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Report No.15300-100596 Supplement page 1 of 6 <br /> 3M Commercial Graphics Division January 4,1999 <br /> I. INTRODUCTION <br /> This report describes the results of the ASTM E84-95 Standard Test Method for <br /> SURFACE BURNING CIIARACTERISTICS OF BUILDING MATERIALS', a <br /> method for determining the comparative surface burning behavior of building <br /> materials. This test is applicable to exposed surfaces, such as ceilings or walls, <br /> provided that the material or assembly of materials,by its own structural quality <br /> or the manner in which it is tested and intended for use,is capable of supporting <br /> itself in position or being supported during the test period. <br /> The purpose of the method is to determine the relative burning behavior of the <br /> material by observing the flame spread along the specimen. Flame spread and <br /> smoke density developed are reported,however,there is not necessarily a <br /> relationship between these two measurements. <br /> "The use of supporting materials on the underside of the test specimen may lower <br /> the flame spread index from that which might be obtained if the specimen could <br /> be tested without such support... This method may not be appropriate for <br /> obtaining comparative surface burning behavior of some cellular plastic <br /> materials... Testing of materials that melt, drip,or delaminate to such a degree <br /> that the continuity of the flame front is destroyed,results in low flame spread <br /> indices that do not relate directly to indices obtained by testing materials that <br /> remain in place." <br /> This test method is also published under the following designations: <br /> ANSI 2.5 <br /> NFPA 255 <br /> UBC 42-1 <br /> UL 723 <br /> This standard should be used to measure and describe the properties of <br /> materials,products,or assemblies in response to heat and flame under <br /> controlled laboratory conditions and should not be used to describe or <br /> appraise the fire hazard or fire risk of materials,products,or assemblies <br /> under actual fire conditions. However,results of this test may be used as <br /> elements ofa fire risk assessment which fake•into account all of the factors <br /> which are pertinent to an assessment of the fire hazard of a particular end <br /> use. <br /> r American Society for Testing and Materials(ASTM),Committee E-5 an Fire Standards. <br /> n<V <br /> 1 <br />