Designation:C656−07(Reapproved2013)StandardSpecificationforStructuralInsulatingBoard,CalciumSilicate1ThisstandardisissuedunderthefixeddesignationC656;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversstructuralinsulatingboardforgeneralthermalinsulating,fire-resistive,andmarinebulkheadapplications.Therigid,preformedstructuralinsulatingboardisforuseattemperaturesupto1700°F(927°C).Forspecificapplications,theactualtemperaturelimitshallbeagreeduponbetweenthemanufacturerandthepurchaser.1.2Thestructuralinsulatingboardmaintainsitsstructuralintegrityafterimmersioninwater.1.3Rapidcyclingoverawidetemperaturerangeisnotrecommendedbecauseofpotentialdamageduetothermalshock.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.6Whentheinstallationoruseofthermalinsulationmaterials,accessoriesandsystems,mayposesafetyorhealthproblems,themanufacturershallprovidetheuserappropriatecurrentinformationregardinganyknownproblemsassociatedwiththerecommendeduseofthecompany’sproducts,andshallalsorecommendprotectivemeasurestobeemployedintheirsafeutilization.Theusershallestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregula-toryrequirementspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C165TestMethodforMeasuringCompressivePropertiesofThermalInsulationsC168TerminologyRelatingtoThermalInsulationC177TestMethodforSteady-StateHeatFluxMeasure-mentsandThermalTransmis...
