Designation:D3841−16AnAmericanNationalStandardStandardSpecificationforGlass-Fiber-ReinforcedPolyesterPlasticPanels1ThisstandardisissuedunderthefixeddesignationD3841;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationcoverstheclassification,materialsofconstruction,workmanship,minimumphysicalrequirements,andmethodsoftestingglass-fiberreinforcedpolyesterplasticpanelsintendedforuseinconstruction.Panelsforspecializedoruniqueapplicationshavethepotentialtorequirevaluessignificantlyaboveorbelowthosestatedinthisspecification.RecommendedpracticesforcertainspecificapplicationsareincludedasAppendixX1.Thisspecificationisnotintendedtorestrictorlimittechnologicalchangesaffectingperformancewhenthosechangesareagreeduponbetweenthepurchaserandtheseller.1.2Supplementaryinformationonchemicalresistance,re-sistancetoheat,andinstallationpracticesareprovidedinAppendixX1.1.3Theclassificationoftheseplasticpanelsintotypesbasedonrelativeresponsetoalaboratorytestshallnotbeconsideredafirehazardclassification.1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseinTablesandFigures)shallnotbeconsideredasrequirementsofthisstandard.1.6Firepropertiesaredeterminedbyusinglaboratoryflammabilitytests(TestMethodsD635,D1929,andE84).1.6.1Thisstandardisusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,productsorassembliesunderactualfireconditions.1.6.2Firetestingisinherentlyhazar...
