BS6853:1999AnnexD(asreferredtoinBS6853:1999Codeofpracticeforfireprecauti***inthedesignandc***tructionofpassengercarryingtrains)detailsatestmethodandproceduretobeusedforthemeasurementof***okedensityoftheproductsofcombustionofmaterials.Thetestmethodisutilisedforthe***okeclassificationofallproductsutilisedonboardthetrainandformsanintegralpartofalltheclassificationtables(Tables1to14),asreferredtoinBS6853:1999.ItisalsocalleduponbytheLondonUndergroundspecificationCAT1Number2-01001-002,IssueA1December2003,formallyreferredtoasE1042A6).Thetestisperformedinsideachambermeasuring3metresby3metresby3metresandthetestissometimesreferredtoasthethreemetrecubetest.Dependingonwhattheproducttobetestedis,therearedifferingarrangementsinsidethechamberforthetestpiece.Eachdifferenttesttypehasitsownreferenceasfollows:AnnexD.8.3–***allscaletest.Forspecimensoffabric(notincludingseatupholstery)orspecimenswhichweighlessthan500g(internally)or2000g(externally)andh***easurfaceareaoflessthan0.2m²inpractice(refertotables7,8and11ofBS6853:1999).AnnexD.8.4–PanelTestFortestspecimenswhichexceedthemeasurementsof***allscalematerialsandareusedasseatshell,bothinteriorandexteriorverticalsurfacesandhorizontalpronesurfaces(refertotables2,3,5,6and10ofBS6853:1999).AnnexD.8.5–SeatTestForspecimensutilisedasSeatTrim(refertotable9ofBS6853:1999).Note:Testsshouldbeperformedonactualspecimenseats.Fordevelopmentpurposes,specimensofthematerialsandapproximatec***tructionmaybeused,anditisrecommendedthattwosimulatedsquabunitsofminimumsize400mmby400mmandof25mmthicknessofthecoreadcovercompositebeusedsuitablefittedtogetherinanapproximateseatconfiguration.Resultsfromsuchtestscannotberegardedasmorethanindicativeofprobableperformanceofanactualseat.AnnexD.8.6–FlooringTestForspecimensutilisedasinteriorandexteriorhorizontalsupinesurfacessuchasfloorcoverings,tabletopsandmattresses(refertotables1,4and12ofBS6853:1999).AnnexD.8.7–CableTestForspecimensofcablesutilisedbothinsideandoutsidethevehicle(refertotables13and14ofBS6853:1999).)