, C.E. Jeffreys, P.A. Koch, E.D. Leonard, R.W. Lord, N.K. McDonald, R.F. McIntosh, I. Mitchell, A. Murfitt, N. R

31、ice, T. Roy, J. St. Amour, H. Shimizu, T.Y. Tasman, J. E. Vins, G. Walsworth, J.A. Watt, I. Weir, W. Wisnoski, W.W. Bowles, A. (Secretary) Alberta Labour Department of National Defence Domtar Construction Materials Ltd. Canadian Gypsum Co. Ltd. Saskatchewan Construction Association Department of Ind

32、ian and Northern Affairs National Research Council W. Ralston & Co. (Canada) Ltd. E.S. &A. Robinson (Canada) Ltd. Consolidated Bathurst Packaging Heating, Refrigerating & Air Conditioning Institute of Department of Public Works, B.C. Department of Supply and Services Canadian Industries Ltd. Domtar

33、Construction Materials Ltd. Gummed Papers Ltd. Canadian Johns-Manville Co. Ltd. Department of Industry, Trade and Commerce Order of Architects of Qubec Union Carbide Canada Ltd. Crown Zellerbach Paper Co. Ltd. Central Mortgage and Housing Corporation Domtar Packaging Ltd. Canadian Johns-Manville Co.

34、 Ltd. Crown Zelierbach Paper Co. Ltd. Department of Transport Centre de recherche industrielle du Qubec Building Products of Canada Ltd. Department of Public Works Pulp & Paper Research Institute of Canada Deerfield Laminations Ltd. Department of Supply and Services St. Regis Paper Alberta Housing C

35、orp. E.B. Eddy Co. Canadian Government Specifications Board Canada Acknowledgement is made for the French translation of this National Standard of Canada by the Translation Bureau of the Department of the Secretary of State and the technical editing of the translation by the Materiel Data Management

36、 Centre of the Department of Supply and Services. Les Normes nationales du Canada sont disponibles en versions franaise et anglaise. Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CG

37、SB CANICGSB- 5L*32-H77 * D 1874650 0007bb8 74 D CAN 2-51.32-M77 CANADIAN GOVERNMENT SPECIFICATIONS BOARD Standard for SHEATHING, MEMBRANE, BREATHER TYPE SCOPE 1.1 under the external finish, as a secondary protective covering against the entry of wind and moisture. They are to provide moisture-resist

38、ant and draught-resistant barriers that do not impede the passage of water vapor and therefore minimize the condensation of such vapor. This standard applies to breather type sheathing membranes intended for use on the outside of heated buildings, APPLICABLE PUBLICATIONS 2.1 The following publicatio

39、ns are applicable to this standard: 2.1.1 American Society for Testing and Materials (ASTM) D 828 Method of Test for Tensile Breaking Strength of Paper and Paperboard E 96 Methods of Test for Measuring Water Vapor Transmission of Materials in Sheet Form 2.2 standard. Reference to the above publicati

40、ons is to the latest issues, unless otherwise specified by the authority applying this TERMINOLOGY 3.1 par. 1.1. It may be coated, impregnated or perforated or a combination of these. Breather Type Sheathing Membrane - A single ply or laminated material intended for the application outlined in G EN

41、ERAL R EQUI R EMENTS 4.1 extent that will cause tearing or other damage on unrolling. The material shall be free from visible defects and shall have a uniform appearance. It shall not stick together to an DETAIL REQUIREMENTS 5.1 Sheet Width -Width of the material shall be as specified (par. 8-11, su

42、bject to a tolerance of -6 mm. 5.2 5.3 3.5 N/mm of width, when tested according to the method described in par. 7.2.2. Pliability - The material shall not crack when bent over a mandrel according to the method described in par. 7.2.1. Tensile Strength - The material shall have an average tensile str

43、ength, in the machine direction, of not less than 5.4 material shall show an average water vapor permeance of not less than 170 ng/Pa-sm2, and not more than 1400 ng/Pa.sm2. To convert metric perms to ng/Pa-s.m2, multiply by 87.2. Water Vapor Permeance - When three uncreased samples are tested accord

44、ing to ASTM E 96, Procedure A, the 5.5 tested according to ASTM E 96, Procedure A, the average water vapor permeance shall be not more than 2900 ng/Pa-s.m2. To convert metric perms to ng/Pa.s.m2, multiply by 87.2. Water Vapor Permeance After Accelerated Aging - When three specimens are aged as descr

45、ibed in par. 7.2.3 and Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PREPARATION FOR DELIVERY 6.1 6.2 membrane conforming to this standard and applicable government regulations. Pac

46、king - Unless otherwise specified (par. 8.1) the material shall be supplied in commercial rolls. Marking - Each roll shall be plainly marked on the outside to identify the contents as breather type sheathing INSPECTION 7.1 turns of the roll have been removed. Sampling - Each sample shall consist of

47、a roll of the material. Specimens shall be taken after at least three outer 7.2 7.2.1 7.2.2 7.2.3 Testing - The methods of testing shall be as specified for each requirement. Pliability - Cut ten specimen strips, 150 mm by 25 mm, lengthwise in the machine direction of the sheathing membrane and expo

48、se them to a temperature of -10 f 2OC for at least 12 h. Test five specimens by bending them through 90C around a 15 mm diameter mandrel at -10 f 2OC. using a uniform bending rate so that the total bend is made in 2 s. The same side of the strip shall be next to the mandrel for each of the five specimens. Test the remaining five specimens with the opposite side of the strip next to the mandrel. Immediately after bending, examine the specimen strips by normal vision for cracks. There shall be no cracks on any of the ten strips. Tensile Strength - Determine the tensile strength on speci