bs 476-7-1997建筑材料和构件的燃烧试验 制品表面火势蔓延的试验和分级方法（可编辑）

BS47671997建筑材料和构件的燃烧试验制品表面火势蔓延的试验和分级方法|BS476BRITISHSTANDARD|PART71997|FIRETESTSONBUILDING|MATERIALSANDSTRUCTURES|PART7METHODOFTESTTODETERMINETHE|CLASSIFICATIONOFTHESURFACESPREADOF|FLAMEOFPRODUCTS|ICS1322050|NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAW|LICENSEDCOPYAUBUSER,NA,WEDMAR28033458GMT00002007,UNCONTROLLEDCOPY,CBSIBS476PART71997COMMITTEESRESPONSIBLEFORTHISBRITISHSTANDARDTHEPREPARATIONOFTHISBRITISHSTANDARDWASENTRUSTEDBYTECHNICALCOMMITTEEFSH/21,REACTIONTOFIRETESTS,UPONWHICHTHEFOLLOWINGBODIESWEREREPRESENTEDASSOCIATIONOFBUILDINGCOMPONENTMANUFACTURERSASSOCIATIONOFROOFLIGHTMANUFACTURERSAUTOCLAVEDAERATEDCONCRETEPRODUCTSASSOCIATIONBRITISHCARPETMANUFACTURERSASSOCIATIONLTDBRITISHIRONANDSTEELPRODUCERSASSOCIATIONBRITISHPLASTICSFEDERATIONBRITISHRAILWAYSBOARDBRITISHRESILIENTFLOORINGMANUFACTURERSASSOCIATIONBRITISHRIGIDURETHANEFOAMMANUFACTURERSASSOCIATIONBRITISHWOODPRESERVINGANDDAMPPROOFINGASSOCIATIONCHEMICALINDUSTRIESASSOCIATIONCHIEFANDASSISTANTCHIEFFIREOFFICERSASSOCIATIONDEPARTMENTOFHEALTHDEPARTMENTOFTHEENVIRONMENTBUILDINGRESEARCHESTABLISHMENTDEPARTMENTOFTHEENVIRONMENTPROPERTYANDBUILDINGSDIRECTORATEDEPARTMENTOFTHEENVIRONMENTFORNORTHERNIRELANDEURISOLUKMINERALWOOLASSOCIATIONEUROPEANPHENOLICFOAMASSOCIATIONFIBRECEMENTMANUFACTURERSASSOCIATIONLIMITEDFLATGLASSMANUFACTURERSASSOCIATIONGAMBICABEAMALTDGYPSUMPRODUCTSDEVELOPMENTASSOCIATIONHOMEOFFICEINSTITUTEOFFIRESAFETYINSTITUTIONOFFIREENGINEERSLONDONFIREANDCIVILDEFENCEAUTHORITYLOSSPREVENTIONCOUNCILNATIONALCOUNCILOFBUILDINGMATERIALPRODUCERSNATIONALGRPCONSTRUCTIONANDENGINEERINGFEDERATIONPOLYETHYLENEFOAMINSULATIONASSOCIATIONQUEENMARYANDWESTFIELDCOLLEGERAPRATECHNOLOGYLTDSPECIALISTCEILINGSANDINTERIORSASSOCIATIONLTDTHERMALINSULATIONMANUFACTURERSANDSUPPLIERSASSOCIATIONTIMSATIMBERRESEARCHANDDEVELOPMENTASSOCIATIONWARRINGTONFIRERESEARCHCENTREWOODPANELINDUSTRIESFEDERATIONWOODWOOLSLABMANUFACTURERSASSOCIATIONCOOPTEDMEMBERSTHISBRITISHSTANDARD,HAVINGBEENPREPAREDUNDERTHETHEFOLLOWINGBODIESWEREALSOREPRESENTEDINTHEDRAFTINGOFTHESTANDARD,THROUGHDIRECTIONOFTHECONSUMERSUBCOMMITTEESANDPANELSPRODUCTSANDSERVICESSECTORBOARD,WASPUBLISHEDUNDERTHEAUTHORITYOFTHESTANDARDSBOARDBRITISHTEXTILETECHNOLOGYGROUPANDCOMESINTOEFFECTONUNIVERSITYOFEDINBURGH15JANUARY1997BSI1997AMENDMENTSISSUEDSINCEPUBLICATIONFIRSTPUBLISHEDASBS476AMDNODATETEXTAFFECTEDDECEMBER1932SECONDEDITIONJULY1953FIRSTPUBLISHEDASBS476PART7FEBRUARY1971SECONDEDITIONJUNE1987THIRDEDITIONJANUARY1997THEFOLLOWINGBSIREFERENCESRELATETOTHEWORKONTHISSTANDARDCOMMITTEEREFERENCEFSH/21DRAFTFORCOMMENT94/307806DCISBN0580262987LICENSEDCOPYAUBUSER,NA,WEDMAR28033458GMT00002007,UNCONTROLLEDCOPY,CBSIBS476PART71997CONTENTSPAGEFOREWORDIIMETHOD1SCOPE12NORMATIVEREFERENCES13DEFINITIONS14SUITABILITYOFAPRODUCTFORTESTING25TESTSPECIMENS26APPARATUS37ANCILLARYEQUIPMENT118CALIBRATION129TESTPROCEDURE1310RECORDINGOFRESULTS1411CLASSIFICATIONOFRESULTS1412REPORT15ANNEXESAINFORMATIVEGUIDANCEFOROPERATORS16BINFORMATIVEEFFECTOFTHERMALCHARACTERISTICSONTHEPERFORMANCEOFASSEMBLIES16CINFORMATIVEVALIDATIONOFTESTMETHOD17TABLES1IRRADIANCEALONGHORIZONTALREFERENCELINEONTHECALIBRATIONBOARD132CLASSIFICATIONOFSPREADOFFLAME15FIGURES1GENERALARRANGEMENTOFATYPICALAPPARATUS52TYPICALDESIGNOFSPECIMENHOLDER63POSITIONOFSPECIMENHOLDERINRELATIONTORADIATIONPANEL84POSITIONOFPILOTBURNERINRELATIONTOSURFACEOFSPECIMEN95TYPICALDIAGRAMMATICARRANGEMENTOFGASANDAIRSUPPLY106CALIBRATIONBOARD127REFERENCELINESTOASSISTSURFACESPREADOFFLAMECLASSIFICATION14LISTOFREFERENCESINSIDEBACKCOVERBSI1997ILICENSEDCOPYAUBUSER,NA,WEDMAR28033458GMT00002007,UNCONTROLLEDCOPY,CBSIBS476PART71997FOREWORDTHISPARTOFBS476HASBEENPREPAREDBYTECHNICALCOMMITTEEFSH/21ITSUPERSEDESBS476PART71987,WHICHISWITHDRAWN,BUTBOTHTHE1971AND1987EDITIONSWILLSTILLBEMADEAVAILABLEONREQUESTSINCETHEYAREREFERREDTOINBUILDINGREGULATIONSANDOTHERLEGISLATIVEDOCUMENTSNOTEUPONPUBLICATIONOFBS476PART71996,BSICUSTOMERSERVICESDEPARTMENTWILLRESPONDTOPURCHASEORDERSFORBS476PART7BYSUPPLYINGTHE1996EDITIONCOPIESOFTHE1987OR1971EDITIONSMAYBEOBTAINEDBYQUOTINGTHENUMBERBS476/7/87ORBS476/7/71RESPECTIVELYTHISREVISIONHASBEENPREPAREDWITHTHEAIMOFIMPROVINGTHEREPEATABILITYANDREPRODUCIBILITYOFTHETESTRESULTSBYCLARIFYINGPROCEDURESANDBYGIVINGADDITIONALGUIDANCETOTESTOPERATORSTHECHANGESINCORPORATEDINTOTHISREVISIONARENOTEXPECTEDTOCAUSECHANGESINMATERIALCLASSIFICATIONSINTHISMETHOD,SPECIMENSOFTHEPRODUCTMATERIAL,COMPOSITEORASSEMBLYARESUBJECTEDTOASPECIFIEDHEATINGANDIGNITIONREGIMETHETESTTAKESACCOUNTOFTHECOMBINEDEFFECTOFFACTORSSUCHASIGNITIONCHARACTERISTICSANDTHEEXTENTTOWHICHTHEFLAMESPREADSOVERTHESURFACEOFTHEPRODUCTUNDEROPPOSEDFLOWCONDITIONSTHEINFLUENCEOFANYUNDERLYINGMATERIALSONTHESEFACTORS,INRELATIONTOTHEIRABILITYTOINFLUENCETHERATEOFFIREGROWTH,ISALSOTAKENINTOACCOUNTTHETESTRESULTISAFUNCTIONOFTHEDISTANCEANDRATEOF,THELATERALSPREADOFFLAMEANDTHISISCLASSIFIEDACCORDINGTOPERFORMANCEASCLASSES1TO4ASERIESOFNEWREACTIONTOFIRETESTSISUNDERDEVELOPMENTINISO/TC92/SC1,REACTIONTOFIRETESTSTHEUKISPARTICIPATINGINTHISWORK,WHICHWILLDEFINESMALLSCALE,INTERMEDIATESCALEANDLARGESCALETESTSFORIGNITABILITY,HEATRELEASERATEANDFLAMEPROPAGATIONISO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