Designation:D2017–05StandardTestMethodofAcceleratedLaboratoryTestofNaturalDecayResistanceofWoods1ThisstandardisissuedunderthefixeddesignationD2017;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheevaluationofthenaturaldecayresistanceofwood.Thetestmethodmayalsobeusedtoevaluatetheresistanceofwoodproductsorofotherorganicmaterialssubjecttodecaybywood-destroyingfungi,suchasthoseemployedinthetest.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1413TestMethodforWoodPreservativesbyLaboratorySoil-BlockCulturesD3507TestMethodforPreservativePenetrationandDif-ferentiatingbetweenHeartwoodandSapwood3.SignificanceandUse3.1Thistestmethodisusefulindeterminingtherelativedecayresistancebetweenvariousspeciesofwood.Itisaninitialmeansofestimatingtheabilityofawoodspeciestoresistseveremicrobialattackand,thereby,qualifyingtheperformancelevelofawoodspecies.3.2Thistestmethodisnotintendedtoprovidequantifiablyreproduciblevalues.Itisaqualitativetestmethoddesignedtoprovideareproduciblemeansofestablishingrelativedecayresistancebetweenvariousspeciesofwood.4.SummaryofTestMethod4.1Woodsamplesintheformofsmallblocksthatrepresentthetimberspeciesorproducttobeevaluatedareexposedindecaychamberstopureculturesofdecayfungi.Thedecayfungiaregrownonafeederstripofdecay-susceptiblewoodoronfilterpaperplacedonthesubstrateinthechamber.Thetestblocksareweighedbeforeandafterexposure,andanylossinweightisthemeasureofdecaysusceptibilityorresistanceofthewood.Thetestisterminatedwhennondurable,woodreferenceblocksindicateaweightlossof50%orgreater,orafter16we...
