ASTM F1642-03
(Test Method)Standard Test Method for Glazing and Glazing Systems Subject to Airblast Loadings
Standard Test Method for Glazing and Glazing Systems Subject to Airblast Loadings
SCOPE
1.1 This test method sets forth procedures for the evaluation of the resistance of glazing or glazing systems against airblast loadings.
1.2 This test method allows for glazings to be tested with or without framing systems.
1.3 This test method is designed to test all glazings and glazing systems, including those fabricated from glass, plastic, glass-clad plastics, laminated glass, glass/plastic glazing materials, and film-backed glass.
1.4 The values stated in inch-pound units are to be regarded as the standard.
1.5 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. See Section 8 for specific hazards statements.
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Designation: F 1642 – 03
Standard Test Method for
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Glazing and Glazing Systems Subject to Airblast Loadings
This standard is issued under the fixed designation F 1642; 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 (e) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Historical records show that fragments from glazing that has failed as the result of intentional or
accidental explosions present a serious threat of personal injury. Glazing failure also allows blast
pressure to enter the interior of buildings thus resulting in additional threat of personal injury and
facility damage. These risks increase in direct proportion to the amount of glazing used on the building
facade. This test method addresses only glazing and glazing systems. It assumes that the designer has
verified that other structural elements have been adequately designed to resist the anticipated airblast
pressures.
1. Scope E 997 Test Method for Structural Performance of Glass in
Exterior Windows, Curtain Walls, and Doors Under the
1.1 This test method sets forth procedures for the evaluation
Influence of Uniform Static Loads by Destructive Meth-
of hazards of glazing or glazing systems against airblast
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ods
loadings.
SI 10 American National Standard for Use of the Interna-
1.2 This test method allows for glazing to be tested and
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tional System of Units (SI): The Modern Metric System
rated with or without framing systems.
1.3 This test method is designed to test and rate all glazing,
3. Terminology
glazing systems, and glazing retrofit systems including, but not
3.1 Definitions:
limited to, those fabricated from glass, plastic, glass-clad
3.1.1 ambient temperature—24 6 11°C (75 6 20°F).
plastics, laminated glass, glass/plastic glazing materials, and
3.1.2 blast mat—a steel or concrete pad upon which high
film-backed glass.
explosive may be detonated to reduce the incidence of ejecta.
1.4 The values stated in SI units are to be regarded as the
3.1.3 effective positive phase duration (T)—the duration of
standard. Values given in parentheses are for information only.
an idealized triangular positive phase reflected airblast pressure
For conversion of quantities in various systems of measure-
history, having an instantaneous rise to the measured P, with a
ments to SI units, see Practice E 380.
linear decay to ambient, such that the impulse of the idealized
1.5 This standard does not purport to address all of the
pressure history equals i of the measured positive phase
safety concerns, if any, associated with its use. It is the
reflected airblast history.
responsibility of the user of this standard to establish appro-
3.1.3.1 Discussion—The idealized triangular airblast wave
priate safety and health practices and determine the applica-
is considered to provide a reliable standard measure of the
bility of regulatory limitations prior to use. See Section 9 for
positive phase airblast intensity.
specific hazards statements.
3.1.4 glazing—transparent materials used for windows,
2. Referenced Documents doors, or other panels.
3.1.5 glazing system—the assembly comprised of the glaz-
2.1 ASTM Standards:
ing, its framing system, and anchorage devices.
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This test method is under the jurisdiction of ASTM Committee F12 on Security
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Systems and Equipment and is the direct responsibility of Subcommittee F12.10 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Systems Products and Services. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Nov. 1, 2003. Published November 2003. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1995. Last previous edition approved in 1996 as F 1642 – 96. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F1642–03
3.1.6 peak positive pressure (P)—the maximum measured subjected to an airblast loading. Knowing the hazard rating
positive phase reflected airblast pressure, kPa (psi). provides the ability to assess the risk of personal injury and
3.1.7 positive phase impulse (i)—the integral of the mea- facility damage.
sured positive phase reflected airblast pressure history, kPa-ms
5.2 The hazard rating for a glazing or glazing material does
(psi-ms) (more correctly called the specific positive phase
not imply that a single specimen will resist the specific airblast
impulse).
for which it is rated with a probability of 1.0. The probability
3.1.8 reflected airblast pressure—the pressure increase that
th
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