1、Designation: D3679 09aAn American National StandardStandard Specification forRigid Poly(Vinyl Chloride) (PVC) Siding1This standard is issued under the fixed designation D3679; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea
2、r 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. Scope*1.1 This specification establishes requirements and testmethods for the materials, dimensions, warp, shrinkage, impa
3、ctstrength, expansion, appearance, and windload resistance ofextruded single-wall siding manufactured from rigid (unplas-ticized) PVC compound. Methods of indicating compliancewith this specification are also provided.1.2 The use PVC recycled plastic in this product shall be inaccordance with the re
4、quirements in Section 4.1.3 Rigid (unplasticized) PVC soffit is covered in Specifi-cation D4477.1.4 Siding produced to this specification shall be installed inaccordance with Practice D4756. Reference shall also be madeto the manufacturers installation instructions for the specificproduct to be inst
5、alled.NOTE 1Information with regard to siding maintenance shall beobtained from the manufacturer.1.5 The values 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 consider
6、ed standard.1.6 The following precautionary caveat pertains to the testmethod portion only, Section 6, of this specification: 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 appropr
7、iate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.NOTE 2There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:2D374 Test Methods for Thickness of Solid Electrical Insu-lationD618 Practice for Conditioning Pla
8、stics for TestingD635 Test Method for Rate of Burning and/or Extent andTime of Burning of Plastics in a Horizontal PositionD696 Test Method for Coefficient of Linear Thermal Ex-pansion of Plastics Between 30C and 30C with aVitreous Silica DilatometerD883 Terminology Relating to PlasticsD1042 Test Me
9、thod for Linear Dimensional Changes ofPlastics Under Accelerated Service ConditionsD1435 Practice for Outdoor Weathering of PlasticsD1600 Terminology for Abbreviated Terms Relating toPlasticsD2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measured ColorCoo
10、rdinatesD2457 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 ProductsD4477 Specification for Rigid (Unplasticized) Poly(VinylChloride) (PVC) Soffit
11、D4756 Practice for Installation of Rigid Poly(Vinyl Chlo-ride) (PVC) Siding and SoffitD5033 Guide for Development of ASTM Standards Relat-ing to Recycling and Use of Recycled Plastics3D5206 Test Method for Windload Resistance of RigidPlastic SidingE631 Terminology of Building ConstructionsE1753 Prac
12、tice for Use of Qualitative Chemical Spot TestKits for Detection of Lead in Dry Paint FilmsG147 Practice for Conditioning and Handling of Nonmetal-lic Materials for Natural and Artificial Weathering Tests2.2 ASCE Standard:ASCE 7-02 Minimum Design Loads for Buildings andOther Structures43. Terminolog
13、y3.1 Definitions are in accordance with Terminologies D883,E631, and D1600, unless otherwise specified.1This 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 Nov. 1, 2
14、009. Published December 2009. Originallyapproved in 1979. Last previous edition approved in 2009 as D3679 09. DOI:10.1520/D3679-09A.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume inform
15、ation, refer to the standards Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.4Available from American Society of Civil Engineers (ASCE), 1801 AlexanderBell Dr., Reston, VA 20191, http:/www.asce.org.1*A Summary o
16、f Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2 Definitions of Terms Specific to This Standard:3.2.1 center-pinningan installation technique in which thesiding panel is fastene
17、d tightly through the nail slot at thecenter length of the panel, in order to cause thermal expansionand contraction to occur equally in both directions from thecenter.3.2.2 nominalthe value that a manufacturer consistentlyuses to represent a specific property or dimension of a vinylsiding product i
18、n public claims including, but not limited to,product literature, advertisements, quotations, and certificatesof conformance.3.2.3 process average thicknessthe rolling, arithmeticmean of average specimen thicknesses measured according to6.5 for a specific product during all productions runs for them
19、ost recent six month period.3.2.4 temperate northern climate in weather testing,aNorth American metropolitan area testing site located within73 to 100W longitude and 37 to 45N latitude.3.2.5 vinyl sidinga shaped material, made principallyfrom rigid poly(vinyl chloride) (PVC), that is used to cladext
20、erior walls of buildings.3.2.5.1 DiscussionAny exception to a homogeneous rigidPVC compound is present in a coextruded or laminatedcapstock.4. Materials and Manufacture4.1 The siding shall be made of one or more layers ofpoly(vinyl chloride) (PVC) compound.Any layers of materialsother than poly (vin
21、yl chloride) (PVC) compound shall be keptto less than 20% by volume.4.2 Where rigid PVC recycled plastic as defined in GuideD5033 is used, the siding containing the PVC recycled plasticshall meet all of the requirements of Section 3, Terminology;Section 4, Materials and Manufacture; and Section 5, P
22、hysicalRequirements.4.3 The poly(vinyl chloride) siding material, when tested inaccordance with Test Method D635, shall not exceed anaverage extent of burn of 4 in. (100 mm), with an average timeof burn not to exceed 10 s. A minimum sample thickness of0.035 in. (0.9 mm) is required. Warning The flam
23、mabilitytesting data, conclusions, and recommendations of TestMethod D635 related solely to the measurement and descrip-tion of properties for classification of the poly(vinyl chloride)siding material in response to flame under controlled laboratoryconditions and shall not be used for the descriptio
24、n or appraisalof the fire hazard of vinyl siding under actual fire conditions.4.4 The PVC compound when extruded into siding shallmaintain uniform color and be free of any visual surface orstructural changes, such as peeling, chipping, cracking, flaking,or pitting.4.5 The PVC compound shall be compo
25、unded so as toprovide the heat stability and weather exposure stabilityrequired for the siding market application.4.6 PVC siding shall not contain elemental lead (Pb) orcompounds of that material other than traces incidental to rawmaterials or the manufacturing process. This limitation appliesto bot
26、h PVC substrate and to any cap or film material.Compliance with this requirement shall be demonstrated byone of the methods in 6.165. Physical Requirements5.1 Length and WidthThe nominal length and width of thesiding shall be as agreed upon between the purchaser and theseller. The actual length shal
27、l not be less than14 in. (6.4 mm)of the nominal length and the actual width shall be within 6116in. (1.6 mm) of the nominal width when measured in accor-dance with 6.3 and 6.4.5.2 ThicknessThese requirements pertain only to mea-surements of the portions of the siding that are exposed afterinstallati
28、on of the panel, measured in accordance with theprocedure in 6.5. The average thickness of each specimen shallbe no less than 0.035 in. No individual measurement shall bethinner than 0.003 in. below the nominal thickness. Theprocess average thickness as defined in 3.2.3 shall be nothinner than 0.001
29、 in. below the nominal thickness.5.3 CamberA full length of siding (typically 10 or 12 ft(3.05 or 3.61 m) shall not have a camber greater than18 in.(3.2 mm) when measured in accordance with 6.6.5.4 Heat ShrinkageThe average heat shrinkage shall notexceed 3.0 % when determined by the method described
30、 in 6.7.5.5 Impact ResistanceSiding shall have a minimum im-pact strength of 60 in.lbf (6.78 J) when tested in accordancewith 6.8.5.6 Coeffcient of Linear Expansion The siding shall havea coefficient of linear expansion not greater than 4.5 by 105in./in./F (8.1 by 105mm/mm/C) when tested in accordan
31、cewith 6.9.5.7 GlossThe gloss of smooth and embossed siding shallbe uniform across the exposed surface. The average of allreadings for a panel determined in 6.11.2.5 shall not differ fromthe manufacturers specified gloss value more than the permit-ted variation in Table 1, and each individual readin
32、g shall notvary more than 10 points from the average. Gloss of smoothand embossed siding shall be tested in accordance with 6.11.TABLE 1Manufacturers SpecifiedGloss ValuePermitted difference fromMfg. Spec. Gloss ValueLess than or equal to 35 68Greater than 35 6105.8 Surface DistortionThe siding shal
33、l be free of bulges,waves, and ripples when tested to a minimum temperature of120F (49C) in accordance with the procedure in 6.12. Thisdistortion is called “oil-canning.”5.9 ColorThe color of the siding shall be within thedefined color space parameters for the specific color agreedupon between the p
34、urchaser and the manufacturer. The colorspecified shall be uniform on the surface of the siding panels,except in the case of multicolored woodgrain panels.5.9.1 Uniformity of ColorWhen tested in accordance with6.13, the total color change, DE, between a production speci-men and the appropriate refer
35、ence specimen or agreed-uponcolor coordinates shall not vary by more than 1.5, and thechromatic coordinates thereof shall not change by more than6DaH= 1.0 and 6DbH= 1.0.5.10 Weathering:D3679 09a25.10.1 The siding shall maintain a uniform color and be freeof any visual surface or structural changes s
36、uch as peeling,chipping, cracking, flaking, and pitting when tested in accor-dance with 6.10.NOTE 3Weathering-conformance-testing requirements are to reflectperformance of a “typical” extrusion siding profile representing a specificcolor of PVC compound and a specific extrusion technology. In no cas
37、e isthere an implied requirement for testing all the various shaped and sizedsiding profiles produced in this color. The lengthy outdoor weatherabilitytesting for new products may be performed concurrently with marketdevelopment and sales of siding to existing markets. Completion ofweatherability te
38、sting prior to marketing of the product is not required.5.11 Windload ResistanceThe siding panel(s) shall beable to withstand a minimum static test pressure of 15.73lbf/ft2(753 Pa) when tested in accordance with 6.14.5.11.1 The static test pressure of 15.73 lbf/ft2(753 Pa) wasestablished to withstan
39、d structural loading conditions thatoccur in 110 mph (177 km/h) wind-zone areas for elevations of30 ft (9.1 m) and less in exposure category B, and is equivalentto 29.12 lbf/ft2(1394 Pa) negative design pressure.5.11.1.1 The design-pressure values can be negative (suc-tion loads) or positive. The ne
40、gative values are the largest inmagnitude and are the values used in this specification.NOTE 4In that the siding is being tested as a weather-resistant exteriorproduct applied to an existing exterior structural wall, forces (negative)working to pull the siding off the wall, fasteners, or disengage l
41、ocks willbe the most important criteria for testing. Positive wind forces test theintegrity of the total wall sections, and do not provide a measure of theperformance of the siding.5.11.2 Refer to Annex A1 for an explanation as to how the29.12 lbf/ft2(1394 Pa) negative design pressure was estab-lish
42、ed, and for applications where the effective negative designpressure as specified in ASCE 7-02 is greater than 29.12lbf/ft2(1394 Pa) (for example, wind-zone areas greater than110 mph (177 km/h) or elevations above 30 ft (9.1 m), orexposures other than exposure category B).5.12 Nail Slot Allowance fo
43、r Thermal ExpansionFor sid-ing panels utilizing nail slots to allow for thermal expansionand contraction, the nail slot shall be sized to allow for theexpected range of expansion and contraction over a range of100F. Compliance with this requirement shall be demon-strated either by the test method in
44、 6.15 or by sizing of the nailslots according to the specifications in the following sections.The instrument used shall be capable of measuring to thenearest 0.01 in. The manufacturing tolerance shall not exceed-0.030 in.5.12.1 For panels shorter than 6 ft (1829 mm) in length, theminimum nail slot w
45、idth shall be38 in. (11.4 mm).5.12.2 For panels 6 ft (1829 mm) in length or longer theminimum nail slot width shall be determined according to thefollowing formula. The minimum width shall be the widthresulting from application of the formula, rounded to the nextlower quarter-inch. Regardless of the
46、 results of the calculation,the minimum nail slot width for panels 6 feet or longer shall be1 in (25.4 mm).WS 5 Pc3 a3100 F 3 L! 1 Tc(1)Where:WS = Minimum width of nail slot, in.Pc= Center-pinning coefficient: 1 if manufacturers in-structions require panel to be center-pinned; 1.5 ifcenter-pinning i
47、s not requireda = Coefficient of linear thermal expansion, 4.5 3 10-5in./in./F or actual known coefficient for materialused, as determined by 6.9L = Length of panel, inchesTc= Centering tolerance: 0.25 in.6. Test Methods6.1 GeneralThe inspection and test procedures containedin this section are used
48、to determine the conformance ofproducts to the requirements of this specification. Each pro-ducer who represents its products as conforming to thisspecification shall be permitted to use statistically basedsampling plans that are appropriate for each manufacturingprocess, but shall keep the essentia
49、l records necessary todocument, with a high degree of assurance, his claim that all ofthe requirements of this specification have been met. Addi-tional sampling and testing of the product, as agreed uponbetween the purchaser and the manufacturer, are not precludedby this section.6.2 Conditioning and Test Conditions Condition the testspecimen in accordance with ProcedureAof Practice D618 andtest under those conditions, unless otherwise specified herein.6.3 LengthLay the specimen on a flat surface and measurewith a steel tape. Measu
