ASTM E2749-15a
(Practice)Standard Practice for Measuring the Uniformity of Furnace Exposure on Test Specimens
Standard Practice for Measuring the Uniformity of Furnace Exposure on Test Specimens
SIGNIFICANCE AND USE
5.1 This practice describes a procedure to gather data intended to measure the uniformity of exposure conditions upon test specimens for the fire test methods described in Test Methods E119, E814, E1529, E1725, E1966 and E2336. The collected data from furnaces are intended to form a basis for performance requirements for the furnaces described in the referenced standards.
5.2 This practice does not include requirements for furnace performance.
5.3 In this procedure, the standardized test specimen is subjected to one or more specific sets of laboratory test conditions. If different test conditions are substituted or the end-use conditions are changed, it is not always possible by or from this procedure to predict changes in the fire-test-response characteristics measured. Therefore, the results are valid only for the fire-test-exposure conditions described in this procedure.
5.4 The attention of all persons connected with the conduct of this practice is drawn to the fact that fire testing is hazardous and that there is a possibility that harmful smoke and gases are developed during the test. There is also a possibility that mechanical and operational hazards develop during the construction of the test specimen and the disposal of the test residues. An assessment of all potential hazards and risks to health shall be made and safety precautions shall be identified and provided. Written safety instructions shall be issued. Appropriate training shall be provided to relevant personnel. Laboratory personnel shall ensure that they follow written safety instructions at all times.
SCOPE
1.1 This standard provides general principles for measuring the uniformity of the furnace exposure on specimens tested in accordance with Test Methods E119, E814, E1529, E1725, E1966 and E2336.
1.2 This practice specifies the materials and the construction requirements for a standardized test specimen used to provide a mounting surface for the instrumentation that measures furnace exposure.
1.3 The instrumentation records temperatures, pressure differentials and oxygen content near the surface of the test specimen.
1.4 The values stated in SI units are to be regarded as the standard. The units given in parentheses are for information only.
1.5 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.
1.6 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests.
1.7 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.
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Designation: E2749 − 15a An American National Standard
Standard Practice for
Measuring the Uniformity of Furnace Exposure on Test
1
Specimens
This standard is issued under the fixed designation E2749; 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.
1. Scope 2. Referenced Documents
2
1.1 This standard provides general principles for measuring 2.1 ASTM Standards:
the uniformity of the furnace exposure on specimens tested in C1396/C1396M Specification for Gypsum Board
accordance with Test Methods E119, E814, E1529, E1725, E119 Test Methods for Fire Tests of Building Construction
E1966 and E2336. and Materials
E176 Terminology of Fire Standards
1.2 Thispracticespecifiesthematerialsandtheconstruction
E814 Test Method for Fire Tests of Penetration Firestop
requirements for a standardized test specimen used to provide
Systems
a mounting surface for the instrumentation that measures
E1529 Test Methods for Determining Effects of Large Hy-
furnace exposure.
drocarbon Pool Fires on Structural Members and Assem-
1.3 The instrumentation records temperatures, pressure dif-
blies
ferentials and oxygen content near the surface of the test
E1725 Test Methods for Fire Tests of Fire-Resistive Barrier
specimen.
Systems for Electrical System Components
E1966 Test Method for Fire-Resistive Joint Systems
1.4 The values stated in SI units are to be regarded as the
standard. The units given in parentheses are for information E2336 Test Methods for Fire Resistive Grease Duct Enclo-
sure Systems
only.
2.2 ISO Technical Report:
1.5 This standard is used to measure and describe the
ISO/TR 834-2 Fire resistance tests – Elements of building
response of materials, products, or assemblies to heat and
construction – Part 2: Guide on measuring uniformity of
flame under controlled conditions, but does not by itself
furnace exposure on test samples
incorporate all factors required for fire hazard or fire risk
assessment of the materials, products, or assemblies under
3. Terminology
actual fire conditions.
3.1 Definitions—For definitions of terms used in this
1.6 Fire testing is inherently hazardous. Adequate safe-
practice, refer to Terminology E176.
guards for personnel and property shall be employed in
3.2 Definitions of Terms Specific to This Standard:
conducting these tests.
3.2.1 effective area of the furnace opening—furnace open-
1.7 This standard does not purport to address all of the
ing within the boundaries of the monitoring instrumentation.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Summary of Practice
priate safety and health practices and determine the applica-
4.1 This practice consists of preparing a standardized test
bility of regulatory limitations prior to use.
specimen to represent test specimens described in Test Meth-
ods E119, E814, E1529, E1725, E1966 and E2336. The
1
This practice is under the jurisdiction of ASTM Committee E05 on Fire
Standards and is the direct responsibility of Subcommittee E05.11 on Fire
2
Resistance. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
CurrenteditionapprovedJune1,2015.PublishedJuly2015.Originallyapproved contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in 2010. Last previous edition approved in 2015 as E2749-15. DOI:10.1520/E2749- Standards volume information, refer to the standard’s Document Summary page on
15A. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E2749 − 15a
standardized test specimen provides a low cost, easily con-
structed supporting construction for the mounting of instru-
mentation that measures the exposure imposed by the furnace
onto test specimens.
4.2 The standardized test specimen consists of two layers of
5
15.9 mm ( ⁄8 in.) thick Type X gypsum board on the surface
facing the furnace chamber attached to steel channels and a
single layer of structural panels (plywood or oriented strand
board) attached to the steel channels on the surface away from
the furnace chamber. The gypsum board provides a fire-
resistive surface for the mounting of the instrumentation. The
structural panels provide stability for the steel support chan-
nels.
4.3 Instrumentation to measure the thermal impact due to
exposure to the furnace upon the standardized test specimen is
installed at various locations on the exposed surface of the
standardized test specimen. Probes used to gather air samples
within the furnace c
...
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: E2749 − 15 E2749 − 15a An American National Standard
Standard Practice for
Measuring the Uniformity of Furnace Exposure on Test
1
Specimens
This standard is issued under the fixed designation E2749; 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.
1. Scope
1.1 This standard provides general principles for measuring the uniformity of the furnace exposure on specimens tested in
accordance with Test Methods E119, E814, E1529, E1725, E1966 and E2336.
1.2 This practice specifies the materials and the construction requirements for a standardized test specimen used to provide a
mounting surface for the instrumentation that measures furnace exposure.
1.3 The instrumentation records temperatures, pressure differentials and oxygen content near the surface of the test specimen.
1.4 The values stated in SI units are to be regarded as the standard. The units given in parentheses are for information only.
1.5 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.
1.6 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these
tests.
1.7 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C1396/C1396M Specification for Gypsum Board
E119 Test Methods for Fire Tests of Building Construction and Materials
E176 Terminology of Fire Standards
E814 Test Method for Fire Tests of Penetration Firestop Systems
E1529 Test Methods for Determining Effects of Large Hydrocarbon Pool Fires on Structural Members and Assemblies
E1725 Test Methods for Fire Tests of Fire-Resistive Barrier Systems for Electrical System Components
E1966 Test Method for Fire-Resistive Joint Systems
E2336 Test Methods for Fire Resistive Grease Duct Enclosure Systems
2.2 ISO Technical Report:
ISO/TR 834-2 Fire resistance tests – Elements of building construction – Part 2: Guide on measuring uniformity of furnace
exposure on test samples
3. Terminology
3.1 Definitions—For definitions of terms used in this practice, refer to Terminology E176.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 effective area of the furnace opening—furnace opening within the boundaries of the monitoring instrumentation.
1
This practice 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 Jan. 1, 2015June 1, 2015. Published February 2015July 2015. Originally approved in 2010. Last previous edition approved in 20102015 as
E2749-10. DOI:10.1520/E2749-15.-15. DOI:10.1520/E2749-15A.
2
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E2749 − 15a
4. Summary of Practice
4.1 This practice consists of preparing a standardized test specimen to represent test specimens described in Test Methods E119,
E814, E1529, E1725, E1966 and E2336. The standardized test specimen provides a low cost, easily constructed supporting
construction for the mounting of instrumentation that measures the exposure imposed by the furnace onto test specimens.
5
4.2 The standardized test specimen consists of two layers of 15.9 mm ( ⁄8 in.) thick Type X gypsum board on the surface facing
the furnace chamber attached to steel channels and a single layer of structural panels (plywood or oriented strand board) attached
to the steel channels on the surface away from the furnace chamber. The gypsum board provides a fire-resistive surface for the
mounting of the instrumentation.
...
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