1、Designation:E274812aAn American National StandardStandard Guide forFire-Resistance Experiments1This standard is issued under the fixed designation E2748;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numb
2、er in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis guide provides a means for ensuring comparability of findings among different researchersconducting fire-resistance experiments employing
3、 innovative and creative variations to standard testmethods.This guide is intended to bring uniformity and consistency to tests and reports coveringfire-resistance research that is generally conducted as a variation of Test Methods E119.Its provisionsare voluntary and users are free to pick and choo
4、se from the provisions herein provided.Theoverriding goal is to make it possible to begin to provide data that ultimately can be used in fire safetyengineering and fire-resistance modeling as those fields evolve.When the purpose of the research isto study the effect of changing specific individual v
5、ariables on the outcome of Test Methods E119fire-resistance tests,sound research practices dictate that only one variable should be changed at atime.1.Scope1.1 This guide covers the conduct of fire-resistance testsusing conditions different than those addressed in Test MethodsE119.This guide also ad
6、dresses the reporting of data derivedfrom those tests.1.2 This guide does not provide or generate fire-resistanceratings suitable for determining compliance with code orregulatory requirements comparable to those resulting fromtests conducted in accordance with Test Methods E119.1.3 The values state
7、d in SI units are to be regarded asstandard.The values in parentheses are for information only.1.4 This guide is used to measure and describe the responseof materials,products,or assemblies to heat and flame undercontrolled conditions,but does not by itself incorporate allfactors required for fire h
8、azard or fire risk assessment of thematerials,products,or assemblies under actual fire conditions.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health pr
9、actices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E119 Test Methods for Fire Tests of Building Constructionand MaterialsE176 Terminology of Fire StandardsE603 Guide for Room Fire ExperimentsE1529 Test Methods for Determining Eff
10、ects of Large Hy-drocarbon Pool Fires on Structural Members and Assem-blies2.2 Other Standards:ISO 834-1 Fire Resistance Tests Elements of BuildingConstruction Part 1:General Requirements3NFPA 251 Standard Methods of Tests of Fire Resistance ofBuilding Construction and Materials43.Terminology3.1 For
11、 definitions of terms used in this guide,refer toTerminology E176.1This guide is under the jurisdiction ofASTM Committee E05 on Fire Standardsand is the direct responsibility of Subcommittee E05.11 on Fire Resistance.Current edition approved Nov.1,2012.Published November 2012.Originallyapproved in 2
12、010 as E274810.Last previous edition approved in 2012 asE274812.DOI:10.1520/E2748-12A.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page
13、 onthe ASTM website.3Available from International Organization for Standardization,P.O.Box 56,CH-1211,Geneva 20,Switzerland.4Available from National Fire Protection Association(NFPA),1 BatterymarchPark,Quincy,MA 02169-7471,http:/www.nfpa.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box
14、C700,West Conshohocken,PA 19428-2959.United States1 4.Significance and Use4.1 The methods and procedures set forth in this guide relateto the conduct and reporting of fire-resistance tests obtainedfrom particular fire-resistance tested specimens tested usingconditions different than those addressed
15、by Test MethodsE119.4.2 Data derived from fire tests conducted and reportedunder this guide are useful for general fire research and aspotential input data for use in fire models.4.3 It is necessary that users of this guide have knowledgeand understanding of the provisions of Test Methods E119,inclu
16、ding those pertaining to conditions of acceptance in orderto understand how the alternative test conditions relate to thosespecified in Test Methods E119.4.4 Users of this guide should be aware that tests conductedusing exposure conditions different than those specified in TestMethods E119 do not provide or generate fire resistance ratingssuitable for determining compliance with code or regulatoryrequirements.4.4.1 In Test Methods E119,standard test specimens aresubjected to specific exposure co