1、Designation: D 3679 08An American National StandardStandard Specification forRigid Poly(Vinyl Chloride) (PVC) Siding1This standard is issued under the fixed designation D 3679; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the ye
2、ar 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, imp
3、actstrength, 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 r
4、equirements in Section 4.1.3 Rigid (unplasticized) PVC soffit is covered in Specifi-cation D 4477.1.4 Siding produced to this specification shall be installed inaccordance with Practice D 4756. Reference shall also be madeto the manufacturers installation instructions for the specificproduct to be i
5、nstalled.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 consi
6、dered 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 appr
7、opriate 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:2D 374 Test Methods for Thickness of Solid Electrical Insu-lationD 618 Practice for Conditionin
8、g Plastics for TestingD 635 Test Method for Rate of Burning and/or Extent andTime of Burning of Plastics in a Horizontal PositionD 696 Test Method for Coefficient of Linear Thermal Ex-pansion of Plastics Between 30C and 30C with aVitreous Silica DilatometerD 883 Terminology Relating to PlasticsD 104
9、2 Test Method for Linear Dimensional Changes ofPlastics Under Accelerated Service ConditionsD 1435 Practice for Outdoor Weathering of PlasticsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measu
10、red ColorCoordinatesD 2457 Test Method for Specular Gloss of Plastic Films andSolid PlasticsD 3892 Practice for Packaging/Packing of PlasticsD 4226 Test Methods for Impact Resistance of Rigid Poly-(Vinyl Chloride) (PVC) Building ProductsD 4477 Specification for Rigid (Unplasticized) Poly(VinylChlori
11、de) (PVC) SoffitD 4756 Practice for Installation of Rigid Poly(Vinyl Chlo-ride) (PVC) Siding and SoffitD 5033 Guide for Development of ASTM Standards Relat-ing to Recycling and Use of Recycled Plastics3D 5206 Test Method for Windload Resistance of RigidPlastic SidingE 631 Terminology of Building Con
12、structionsE 1753 Practice for Use of Qualitative Chemical Spot TestKits for Detection of Lead in Dry Paint FilmsG 147 Practice for Conditioning and Handling of Nonme-tallic Materials for Natural and Artificial Weathering Tests2.2 ASCE Standard:ASCE 7-02 Minimum Design Loads for Buildings andOther St
13、ructures43. Terminology3.1 Definitions are in accordance with TerminologiesD 883, E 631, and D 1600, 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 e
14、dition approved Oct. 1, 2008. Published October 2008. Originallyapproved in 1979. Last previous edition approved in 2006 as D 3679 06a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume inf
15、ormation, 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 the American Society of Civil Engineers, 1801 Alexander BellDr., Reston, VA 201914400.1*A Summary of Changes sectio
16、n 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 fastened tightly throug
17、h 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 in public claims
18、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 themost recent six m
19、onth 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 cladexterior walls of b
20、uildings.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 (vinyl chloride) (PV
21、C) compound shall be keptto less than 20% by volume.4.2 Where rigid PVC recycled plastic as defined in GuideD 5033 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, PhysicalRequirem
22、ents.4.3 The poly(vinyl chloride) siding material, when tested inaccordance with Test Method D 635, 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 flammabilitytestin
23、g data, conclusions, and recommendations of TestMethod D 635 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 description or appraisa
24、lof 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 compounded so as t
25、oprovide 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 both PVC substra
26、te 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 shall not be less
27、 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 afterinstallation of the pan
28、el, 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 in. below th
29、e 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 in 6.7.5.5 I
30、mpact 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 accordancewith 6.9.5.
31、7 GlossThe gloss of smooth and embossed siding shallbe uniform across the exposed surface. Variations in theglossmeter readings for smooth siding shall not be more than610 % or 6 5.0 points (whichever is greater). Variations forembossed siding shall not be more than 620 % or 610.0points (whichever i
32、s greater). Gloss of smooth and embossedsiding shall be tested in accordance with 6.11.5.8 Surface DistortionThe siding shall 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 Co
33、lorThe color of the siding shall be within thedefined color space parameters for the specific color agreedupon between the purchaser 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 C
34、olorWhen tested in accordance with6.13, the total color change, DE, between a production speci-men and the appropriate reference 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 We
35、athering:5.10.1 The siding shall maintain a uniform color and be freeof any visual surface or structural changes such 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” ex
36、trusion siding profile representing a specificcolor of PVC compound and a specific extrusion technology. In no case isthere an implied requirement for testing all the various shaped and sizedD3679082siding profiles produced in this color. The lengthy outdoor weatherabilitytesting for new products ma
37、y be performed concurrently with marketdevelopment and sales of siding to existing markets. Completion ofweatherability testing 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 P
38、a) when tested in accordance with 6.14.5.11.1 The static test pressure of 15.73 lbf/ft2(753 Pa) wasestablished to withstand 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(
39、1394 Pa) negative design pressure.5.11.1.1 The design-pressure values can be negative (suc-tion loads) or positive. The negative 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
40、 an existing exterior structural wall, forces (negative)working to pull the siding off the wall, fasteners, or disengage locks 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 sidi
41、ng.5.11.2 Refer to Annex A1 for an explanation as to how the29.12 lbf/ft2(1394 Pa) negative design pressure was estab-lished, 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
42、 mph (177 km/h) or elevations above 30 ft (9.1 m), orexposures other than exposure category B).5.12 Nail Slot Allowance for 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
43、 and contraction over a range of100F. Compliance with this requirement shall be demon-strated either by the test method in 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 manufac
44、turing tolerance shall not exceed-0.030 in.5.12.1 For panels shorter than 6 ft (1829 mm) in length, theminimum nail slot width 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 w
45、idth shall be the widthresulting from application of the formula, rounded to the nextlower quarter-inch. Regardless of the 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.
46、Pc= Center-pinning coefficient: 1 if manufacturers in-structions require panel to be center-pinned; 1.5 ifcenter-pinning is 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= Ce
47、ntering tolerance: 0.25 in.6. Test Methods6.1 GeneralThe inspection and test procedures containedin this section are used to determine the conformance ofproducts to the requirements of this specification. Each pro-ducer who represents its products as conforming to thisspecification shall be permitte
48、d to use statistically basedsampling plans that are appropriate for each manufacturingprocess, but shall keep the essential 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 th
49、e 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 Procedure A of Practice D 618and test under those conditions, unless otherwise specifiedherein.6.3 LengthLay the specimen on a flat surface and measurewith a steel tape. Measure the length of a siding panel to thenearest116 in. (1.6 mm) at the center, the butt edge, and thebottom of the top lock. The average of the three measurementsis the actual leng
