ASTM E2816-20a
(Test Method)Standard Test Methods for Fire Resistive Metallic HVAC Duct Systems
Standard Test Methods for Fire Resistive Metallic HVAC Duct Systems
SIGNIFICANCE AND USE
5.1 These test methods are intended to evaluate the ability of the HVAC duct system and its supporting construction to do the following:
5.1.1 Resist the effects of a standardized fire exposure, and
5.1.2 Retain its integrity.
5.2 These test methods provide for the following measurements and evaluations where applicable:
5.2.1 Ability of the tested support system to carry the load of the HVAC duct and its fire-resistive material(s) during the entire duration of the standardized fire-engulfment test.
5.2.2 Ability of the firestops to meet the requirements of Test Method E814 when used as part of a HVAC duct system.
5.2.3 Ability of the HVAC duct system to resist the passage of flames and hot gases onto its unexposed surface during a standardized fire-resistance test.
5.2.4 Transmission of heat through the HVAC duct system during a standardized fire-resistance test.
5.2.5 Ability of the firestop to resist the passage of water during a standardized hose stream test.
5.3 These test methods do not provide the following:
5.3.1 Full information as to performance of the fire-resistive material, supporting construction, or the HVAC duct system constructed with components, densities, or dimensions other than those tested.
5.3.2 Evaluation of the degree by which the fire-resistive material or HVAC duct system contributes to the fire hazard by generation of 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 HVAC duct system.
5.4 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, these test methods to predict changes to the characteristics measured. Therefore, the results of these laboratory tests are valid only for the exposure conditions described in these test m...
SCOPE
Note 1: Use of the standard designation ISO 6944 refers to both ISO 6944:1985 and ISO 6944-1:2008.
1.1 These test methods evaluate the fire-resistive metallic HVAC duct system’s fire resistance and fire-engulfment with horizontal and vertical through-penetration firestops.
Note 2: The intent of these test methods is to provide authorities having jurisdiction a means to evaluate the fire performance of HVAC duct systems to enable their application and use.
1.2 These test methods evaluate the fire performance of HVAC ducts, including both supply (pressurized: Condition A – Horizontal and Condition B – Vertical) and return (exhaust: Condition C – Horizontal and Condition D – Vertical).
1.3 These test methods evaluate the ability of a HVAC duct system to resist the spread of fire from one compartment to other compartments separated by a fire resistance rated construction when the HVAC duct system is exposed to fire under one or more of the following conditions:
1.3.1 Condition A—Fire exposure from the outside of the horizontal HVAC duct system without openings,
1.3.2 Condition B—Fire exposure from the outside of the vertical HVAC duct system without openings,
1.3.3 Condition C—Fire exposure from the outside with hot gases entering the inside of the horizontal HVAC duct system with unprotected openings,
Note 3: Unprotected openings are openings that are not protected by fire dampers.
1.3.4 Condition D—Fire exposure from the outside with hot gases entering the inside of the vertical HVAC duct system with unprotected openings.
1.4 These test methods provide a means for determining the fire-resistance of vertical and horizontal HVAC duct systems, when subjected to the standard time-temperature curve of Test Methods E119.
1.4.1 Condition A—These test methods provide a means for evaluating a horizontal HVAC duct system, without openings exposed to fire, passing through a vertical fire-separating ele...
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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.
Designation: E2816 − 20a An American National Standard
Standard Test Methods for
1
Fire Resistive Metallic HVAC Duct Systems
This standard is issued under the fixed designation E2816; 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
Heating, Ventilation, Air Conditioning (HVAC) duct systems may be subjected to fire- exposure
conditions. ISO 6944 is a standard test method used to evaluate ventilation ducts. However, ISO 6944
does not address all of the fire resistive attributes deemed necessary by some authorities having
jurisdiction, for example, (1) the transition from the horizontal to a vertical HVAC duct, (2) the
attachment of the HVAC duct’s supports to the fire-separating elements, (3) the termination of an
HVAC duct system and the protection of its ends, (4) the effects of rapid cooling and erosion upon the
HVAC duct system, (5) the use of fire dampers and (6) the effect of the HVAC duct system on its
supporting construction. Many types of fire-resistive materials are used to protect HVAC ducts. These
fire-resistivematerialsareeitherappliedtoHVACductsinthefieldorarefabricatedasanintegralpart
of the HVAC duct system when shipped from the factory. Evaluating fire-resistive materials used to
protect a HVAC duct from fire is an aid for predicting their fire performance and helps to establish
uniformity in requirements of various authorities. To do this it is necessary that the fire-resistance
properties of HVAC ducts protected with fire-resistive materials be measured and specified according
to a common standard expressed in terms that are applicable alike to a wide variety of materials,
situations, and conditions of exposure.
1. Scope* 1.3.1 Condition A—Fire exposure from the outside of the
NOTE 1—Use of the standard designation ISO 6944 refers to both ISO
horizontal HVAC duct system without openings,
6944:1985 and ISO 6944-1:2008.
1.3.2 Condition B—Fire exposure from the outside of the
1.1 These test methods evaluate the fire-resistive metallic vertical HVAC duct system without openings,
HVAC duct system’s fire resistance and fire-engulfment with 1.3.3 Condition C—Fire exposure from the outside with hot
horizontal and vertical through-penetration firestops. gases entering the inside of the horizontal HVAC duct system
NOTE 2—The intent of these test methods is to provide authorities
with unprotected openings,
having jurisdiction a means to evaluate the fire performance of HVAC
NOTE 3—Unprotected openings are openings that are not protected by
duct systems to enable their application and use.
fire dampers.
1.2 These test methods evaluate the fire performance of
1.3.4 Condition D—Fire exposure from the outside with hot
HVAC ducts, including both supply (pressurized: Condition A
gases entering the inside of the vertical HVAC duct system
– Horizontal and Condition B – Vertical) and return (exhaust:
with unprotected openings.
Condition C – Horizontal and Condition D – Vertical).
1.4 These test methods provide a means for determining the
1.3 These test methods evaluate the ability of a HVAC duct
fire-resistance of vertical and horizontal HVAC duct systems,
system to resist the spread of fire from one compartment to
when subjected to the standard time-temperature curve of Test
other compartments separated by a fire resistance rated con-
Methods E119.
struction when the HVAC duct system is exposed to fire under
1.4.1 Condition A—These test methods provide a means for
one or more of the following conditions:
evaluating a horizontal HVAC duct system, without openings
exposed to fire, passing through a vertical fire-separating
1
element.
These test methods are under the jurisdiction ofASTM Committee E05 on Fire
Standards and are the direct responsibility of Subcommittee E05.11 on Fire
1.4.2 Condition B—These test methods provide a means for
Resistance.
evaluating a vertical HVAC duct system, without openings
Current edition approved April 15, 2020. Published May 2020. Originally
exposed to fire and outfitted with a horizontal connection,
approved in 2011. Last previous edition approved in 2020 as E2816 -20. DOI:
10.1520/E2816-20A. passing through a horizontal fire-separating element.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E2816 − 20a
1.4.3 Condition C—These test method
...
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: E2816 − 20 E2816 − 20a An American National Standard
Standard Test Methods for
1
Fire Resistive Metallic HVAC Duct Systems
This standard is issued under the fixed designation E2816; 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
Heating, Ventilation, Air Conditioning (HVAC) duct systems may be subjected to fire- exposure
conditions. ISO 6944 is a standard test method used to evaluate ventilation ducts. However, ISO 6944
does not address all of the fire resistive attributes deemed necessary by some authorities having
jurisdiction, for example, (1) the transition from the horizontal to a vertical HVAC duct, (2) the
attachment of the HVAC duct’s supports to the fire-separating elements, (3) the termination of an
HVAC duct system and the protection of its ends, (4) the effects of rapid cooling and erosion upon the
HVAC duct system, (5) the use of fire dampers and (6) the effect of the HVAC duct system on its
supporting construction. Many types of fire-resistive materials are used to protect HVAC ducts. These
fire-resistive materials are either applied to HVAC ducts in the field or are fabricated as an integral part
of the HVAC duct system when shipped from the factory. Evaluating fire-resistive materials used to
protect a HVAC duct from fire is an aid for predicting their fire performance and helps to establish
uniformity in requirements of various authorities. To do this it is necessary that the fire-resistance
properties of HVAC ducts protected with fire-resistive materials be measured and specified according
to a common standard expressed in terms that are applicable alike to a wide variety of materials,
situations, and conditions of exposure.
1. Scope*
NOTE 1—Use of the standard designation ISO 6944 refers to both ISO 6944:1985 and ISO 6944-1:2008.
1.1 These test methods evaluate the fire-resistive metallic HVAC duct system’s fire resistance and fire-engulfment with
horizontal and vertical through-penetration firestops.
NOTE 2—The intent of these test methods is to provide authorities having jurisdiction a means to evaluate the fire performance of HVAC duct systems
to enable their application and use.
1.2 These test methods evaluate the fire performance of HVAC ducts, including both supply (pressurized: Condition A –
Horizontal and Condition B – Vertical) and return (exhaust: Condition C – Horizontal and Condition D – Vertical).
1.3 These test methods evaluate the ability of a HVAC duct system to resist the spread of fire from one compartment to other
compartments separated by a fire resistance rated construction when the HVAC duct system is exposed to fire under one or more
of the following conditions:
1.3.1 Condition A—Fire exposure from the outside of the horizontal HVAC duct system without openings,
1.3.2 Condition B—Fire exposure from the outside of the vertical HVAC duct system without openings,
1.3.3 Condition C—Fire exposure from the outside with hot gases entering the inside of the horizontal HVAC duct system with
unprotected openings,
NOTE 3—Unprotected openings are openings that are not protected by fire dampers.
1.3.4 Condition D—Fire exposure from the outside with hot gases entering the inside of the vertical HVAC duct system with
unprotected openings.
1.4 These test methods provide a means for determining the fire-resistance of vertical and horizontal HVAC duct systems, when
subjected to the standard time-temperature curve of Test Methods E119.
1
These test methods are under the jurisdiction of ASTM Committee E05 on Fire Standards and are the direct responsibility of Subcommittee E05.11 on Fire Resistance.
Current edition approved March 15, 2020April 15, 2020. Published April 2020May 2020. Originally approved in 2011. Last previous edition approved in 20182020 as
E2816 -18b.-20. DOI: 10.1520/E2816-20.10.1520/E2816-20A.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E2816 − 20a
1.4.1 Condition A—These test methods provide a means for evaluating a horizontal HVAC duct system, without openings
exposed to fire, passing through a vertical fire-separating element.
1.4.2 Condition B—These test methods provide a means for eval
...
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