1、Designation:D520613An American National StandardStandard Test Method forWindload Resistance of Rigid Plastic Siding1This standard is issued under the fixed designation D5206;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of
2、 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 test method describes methods for testing andevaluating windload resistance of rigid plastic siding whenfastened in a
3、ccordance with Practice D4756.1.2 The proper use of this test method requires a knowledgeof the principles of pressure measurement.1.3 This test method describes the apparatus and the proce-dures to be used to determine an average maximum sustainedstatic test pressure,or ultimate test pressure value
4、s,or both,with static pressure applied uniformly to a specimen.NOTE1There is no known ISO equivalent to this test method.1.4 The values expressed in inch-pound units are to beregarded as the standard.The SI equivalents in parentheses arefor information only.1.5 This standard does not purport to addr
5、ess all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specificprecautionary statements,see Section 7.2.Referen
6、ced Documents2.1 ASTM Standards:2D883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3679 Specification for Rigid Poly(Vinyl Chloride)(PVC)SidingD4756 Practice for Installation of Rigid Poly(Vinyl Chlo-ride)(PVC)Siding and SoffitE631 Terminology of Build
7、ing Constructions3.Terminology3.1 GeneralDefinitions are in accordance with Terminolo-gies D883 and E631 and abbreviations are in accordance withTerminology D1600 unless otherwise indicated.3.2 Definitions of Terms Specific to This Standard:3.2.1 maximum sustained static test pressurethe greatestdif
8、ference in static air pressure(negative or positive)that a testspecimen withstands without failure,expressed as force persquare foot(or pascals).3.2.2 nail hem thicknessthe average thickness of the nailhem as measured between the nail slots.3.2.3 specimenthe entire assembled siding panel as de-scrib
9、ed in Section 8.3.2.4 static test pressurethe specific difference in static airpressure(positive or negative)for which the specimen is to betested expressed as force per square foot(or pascals).3.2.5 ultimate test pressurethe difference in static airpressure(positive or negative)at which failure occ
10、urs ex-pressed as force per square foot(or pascals).4.Summary of Test Method4.1 This method can be used to determine either themaximum sustained static test pressure or the ultimatepressure,or both,for the siding specimen.The procedureconsists of sealing the test specimen with or against one face of
11、a test chamber,supplying air to or exhausting air from thechamber at a rate required to maintain a specific static airpressure across the specimen for a specific time period.Pressure is applied in increments and the sample observed forfailure at each stage,to determine the maximum sustainedstatic te
12、st pressure,the ultimate test pressure,or both.5.Significance and Use5.1 This test method is a standard procedure for determiningwindload resistance of rigid plastic siding under specifieduniform static pressure difference.This typically is intended torepresent the effects of wind loads on exterior
13、building sur-faces.The actual loading on building surfaces is quite complex,varying with wind direction,time,height above ground,building shape,terrain,surrounding structures,and other fac-tors.1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibil
14、ity of Subcommittee D20.24 on Plastic BuildingProducts.Current edition approved Jan.1,2013.Published January 2013.Originallyapproved in 1991.Last previous edition approved in 2006 as D5602 06a.DOI:10.1520/D5206-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Cust
15、omer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.2 Design wind pressure is selected for s
16、pecific geographi-cal locations from wind velocity maps prepared by the NationalWeather Service or other sources.Refer to Annex A1 ofSpecification D3679 for additional detailed information relat-ing to use of this test method for evaluation of rigid poly(vinylchloride)(PVC)siding.NOTE2In applying the results of this test method,note that theperformance of rigid PVC siding is a function of installation,and thespecimen may or may not truly represent the actual application.In service,performance wi
