1、Designation: E2837 11An American National StandardStandard Test Method forDetermining the Fire Resistance of Continuity Head-of-WallJoint Systems Installed Between Rated Wall Assemblies andNonrated Horizontal Assemblies1This standard is issued under the fixed designation E2837; the number immediatel
2、y following the designation indicates the year oforiginal adoption or, in the case of revision, the year 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.INTRODUCTIONWall conti
3、nuity is required by various model codes at joint openings, which are linear voids, gaps,openings, or other discontinuities between or bounded by a rated wall assembly and nonratedhorizontal assemblies, to ensure that the protected joint opening has the same fire resistance rating asthe rated wall a
4、ssembly. The joint opening at the termination at the top of the rated wall assemblybelow the nonrated horizontal assembly must be protected by a continuity head-of-wall joint system,which has a fire resistance rating, in order to maintain continuity established by the rated wallassembly. This test m
5、ethod is not required when the rated wall assembly contacts nonrated horizontalassemblies when there is no joint opening. Normally such joint openings are denoted as “linear”because the length is normally greater than their width, which is defined by a typical ratio of at least10:1 as in practice. J
6、oint openings are present in buildings as a result of: (1) Design to accommodatevarious movements induced by thermal differentials, seismicity, and wind loads and exists as aclearance separation. (2) Acceptable dimensional tolerances between two or more building elements,for example, between non-loa
7、dbearing walls and roofs. (3) Inadequate design, inaccurate assembly,repairs or damage to the building. There are many unique applications for joint systems in buildings.To address this issue there are different types of continuity head-of-wall joint systems. It is not possibleto test all fire-resis
8、tive joints systems using the same test apparatus or method of test, for example, TestMethod E2307 employs the ISMAtest apparatus.A continuity head-of-wall joint system is a particulartype of fire-resistive joint system that provides fire resistance to prevent passage of fire fromcompartment to comp
9、artment within the building at the joint opening between a rated wall assemblyand a nonrated horizontal assembly.Acontinuity head-of-wall joint system is a unique buildingconstruction detail not addressed by other fire test methods such as Test Method E1966 that tests jointsystems installed between
10、two assemblies that are fire resistance rated.1. Scope1.1 This fire-test-response test method measures the perfor-mance of a unique fire resistive joint system called a continuityhead-of-wall joint system, which is designed to be usedbetween a rated wall assembly and a nonrated horizontalassembly du
11、ring a fire resistance test.1.2 This fire-test-response standard does not measure theperformance of the following:1.2.1 The rated wall assembly, which is already establishedby other test methods, such as Test Method E119,or1.2.2 The nonrated horizontal assembly, which would beestablished by other te
12、st methods such as Test Method E119.NOTE 1Typically, rated wall assemblies obtain a fire resistance ratingafter being tested to Test Method E119, NFPA 251, UL 263, CAN/ULC-S101, or other similar fire resistive test methods.1.3 This fire-test-response standard is not intended to evalu-ate the connect
13、ions between rated wall assemblies and non-rated horizontal assemblies unless part of the continuityhead-of-wall joint system.1This test method is under the jurisdiction of ASTM Committee E05 on FireStandards and is the direct responsibility of Subcommittee E05.11 on FireResistance.Current edition a
14、pproved Dec. 1, 2011. Published December 2011. DOI:10.1520/E2837-11.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.1.4 The fire resistive test end point is the period of timeelapsing before the first performance criteria is reached
15、whenthe continuity head-of-wall joint system is subjected to one oftwo time-temperature fire exposures.1.5 The fire exposure conditions used are either thosespecified by Test Method E119 for testing assemblies tostandard time-temperature exposures or Test Method E1529 fortesting assemblies to rapid-
16、temperature rise fires.1.6 This test method specifies the heating conditions, meth-ods of test, and criteria to establish a fire resistance rating onlyfor a continuity head-of-wall joint system.1.7 Test results establish the performance of continuityhead-of-wall joint systems to maintain continuity
17、of fire resis-tance of the rated wall assembly where the continuity head-of-wall joint system interfaces with a nonrated horizontal assem-bly during the fire-exposure period.1.8 Test results shall not be construed as having determinedthe continuity head-of-wall joint system, nonrated horizontalassem
18、bly and the rated wall assemblys suitability for use afterthat fire exposure.1.9 This test method does not provide quantitative informa-tion about the continuity head-of-wall joint system relative tothe rate of leakage of smoke or gases or both. However, itrequires that such phenomena be documented
19、and reportedwhen describing the general behavior of continuity head-of-wall joint systems during the fire resistive test but is not part ofthe conditions of compliance.1.10 Potentially important factors and fire characteristicsnot addressed by this test method include, but are not limitedto:1.10.1 T
20、he performance of the continuity head-of-wall jointsystem constructed with components other than those tested.1.10.2 The cyclic movement capabilities of continuity head-of-wall joint systems other than the cycling conditions tested.1.11 The values stated in inch-pound units are to be re-garded as st
21、andard. The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.1.12 The text of this standard references notes and footnoteswhich provide explanatory material. These notes and footnotes(excluding those in tables a
22、nd figures) shall not be consideredas requirements of the standard.1.13 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 riskass
23、essment of the materials, products, or assemblies underactual fire conditions.1.14 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 practices and dete
24、rmine the applica-bility of regulatory limitations prior to use.1.15 Fire testing is inherently hazardous. Adequate safe-guards for personnel and property shall be employed inconducting these tests.2. Referenced Documents2.1 ASTM Standards:2E84 Test Method for Surface Burning Characteristics ofBuild
25、ing MaterialsE119 Test Methods for Fire Tests of Building Constructionand MaterialsE176 Terminology of Fire StandardsE631 Terminology of Building ConstructionsE1399 Test Method for Cyclic Movement and Measuringthe Minimum and Maximum Joint Widths of ArchitecturalJoint SystemsE1529 Test Methods for D
26、etermining Effects of LargeHydrocarbon Pool Fires on Structural Members and As-sembliesE1966 Test Method for Fire-Resistive Joint SystemsE2226 Practice for Application of Hose StreamE2307 Test Method for Determining Fire Resistance ofPerimeter Fire Barriers Using Intermediate-Scale, Multi-story Test
27、 Apparatus2.2 Other Documents:NFPA 251 Standard Methods of Tests of Fire Endurance ofBuilding Construction and Materials3UL 263 Fire Tests of Building Construction and Materials4CAN/ULC-S101 Standard Methods of Fire Endurance Testsof Building Construction and Materials43. Terminology3.1 For definiti
28、ons of terms used in this test method andassociated with fire issues, refer to the definitions contained inTerminology E176.3.2 For definitions of term used in this test method andassociated with building issues, refer to the definitions con-tained in Terminology E631.3.3 When there is a conflict be
29、tween Terminology E176 andTerminology E631 definitions, Terminology E176 definitionsshall apply.3.4 Definitions of Terms Specific to This Standard:3.4.1 continuity, nmaintaining the fire resistance rating ofthe rated wall assembly and the protected joint opening to theunderside of the nonrated horiz
30、ontal assembly by use of acontinuity head-of-wall joint system, which achieves the sameor greater fire resistance rating as the rated wall assembly.3.4.1.1 DiscussionThis maintenance is achieved usingmaterials or devices, or both, installed to extend and continuethe fire resistance rating of the wal
31、l assembly to the undersideof the nonrated horizontal assembly above.3.4.2 continuity head-of-wall joint system, nmaterials ordevices, or both, installed to resist the spread of fire for aprescribed period of time through the joint opening between afire-resistance rated wall assembly below and nonra
32、ted hori-zontal assembly above.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 onthe ASTM website.3National Fire Protection Asso
33、ciation, 1 Batterymarch Park, Quincy, MA02269-9101.4Available from Underwriters Laboratories (UL), 2600 N.W. Lake Rd., Camas,WA 98607-8542, http:/.E2837 1123.4.3 joint opening, nthe space between a rated wallassembly and the nonrated horizontal assembly above, whichis either a void space or gap, or
34、which is filled either partiallyor completely by a material, other than the wall material.3.4.4 maximum joint width, nthe greatest width, size, ordistance to which the continuity head-of-wall joint system isspecified to open.3.4.4.1 DiscussionThe maximum joint width equals thenominal joint width plu
35、s the extension of the continuityhead-of-wall joint system from the nominal joint width posi-tion.3.4.5 minimum joint width, nthe narrowest width, size, ordistance to which the continuity head-of-wall joint system isspecified to close.3.4.5.1 DiscussionThe minimum joint width equals thenominal joint
36、 width minus the compression of the continuityhead-of-wall joint system from the nominal joint width posi-tion.3.4.6 movement cycle, nthe change between the minimumjoint width and the maximum joint width of a continuityhead-of-wall joint system.3.4.7 nominal joint width, nthe specified opening width
37、,size, or distance of a joint opening that is selected for testpurposes.3.4.7.1 DiscussionThe nominal joint width is typically thejoint width that exists in the building at the time the continuityhead-of-wall joint system is installed.3.4.8 nonrated horizontal assembly, na ceiling, floor, orroof ass
38、embly that is not fire resistance rated such as deter-mined in accordance with Test Methods E119 or E1529.3.4.9 rated wall assembly, nan interior wall or partitionhaving a period of fire resistance determined in accordancewith Test Methods E119 or E1529.3.4.10 splice, nthe connection or junction wit
39、hin thelength of a test specimen.3.4.11 test assembly, nthe complete assembly of the testspecimen together with its rated wall assembly and nonratedhorizontal assembly.3.4.12 test specimen, na fire-resistive wall continuityhead-of-wall joint system of a specific material(s), design, andwidth.4. Summ
40、ary of Test Method4.1 This test method describes the following test sequenceand procedure:4.1.1 The test specimen, the rated wall assembly and non-rated horizontal assembly shall be conditioned before move-ment cycle testing and fire resistive testing.NOTE 2The movement cycle testing is based on Tes
41、t Method E1399.This test is not designed to address all types of movement. It does howeverprovide some indication of the ability of the test specimen to accommo-date some movement without incurring damage.4.1.2 When the test specimen requires movement capability,which is defined as when the maximum
42、joint width does notequal the minimum joint width, the test specimen shall besubjected to the movement cycle test before being fire resistivetested.4.1.3 When desired, apply a superimposed load to the testassembly.4.1.4 During the fire test, the integrity of the test specimenis determined by use of
43、a cotton pad.4.1.5 After the fire test, subject the test assembly to a hosestream test.5. Significance and Use5.1 This test method evaluates the following under thespecified test conditions:5.1.1 The ability of a test specimen to undergo movementwithout reducing its fire resistance rating, and5.1.2
44、The duration for which a test specimen will contain afire and retain its integrity during a predetermined fire resistivetest exposure.5.2 This test method provides for the following measure-ments and evaluations where applicable:5.2.1 Ability of the test specimen to movement cycle.5.2.2 Ability of t
45、he test specimen to prohibit the passage offlames and hot gases.5.2.3 Transmission of heat through the test specimen.5.2.4 Ability of the test specimen to resist the passage ofwater during a hose stream test.5.3 This test method does not provide the following:5.3.1 Any information about the rated wa
46、ll assembly be-cause its performance has already been determined.5.3.2 Evaluation of the degree by which the test specimencontributes to the fire hazard by generation of smoke, toxicgases, or other products of combustion.5.3.3 Measurement of the degree of control or limitation ofthe passage of smoke
47、 or products of combustion through thetest specimen.5.3.4 Measurement of flame spread over the surface of thetest specimen.NOTE 3The information in 5.3.1-5.3.4 may be determined by othersuitable fire resistive test methods. For example, 5.3.4 may be determinedby Test Method E84.5.4 In this procedure
48、, the test specimens are subjected to oneor more specific tests under laboratory conditions. Whendifferent test conditions are substituted or the end-use condi-tions are changed, it is not always possible by, or from, this testmethod to predict changes to the characteristics measured.Therefore, the
49、results are valid only for the exposure conditionsdescribed in this test method.6. Apparatus6.1 Cycling ApparatusEquipment (or device) capable ofbeing used to induce movement of a test specimen and meetingthe required cyclic rate and number of cycles selected fromTable 1.NOTE 4Terms used for movement are indicative of the cyclic rate inexpansion and contraction of the test specimen and not of the magnitudeor direction of movement.6.2 FurnaceAn enclosed heating system or device ca-pable of controlling a fire to the time-temperature curve in TestMethods
