1、Designation:E11915An American National StandardStandard Test Methods forFire Tests of Building Construction and Materials1This standard is issued under the fixed designation E119;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the ye
2、ar of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.INTRODUCTIONThe performance of walls,column
3、s,floors,and other building members under fire-exposureconditions is an item of major importance in securing constructions that are safe,and that are not amenace to neighboring structures or to the public.Recognition of this is registered in the codes ofmany authorities,municipal and other.It is imp
4、ortant to secure balance of the many units in a singlebuilding,and of buildings of like character and use in a community;and also to promote uniformityin requirements of various authorities throughout the country.To do this it is necessary that thefire-resistive properties of materials and assemblie
5、s be measured and specified according to a commonstandard expressed in terms that are applicable alike to a wide variety of materials,situations,andconditions of exposure.Such a standard is found in the test methods that follow.They prescribe a standard exposing fire ofcontrolled extent and severity
6、.Performance is defined as the period of resistance to standard exposureelapsing before the first critical point in behavior is observed.Results are reported in units in whichfield exposures can be judged and expressed.The test methods may be cited as the“Standard Fire Tests,”and the performance or
7、exposure shallbe expressed as“2-h,”“6-h,”“12-h,”etc.When a factor of safety exceeding that inherent in the test conditions is desired,a proportionalincrease should be made in the specified time-classification period.1.Scope*1.1 The test methods described in this fire-test-responsestandard are applic
8、able to assemblies of masonry units and tocomposite assemblies of structural materials for buildings,including loadbearing and other walls and partitions,columns,girders,beams,slabs,and composite slab and beam assembliesfor floors and roofs.They are also applicable to other assem-blies and structura
9、l units that constitute permanent integralparts of a finished building.1.2 It is the intent that classifications shall register compara-tive performance to specific fire-test conditions during theperiod of exposure and shall not be construed as havingdetermined suitability under other conditions or
10、for use afterfire exposure.1.3 This standard is used to measure and describe theresponse of materials,products,or assemblies to heat andflame under controlled conditions,but does not by itselfincorporate all factors required for fire hazard or fire riskassessment of the materials,products or assembl
11、ies underactual fire conditions.1.4 These test methods prescribe a standard fire exposurefor comparing the test results of building construction assem-blies.The results of these tests are one factor in assessingpredicted fire performance of building construction and assem-blies.Application of these
12、test results to predict the perfor-mance of actual building construction requires the evaluationof test conditions.1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand
13、 are not considered standard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is the1These test methods are under the jurisdiction of ASTM Committee E05 on FireStandards and are the direct responsibility of Subcommittee E05.11 on FireResistanc
14、e.Current edition approved July 1,2015.Published September 2015.Originallyapproved in 1917.Last previous edition approved in 2014 as E119 14.DOI:10.1520/E0119-15.These test methods,of which the present standard represents a revision,wereprepared by Sectional Committee on Fire Tests of Materials and
15、Construction,underthe joint sponsorship of the National Bureau of Standards,the ANSI Fire ProtectionGroup,and ASTM,functioning under the procedure of the American NationalStandards Institute.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor
16、 Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 responsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.7 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.2.Referenced Documents2.1 ASTM Standards:2C569 Tes
