Designation:E1680−11StandardTestMethodforRateofAirLeakageThroughExteriorMetalRoofPanelSystems1ThisstandardisissuedunderthefixeddesignationE1680;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheresis-tanceofexteriormetalroofpanelsystemstoairinfiltrationresultingfromeitherpositiveornegativeairpressurediffer-ences.Thetestmethoddescribedisfortestswithconstanttemperatureandhumidityacrossthespecimen.ThistestmethodisaspecializedadaptionofTestMethodE283.1.2Thistestmethodisapplicabletoanyroofarea.Thistestmethodisintendedtomeasureonlytheairleakageassociatedwiththefieldoftheroof,includingthepanelsidelapsandstructuralconnections;itdoesnotincludeleakageattheopeningsorperimeteroranyotherdetails.1.3Theproperuseofthistestmethodrequiresknowledgeoftheprinciplesofairflowandpressuremeasurements.1.4Thetextofthistestmethodreferencesnotesandfootnotesexcludingtablesandfigures,whichprovideexplana-torymaterial.Thesenotesandfootnotesshallnotbeconsid-eredtoberequirementsofthetestmethod.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeSection7.2.ReferencedDocuments2.1ASTMStandards:2E283TestMethodforDeterminingRateofAirLeakageThroughExteriorWindows,CurtainWalls,andDoorsUnderSpecifiedPressureDifferencesAcrosstheSpeci-menE631TerminologyofBuildingConstructionsE1592TestMethodforStructuralPerformanceofSheetMetalRoofandSidingSystemsbyUn...
