ASTM E2837-13(2017)
(Test Method)Standard Test Method for Determining the Fire Resistance of Continuity Head-of-Wall Joint Systems Installed Between Rated Wall Assemblies and Nonrated Horizontal Assemblies
Standard Test Method for Determining the Fire Resistance of Continuity Head-of-Wall Joint Systems Installed Between Rated Wall Assemblies and Nonrated Horizontal Assemblies
SIGNIFICANCE AND USE
5.1 This test method evaluates the following under the specified test conditions:
5.1.1 The ability of a test specimen to undergo movement without reducing its fire resistance rating, and
5.1.2 The duration for which a test specimen will contain a fire and retain its integrity during a predetermined fire resistive test exposure.
5.2 This test method provides for the following measurements and evaluations where applicable:
5.2.1 Ability of the test specimen to movement cycle.
5.2.2 Ability of the test specimen to prohibit the passage of flames 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 of water during a hose stream test.
5.3 This test method does not provide the following:
5.3.1 Any information about the rated wall assembly because its performance has already been determined.
5.3.2 Evaluation of the degree by which the test specimen contributes to the fire hazard by generation of smoke, toxic gases, or other products of combustion.
5.3.3 Measurement of the degree of control or limitation of the passage of smoke or products of combustion through the test specimen.
5.3.4 Measurement of flame spread over the surface of the test specimen.
Note 3: The information in 5.3.1 – 5.3.4 may be determined by other suitable fire resistive test methods. For example, 5.3.4 may be determined by Test Method E84.
5.4 In this procedure, the test specimens are subjected to one or more specific tests under laboratory conditions. When different test conditions are substituted or the end-use conditions are changed, it is not always possible by, or from, this test method to predict changes to the characteristics measured. Therefore, the results are valid only for the exposure conditions described in this test method.
SCOPE
1.1 This fire-test-response test method measures the performance of a unique fire resistive joint system called a continuity head-of-wall joint system, which is designed to be used between a rated wall assembly and a nonrated horizontal assembly during a fire resistance test.
1.2 This fire-test-response standard does not measure the performance of the following:
1.2.1 The rated wall assembly, which is already established by other test methods, such as Test Method E119, or
1.2.2 The nonrated horizontal assembly, which would be established by other test methods such as Test Method E119.
Note 1: Typically, rated wall assemblies obtain a fire resistance rating after 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 evaluate the connections between rated wall assemblies and nonrated horizontal assemblies unless part of the continuity head-of-wall joint system.
1.4 The fire resistive test end point is the period of time elapsing before the first performance criteria is reached when the continuity head-of-wall joint system is subjected to one of two time-temperature fire exposures.
1.5 The fire exposure conditions used are either those specified by Test Method E119 for testing assemblies to standard time-temperature exposures or Test Method E1529 for testing assemblies to rapid-temperature rise fires.
1.6 This test method specifies the heating conditions, methods of test, and criteria to establish a fire resistance rating only for a continuity head-of-wall joint system.
1.7 Test results establish the performance of continuity head-of-wall joint systems to maintain continuity of fire resistance of the rated wall assembly where the continuity head-of-wall joint system interfaces with a nonrated horizontal assembly during the fire-exposure period.
1.8 Test results shall not be construed as having determined the continuity head-of-wall joint system, nonrated horizontal assembly and the rated wall assembly’s suitability for use after that ...
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Designation: E2837 − 13 (Reapproved 2017) An American National Standard
Standard Test Method for
Determining the Fire Resistance of Continuity Head-of-Wall
Joint Systems Installed Between Rated Wall Assemblies and
Nonrated Horizontal Assemblies
This standard is issued under the fixed designation E2837; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Wall continuity 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 nonrated
horizontal assemblies, to ensure that the protected joint opening has the same fire resistance rating as
the rated wall assembly. The joint opening at the termination at the top of the rated wall assembly
below 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 wall
assembly. This test method is not required when the rated wall assembly contacts nonrated horizontal
assemblies 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 least
10:1 as in practice. Joint openings are present in buildings as a result of: (1) Design to accommodate
various movements induced by thermal differentials, seismicity, and wind loads and exists as a
clearance separation. (2) Acceptable dimensional tolerances between two or more building elements,
for example, between non-loadbearing 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 possible
to test all fire-resistive joints systems using the same test apparatus or method of test, for example, Test
Method E2307 employs the ISMA test apparatus. A continuity head-of-wall joint system is a particular
type of fire-resistive joint system that provides fire resistance to prevent passage of fire from
compartment to compartment within the building at the joint opening between a rated wall assembly
and a nonrated horizontal assembly. A continuity head-of-wall joint system is a unique building
construction detail not addressed by other fire test methods such as Test Method E1966 that tests joint
systems installed between two assemblies that are fire resistance rated.
1. Scope 1.2 This fire-test-response standard does not measure the
performance of the following:
1.1 This fire-test-response test method measures the perfor-
1.2.1 The rated wall assembly, which is already established
mance of a unique fire resistive joint system called a continuity
by other test methods, such as Test Method E119, or
head-of-wall joint system, which is designed to be used
1.2.2 The nonrated horizontal assembly, which would be
between a rated wall assembly and a nonrated horizontal
established by other test methods such as Test Method E119.
assembly during a fire resistance test.
NOTE 1—Typically, rated wall assemblies obtain a fire resistance rating
after being tested to Test Method E119, NFPA 251, UL 263, CAN/ULC-
S101, or other similar fire resistive test methods.
This test method is under the jurisdiction of ASTM Committee E05 on Fire
Standards and is the direct responsibility of Subcommittee E05.11 on Fire
1.3 This fire-test-response standard is not intended to evalu-
Resistance.
ate the connections between rated wall assemblies and non-
Current edition approved April 1, 2017. Published April 2017. Originally
rated horizontal assemblies unless part of the continuity
approved in 2011. Last previous edition approved in 2013 as E2837-13. DOI:
10.1520/E2837-13R17.
head-of-wall joint system.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E2837 − 13 (2017)
1.4 The fire resistive test end point is the period of time 1.16 This international standard was developed in accor-
elapsing before the first performance criteria is reached when dance with internationally recognized principles on standard-
the continuity head-of-wall joint system is subjected to one of ization established in the Decision on Principles for the
two time-temperature fire exposures. Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
1.5 The fire exposure conditions used are either those
Barriers to Trade (TBT) Committee.
specified by Test Method E119 for testing assemblies to
standard time-temperature exposures or Test Method E1529 for
2. Referenced Documents
testing assemblies to rapid-temperature rise fires.
2.1 ASTM Standards:
1.6 This test method specifies the heating conditions, meth-
E84 Test Method for Surface Burning Characteristics of
ods of test, and criteria to establish a fire resistance rating only
Building Materials
for a continuity head-of-wall joint system.
E119 Test Methods for Fire Tests of Building Construction
1.7 Test results establish the performance of continuity
and Materials
head-of-wall joint systems to maintain continuity of fire resis-
E176 Terminology of Fire Standards
tance of the rated wall assembly where the continuity head-of-
E631 Terminology of Building Constructions
wall joint system interfaces with a nonrated horizontal assem-
E814 Test Method for Fire Tests of Penetration Firestop
bly during the fire-exposure period.
Systems
1.8 Test results shall not be construed as having determined
E1399 Test Method for Cyclic Movement and Measuring the
the continuity head-of-wall joint system, nonrated horizontal
Minimum and Maximum Joint Widths of Architectural
assembly and the rated wall assembly’s suitability for use after
Joint Systems
that fire exposure.
E1529 Test Methods for Determining Effects of Large Hy-
drocarbon Pool Fires on Structural Members and Assem-
1.9 This test method does not provide quantitative informa-
blies
tion about the continuity head-of-wall joint system relative to
E1966 Test Method for Fire-Resistive Joint Systems
the rate of leakage of smoke or gases or both. However, it
E2226 Practice for Application of Hose Stream
requires that such phenomena be documented and reported
E2307 Test Method for Determining Fire Resistance of
when describing the general behavior of continuity head-of-
Perimeter Fire Barriers Using Intermediate-Scale, Multi-
wall joint systems during the fire resistive test but is not part of
story Test Apparatus
the conditions of compliance.
2.2 NFPA Standard:
1.10 Potentially important factors and fire characteristics
NFPA 251 Standard Methods of Tests of Fire Endurance of
not addressed by this test method include, but are not limited
Building Construction and Materials
to:
2.3 ISO Standards:
1.10.1 The performance of the continuity head-of-wall joint
ISO 834 Fire resistance tests – Elements of building con-
system constructed with components other than those tested.
struction
1.10.2 The cyclic movement capabilities of continuity head-
ISO 10295-1 Fire tests for building elements and compo-
of-wall joint systems other than the cycling conditions tested.
nents – Fire testing of service installations – Part 1:
1.11 The values stated in inch-pound units are to be re-
Penetration seals
garded as standard. The values given in parentheses are
ISO 10295-2 Fire tests for building elements and compo-
mathematical conversions to SI units that are provided for
nents – Fire testing of service installations – Part 2: Linear
information only and are not considered standard.
joint (gap) seals
1.12 The text of this standard references notes and footnotes
2.4 Underwriters Laboratories Standards:
which provide explanatory material. These notes and footnotes
UL 263 Fire Tests of Building Construction and Materials
(excluding those in tables and figures) shall not be considered
UL 2079 Standard for Tests for fire Resistance of Building
as requirements of the standard.
Joint Systems
1.13 This standard is used to measure and describe the
UL 1479 Standard for Fire Tests of Through-Penetration
response of materials, products, or assemblies to heat and
Firestops
flame under controlled conditions, but does not by itself
CAN/ULC-S101 Standard Methods of Fire Endurance Tests
incorporate all factors required for fire hazard or fire risk
of Building Construction and Materials
assessment of the materials, products, or assemblies under
actual fire conditions.
1.14 This standard does not purport to address all of the For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
safety concerns, if any, associated with its use. It is the
Standards volume information, refer to the standard’s Document Summary page on
responsibility of the user of this standard to establish appro-
the ASTM website.
priate safety and health practices and determine the applica-
National Fire Protection Association, 1 Batterymarch Park, Quincy, MA
02269-9101.
bility of regulatory limitations prior to use.
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
1.15 Fire testing is inherently hazardous. Adequate safe-
4th Floor, New York, NY 10036, http://www.ansi.org.
guards for personnel and property shall be employed in 5
Available from Underwriters Laboratories (UL), 2600 N.W. Lake Rd., Camas,
conducting these tests. WA 98607-8542, http://www.ul.com.
E2837 − 13 (2017)
CAN/ULC-S115 Standard Method of Fire Tests of Firestop 3.4.8 nonrated horizontal assembly, n—a ceiling, floor, or
Systems roof assembly that is not fire resistance rated such as deter-
mined in accordance with Test Methods E119 or E1529.
3. Terminology
3.4.9 rated wall assembly, n—an interior wall or partition
having a period of fire resistance determined in accordance
3.1 For definitions of terms used in this test method and
with Test Methods E119 or E1529.
associated with fire issues, refer to the definitions contained in
Terminology E176.
3.4.10 splice, n—the connection or junction within the
length of a test specimen.
3.2 For definitions of term used in this test method and
associated with building issues, refer to the definitions con- 3.4.11 test assembly, n—the complete assembly of the test
specimen together with its rated wall assembly and nonrated
tained in Terminology E631.
horizontal assembly.
3.3 When there is a conflict between Terminology E176 and
3.4.12 test specimen, n—a fire-resistive wall continuity
Terminology E631 definitions, Terminology E176 definitions
head-of-wall joint system of a specific material(s), design, and
shall apply.
width.
3.4 Definitions of Terms Specific to This Standard:
3.4.1 continuity, n—maintaining the fire resistance rating of
4. Summary of Test Method
the rated wall assembly and the protected joint opening to the
4.1 This test method describes the following test sequence
underside of the nonrated horizontal assembly by use of a
and procedure:
continuity head-of-wall joint system, which achieves the same
4.1.1 The test specimen, the rated wall assembly and non-
or greater fire resistance rating as the rated wall assembly.
rated horizontal assembly shall be conditioned before move-
3.4.1.1 Discussion—This maintenance is achieved using
ment cycle testing and fire resistive testing.
materials or devices, or both, installed to extend and continue
the fire resistance rating of the wall assembly to the underside
NOTE 2—The movement cycle testing is based on Test Method E1399.
of the nonrated horizontal assembly above. This test is not designed to address all types of movement. It does however
provide some indication of the ability of the test specimen to accommo-
3.4.2 continuity head-of-wall joint system, n—materials or
date some movement without incurring damage.
devices, or both, installed to resist the spread of fire for a
4.1.2 When the test specimen requires movement capability,
prescribed period of time through the joint opening between a
which is defined as when the maximum joint width does not
fire-resistance rated wall assembly below and nonrated hori-
equal the minimum joint width, the test specimen shall be
zontal assembly above.
subjected to the movement cycle test before being fire resistive
3.4.3 joint opening, n—the space between a rated wall
tested.
assembly and the nonrated horizontal assembly above, which
4.1.3 When desired, apply a superimposed load to the test
is either a void space or gap, or which is filled either partially
assembly.
or completely by a material, other than the wall material.
4.1.4 During the fire test, the integrity of the test specimen
3.4.4 maximum joint width, n—the greatest width, size, or is determined by use of a cotton pad.
distance to which the continuity head-of-wall joint system is 4.1.5 After the fire test, subject the test assembly to a hose
specified to open. stream test.
3.4.4.1 Discussion—The maximum joint width equals the
5. Significance and Use
nominal joint width plus the extension of the continuity
head-of-wall joint system from the nominal joint width posi-
5.1 This test method evaluates the following under the
tion.
specified test conditions:
3.4.5 minimum joint width, n—the narrowest width, size, or 5.1.1 The ability of a test specimen to undergo movement
distance to which the continuity head-of-wall joint system is without reducing its fire resistance rating, and
specified to close. 5.1.2 The duration for which a test specimen will contain a
fire and retain its integrity during a predetermined fire resistive
3.4.5.1 Discussion—The minimum joint width equals the
nominal joint width minus the compression of the continuity test exposure.
head-of-wall joint system from the nominal joint width posi-
5.2 This test method provides for the following measure-
tion.
ments and evaluations where applicable:
3.4.6 movement cycle, n—the change between the minimum 5.2.1 Ability of the test specimen to movement cycle.
joint width and the maximum joint width of a continuity 5.2.2 Ability of the test specimen to prohibit the passage of
head-of-wall joint system. flames and hot gases.
5.2.3 Transmission of heat through the test specimen.
3.4.7 nominal joint width, n—the specified opening width,
5.2.4 Ability of the test specimen to resist the passage of
size, or distance of a joint opening
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2837 − 13 E2837 − 13 (Reapproved 2017) An American National Standard
Standard Test Method for
Determining the Fire Resistance of Continuity Head-of-Wall
Joint Systems Installed Between Rated Wall Assemblies and
Nonrated Horizontal Assemblies
This standard is issued under the fixed designation E2837; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Wall continuity 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 nonrated
horizontal assemblies, to ensure that the protected joint opening has the same fire resistance rating as
the rated wall assembly. The joint opening at the termination at the top of the rated wall assembly
below 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 wall
assembly. This test method is not required when the rated wall assembly contacts nonrated horizontal
assemblies 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 least
10:1 as in practice. Joint openings are present in buildings as a result of: (1) Design to accommodate
various movements induced by thermal differentials, seismicity, and wind loads and exists as a
clearance separation. (2) Acceptable dimensional tolerances between two or more building elements,
for example, between non-loadbearing 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 possible
to test all fire-resistive joints systems using the same test apparatus or method of test, for example, Test
Method E2307 employs the ISMA test apparatus. A continuity head-of-wall joint system is a particular
type of fire-resistive joint system that provides fire resistance to prevent passage of fire from
compartment to compartment within the building at the joint opening between a rated wall assembly
and a nonrated horizontal assembly. A continuity head-of-wall joint system is a unique building
construction detail not addressed by other fire test methods such as Test Method E1966 that tests joint
systems installed between two assemblies that are fire resistance rated.
1. Scope
1.1 This fire-test-response test method measures the performance of a unique fire resistive joint system called a continuity
head-of-wall joint system, which is designed to be used between a rated wall assembly and a nonrated horizontal assembly during
a fire resistance test.
1.2 This fire-test-response standard does not measure the performance of the following:
1.2.1 The rated wall assembly, which is already established by other test methods, such as Test Method E119, or
1.2.2 The nonrated horizontal assembly, which would be established by other test methods such as Test Method E119.
NOTE 1—Typically, rated wall assemblies obtain a fire resistance rating after 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 evaluate the connections between rated wall assemblies and nonrated
horizontal assemblies unless part of the continuity head-of-wall joint system.
1.4 The fire resistive test end point is the period of time elapsing before the first performance criteria is reached when the
continuity head-of-wall joint system is subjected to one of two time-temperature fire exposures.
This test method is under the jurisdiction of ASTM Committee E05 on Fire Standards and is the direct responsibility of Subcommittee E05.11 on Fire Resistance.
Current edition approved July 15, 2013April 1, 2017. Published August 2013April 2017. Originally approved in 2011. Last previous edition approved in 20112013 as
E2837-11.-13. DOI: 10.1520/E2837-13.10.1520/E2837-13R17.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E2837 − 13 (2017)
1.5 The fire exposure conditions used are either those specified by Test Method E119 for testing assemblies to standard
time-temperature exposures or Test Method E1529 for testing assemblies to rapid-temperature rise fires.
1.6 This test method specifies the heating conditions, methods of test, and criteria to establish a fire resistance rating only for
a continuity head-of-wall joint system.
1.7 Test results establish the performance of continuity head-of-wall joint systems to maintain continuity of fire resistance of the
rated wall assembly where the continuity head-of-wall joint system interfaces with a nonrated horizontal assembly during the
fire-exposure period.
1.8 Test results shall not be construed as having determined the continuity head-of-wall joint system,nonrated horizontal
assembly and the rated wall assembly’s suitability for use after that fire exposure.
1.9 This test method does not provide quantitative information about the continuity head-of-wall joint system relative to the rate
of leakage of smoke or gases or both. However, it requires that such phenomena be documented and reported when describing the
general behavior of continuity head-of-wall joint systems during the fire resistive test but is not part of the conditions of
compliance.
1.10 Potentially important factors and fire characteristics not addressed by this test method include, but are not limited to:
1.10.1 The performance of the continuity head-of-wall joint system 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 regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.12 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the standard.
1.13 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under
controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials,
products, or assemblies under actual fire conditions.
1.14 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
1.15 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these
tests.
1.16 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
E84 Test Method for Surface Burning Characteristics of Building Materials
E119 Test Methods for Fire Tests of Building Construction and Materials
E176 Terminology of Fire Standards
E631 Terminology of Building Constructions
E814 Test Method for Fire Tests of Penetration Firestop Systems
E1399 Test Method for Cyclic Movement and Measuring the Minimum and Maximum Joint Widths of Architectural Joint
Systems
E1529 Test Methods for Determining Effects of Large Hydrocarbon Pool Fires on Structural Members and Assemblies
E1966 Test Method for Fire-Resistive Joint Systems
E2226 Practice for Application of Hose Stream
E2307 Test Method for Determining Fire Resistance of Perimeter Fire Barriers Using Intermediate-Scale, Multi-story Test
Apparatus
2.2 NFPA Standard:
NFPA 251 Standard Methods of Tests of Fire Endurance of Building Construction and Materials
2.3 ISO Standards:
ISO 834 Fire resistance tests – Elements of building construction
ISO 10295-1 Fire tests for building elements and components – Fire testing of service installations – Part 1: Penetration seals
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269-9101.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
E2837 − 13 (2017)
ISO 10295-2 Fire tests for building elements and components – Fire testing of service installations – Part 2: Linear joint (gap)
seals
2.4 Underwriters Laboratories Standards:
UL 263 Fire Tests of Building Construction and Materials
UL 2079 Standard for Tests for fire Resistance of Building Joint Systems
UL 1479 Standard for Fire Tests of Through-Penetration Firestops
CAN/ULC-S101 Standard Methods of Fire Endurance Tests of Building Construction and Materials
CAN/ULC-S115 Standard Method of Fire Tests of Firestop Systems
3. Terminology
3.1 For definitions of terms used in this test method and associated with fire issues, refer to the definitions contained in
Terminology E176.
3.2 For definitions of term used in this test method and associated with building issues, refer to the definitions contained in
Terminology E631.
3.3 When there is a conflict between Terminology E176 and Terminology E631 definitions, Terminology E176 definitions shall
apply.
3.4 Definitions of Terms Specific to This Standard:
3.4.1 continuity, n—maintaining the fire resistance rating of the rated wall assembly and the protected joint opening to the
underside of the nonrated horizontal assembly by use of a continuity head-of-wall joint system, which achieves the same or greater
fire resistance rating as the rated wall assembly.
Available from Underwriters Laboratories (UL), 2600 N.W. Lake Rd., Camas, WA 98607-8542, http://www.ul.com.
3.4.1.1 Discussion—
This maintenance is achieved using materials or devices, or both, installed to extend and continue the fire resistance rating of the
wall assembly to the underside of the nonrated horizontal assembly above.
3.4.2 continuity head-of-wall joint system, n—materials or devices, or both, installed to resist the spread of fire for a prescribed
period of time through the joint opening between a fire-resistance rated wall assembly below and nonrated horizontal assembly
above.
3.4.3 joint opening, n—the space between a rated wall assembly and the nonrated horizontal assembly above, which is either
a void space or gap, or which is filled either partially or completely by a material, other than the wall material.
3.4.4 maximum joint width, n—the greatest width, size, or distance to which the continuity head-of-wall joint system is specified
to open.
3.4.4.1 Discussion—
The maximum joint width equals the nominal joint width plus the extension of the continuity head-of-wall joint system from the
nominal joint width position.
3.4.5 minimum joint width, n—the narrowest width, size, or distance to which the continuity head-of-wall joint system is
specified to close.
3.4.5.1 Discussion—
The minimum joint width equals the nominal joint width minus the compression of the continuity head-of-wall joint system from
the nominal joint width position.
3.4.6 movement cycle, n—the change between the minimum joint width and the maximum joint width of a continuity
head-of-wall joint system.
3.4.7 nominal joint width, n—the specified opening width, size, or distance of a joint opening that is selected for test purposes.
3.4.7.1 Discussion—
The nominal joint width is typically the joint width that exists in the building at the time the continuity head-of-wall joint system
is installed.
E2837 − 13 (2017)
3.4.8 nonrated horizontal assembly, n—a ceiling, floor, or roof assembly that is not fire resistance rated such as determined in
accordance with Test Methods E119 or E1529.
3.4.9 rated wall assembly, n—an interior wall or partition having a period of fire resistance determined in accordance with Test
Methods E119 or E1529.
3.4.10 splice, n—the connection or junction within the length of a test specimen.
3.4.11 test assembly, n—the complete assembly of the test specimen together with its rated wall assembly and nonrated
horizontal assembly.
3.4.12 test specimen, n—a fire-resistive wall continuity head-of-wall joint system of a specific material(s), design, and width.
4. Summary of Test Method
4.1 This test method describes the following test sequence and procedure:
4.1.1 The test specimen, the rated wall assembly and nonrated horizontal assembly shall be conditioned before movement cycle
testing and fire resistive testing.
NOTE 2—The movement cycle testing is based on Test Method E1399. This test is not designed to address all types of movement. It does however
provide some indication of the ability of the test specimen to accommodate some movement without incurring damage.
4.1.2 When the test specimen requires movement capability, which is defined as when the maximum joint width does not equal
the minimum joint width, the test specimen shall be subjected to the movement cycle test before being fire resistive tested.
4.1.3 When desired, apply a superimposed load to the test assembly.
4.1.4 During the fire test, the integrity of the test specimen is determined by use of a cotton pad.
4.1.5 After the fire test, subject the test assembly to a hose stream test.
5. Significance and Use
5.1 This test method evaluates the following under the specified test conditions:
5.1.1 The ability of a test specimen to undergo movement without reducing its fire resistance rating,
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