1、Designation:D447722An American National StandardStandard Specification forRigid(Unplasticized)Poly(Vinyl Chloride)(PVC)Soffit1This standard is issued under the fixed designation D4477;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,t
2、he year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification establishes requirements and testmethods for the materials,dimensions,camber,impactstrength,e
3、xpansion,and appearance of extruded single-wallsoffit manufactured from rigid(unplasticized)PVC compound.Methods of indicating compliance with this specification arealso provided.1.2 The use of PVC recycled plastic in this product shall bein accordance with the requirements in Section 4.1.3 Soffit p
4、roduced to this specification shall be installed inaccordance with Practice D4756.Reference shall also be madeto the manufacturers installation instructions for the specificproduct to be installed.NOTE1Information with regard to soffit maintenance shall beobtained from the manufacturer.1.4 The value
5、s stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 The following precautionary caveat pertains to the testmethod portion only,Section 6 of this sp
6、ecification.Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety,health,andenvironmental practices and determine the applicability ofregulatory limitations prior to use.
7、NOTE2There is no known ISO equivalent to this standard.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issue
8、d by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD635 Test Method for Rate of Burning and/or Extent andTime of Burning of Plastics in a Horizontal PositionD696 Test Method for Coeff
9、icient of Linear Thermal Expan-sion of Plastics Between 30C and 30C with a VitreousSilica DilatometerD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measured C
10、olorCoordinatesD2457 Test Method for Specular Gloss of Plastic Films andSolid PlasticsD3892 Practice for Packaging/Packing of PlasticsD4226 Test Methods for Impact Resistance of Rigid Poly-(Vinyl Chloride)(PVC)Building ProductsD4756 Practice for Installation of Rigid Poly(Vinyl Chlo-ride)(PVC)Siding
11、 and SoffitD5033 Guide for Development ofASTM Standards Relatingto Recycling and Use of Recycled Plastics(Withdrawn2007)3D5947 Test Methods for Physical Dimensions of SolidPlastics SpecimensE631 Terminology of Building ConstructionsE1753 Practice for Use of Qualitative Chemical Spot TestKits for Det
12、ection of Lead in Dry Paint Films3.Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nologies D883,D1600,and E631,unless otherwise specified.3.2 Definitions of Terms Specific to This Standard:3.2.1 nominal,(as related to dimensions of vinyl soffts),adjthe value that a manufacturer c
13、onsistently uses to repre-sent a specific property or dimension of a vinyl soffit product in1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.24 on Plastic BuildingProducts.Current edition approved May 1,2022.Published
14、 May 2022.Originallyapproved in 1985.Last previous edition approved in 2021 as D4477 21.DOI:10.1520/D4477-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standard
15、s Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States
16、This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1public claims including,but not limited to,product literature,advertisements,quotations,and certificates of conformance.3.2.2 vinyl sofft,na shaped material,made principallyfrom rigid p
