ASTM C1392-20
(Guide)Standard Guide for Evaluating Failure of Structural Sealant Glazing
Standard Guide for Evaluating Failure of Structural Sealant Glazing
SIGNIFICANCE AND USE
5.1 This guide suggests a simple means of evaluating the extent of any failure of a structural sealant in an installed structural sealant glazing system.
5.2 A qualified authority should specify the criteria described in Sections 8 and 9 and should interpret the results and judge their significance for the structural sealant glazing system.
5.3 The evaluation program measures deflection of loaded lites and does not measure directly any structural sealant failure. Consequently, the qualified authority interpreting the data should also evaluate the source of any increased deflection that is measured. Increased deflection may be due to structural sealant adhesive or cohesive failure, but may also be due to a decrease in sealant modulus, a change in sealant joint dimensions, or other nonfailure mechanisms. Selective destructive sampling of areas with increased deflections can assist in this evaluation.
SCOPE
1.1 This guide covers a screening approach to detect failure (adhesive or cohesive) of a structural sealant in a structural sealant-glazed window, curtain wall, or other similar system. Presently, only a silicone-sealant that is specifically formulated, tested, and marketed as a structural glazing sealant is allowed for structural sealant glazing.
1.2 The values stated in either acceptable metric units or in other units shall be regarded separately as the standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining values in any way.
1.3 There are no ISO standards similar or equivalent to this ASTM standard.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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.
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Standards Content (Sample)
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: C1392 − 20
Standard Guide for
1
Evaluating Failure of Structural Sealant Glazing
This standard is issued under the fixed designation C1392; 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 adhesive failure; cohesive failure; deflection; glazing; joint;
lite; modulus; silicone sealant; structural sealant; structural
1.1 This guide covers a screening approach to detect failure
sealant glazing; and substrate.
(adhesive or cohesive) of a structural sealant in a structural
3.1.1 qualified authority, n—a person with a recognized
sealant-glazed window, curtain wall, or other similar system.
degree or professional certificate and extensive knowledge and
Presently, only a silicone-sealant that is specifically
formulated, tested, and marketed as a structural glazing sealant experience in the particular fields necessary for the evaluation
is allowed for structural sealant glazing. program.The authority’s qualification level that is necessary to
specify the evaluation criteria and interpret the significance of
1.2 The values stated in either acceptable metric units or in
the results depends upon the level of sophistication of the
other units shall be regarded separately as the standard. The
evaluation program. For example, if statistical and finite
values stated in each system may not be exact equivalents;
element analyses are being incorporated into the evaluation
therefore,eachsystemmustbeusedindependentlyoftheother,
program, then the authority should be knowledgeable and
without combining values in any way.
experienced in these areas.
1.3 There are no ISO standards similar or equivalent to this
3.1.2 competent person, n—a person experienced in the
ASTM standard.
operation of the testing equipment and with an understanding
1.4 This standard does not purport to address all of the
of the construction of the wall system. This person may carry
safety concerns, if any, associated with its use. It is the
out the field testing under the supervision of the qualified
responsibility of the user of this standard to establish appro-
authority.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4. Summary of Guide
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4.1 This guide uses deflection measurements obtained from
ization established in the Decision on Principles for the
localized applied loads to determine locations of sealant failure
Development of International Standards, Guides and Recom-
in an installed structural sealant glazing system.
mendations issued by the World Trade Organization Technical
4.2 Initially, the deflection of an existing lite that is fully
Barriers to Trade (TBT) Committee.
adhered by a structural sealant is measured when a discrete
edge of the lite is loaded laterally. Subsequently, at a few
2. Referenced Documents
2 selected lites, the structural sealant is cut intentionally to
2.1 ASTM Standards:
simulate failure, and the deflection of the lite is measured at the
C717 Terminology of Building Seals and Sealants
same lateral load. This provides the basis for determining
during subsequent tests of other lites in the system whether the
3. Terminology
sealant has failed.
3.1 Definitions: Refer to Terminology C717 for the follow-
ing definitions and description of terms used in this guide: 4.3 Additional lites are evaluated and their deflections
measured to determine the extent of any structural sealant
failure. Structural sealant failure is determined by comparing
1
ThisguideisunderthejurisdictionofASTMCommitteeC24onBuildingSeals
the measured deflections with the initial measurements of
and Sealants and is the direct responsibility of Subcommittee C24.10 on
deflection with and without failed (intentionally cut) sealant.
Specifications, Guides and Practices.
Current edition approved Jan. 1, 2020. Published January 2020. Originally
approved in 1998. Last previous edition approved in 2009 as C1392 – 09(2014).
5. Significance and Use
DOI: 10.1520/C1392-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1 This guide suggests a simple means of evaluating the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
extent of any failure of a structural sealant in an installed
Standards volume information, refer to the standard’s Document Summary page on
the A
...
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: C1392 − 00 (Reapproved 2014) C1392 − 20
Standard Guide for
1
Evaluating Failure of Structural Sealant Glazing
This standard is issued under the fixed designation C1392; 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 guide covers a screening approach to detect failure (adhesive or cohesive) of a structural sealant in a structural
sealant-glazed window, curtain wall, or other similar system. Presently, only a silicone-sealant that is specifically formulated,
tested, and marketed as a structural glazing sealant is allowed for structural sealant glazing.
1.2 The values stated in either acceptable metric units or in other units shall be regarded separately as the standard. The values
stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without
combining values in any way.
1.3 There are no ISO standards similar or equivalent to this ASTM standard.
1.4 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 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
2.1 ASTM Standards:
C717 Terminology of Building Seals and Sealants
3. Terminology
3.1 Definitions: Refer to Terminology C717 for the following definitions and description of terms used in this guide: adhesive
failure; cohesive failure; deflection; glazing; joint; lite; modulus; silicone sealant; structural sealant; structural sealant glazing; and
substrate.
3.1.1 qualified authority, n—a person with a recognized degree or professional certificate and extensive knowledge and
experience in the particular fields necessary for the evaluation program. The authority’s qualification level that is necessary to
specify the evaluation criteria and interpret the significance of the results depends upon the level of sophistication of the evaluation
program. For example, if statistical and finite element analyses are being incorporated into the evaluation program, then the
authority should be knowledgeable and experienced in these areas.
3.1.2 competent person, n—a person experienced in the operation of the testing equipment and with an understanding of the
construction of the wall system. This person may carry out the field testing under the supervision of the qualified authority.
4. Summary of Guide
4.1 This guide uses deflection measurements obtained from localized applied loads to determine locations of sealant failure in
an installed structural sealant glazing system.
4.2 Initially, the deflection of an existing lite that is fully adhered by a structural sealant is measured when a discrete edge of
the lite is loaded laterally. Subsequently, at a few selected lites, the structural sealant is cut intentionally to simulate failure, and
1
This guide is under the jurisdiction of ASTM Committee C24 on Building Seals and Sealants and is the direct responsibility of Subcommittee C24.10 on Specifications,
Guides and Practices.
Current edition approved Jan. 1, 2014Jan. 1, 2020. Published December 2009January 2020. Originally approved in 1998. Last previous edition approved in 2009 as
C1392 – 00C1392 – 09(2009).(2014). DOI: 10.1520/C1392-00R14.10.1520/C1392-20.
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
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C1392 − 20
the deflection of the lite is measured at the same lateral load. This provides the basis for determining during subsequent tests of
other lites in the system whether the sealant has failed.
4.3
...
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