ASTM F2912-11

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Designation:F2912 −11
Standard Specification for
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Glazing and Glazing Systems Subject to Airblast Loadings
This standard is issued under the fixed designation F2912; 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 F1642 Test Method for Glazing and Glazing Systems Sub-
ject to Airblast Loadings
1.1 This specification covers exterior windows, glazed cur-
IEEE/ASTM SI 10 American National Standard for Metric
tain walls, glazing panels in doors and other glazed protective
Practice
systems used in buildings that may be subjected to intentional
or accidental explosions.
3. Terminology
1.2 This specification addresses only glazing and glazing
3.1 Definitions of Terms Specific to This Standard: Not
systems. This specification does not address the structural
included in Terminology E631.
integrity and functionality of door assemblies. It assumes that
3.1.1 glazing—transparent materials used for windows,
the designer has verified that other structural elements have
doors, or other panels.
been adequately designed to resist the anticipated airblast
pressures.
3.1.2 glazing system—the assembly comprised of the
1.3 This specification is designed for all glazing, glazing glazing, its framing system, and anchorage devices.
systems, and glazing retrofit systems including, but not limited
3.1.3 hazard level—rating assigned to the performance of
to, those fabricated from glass, plastic, glass-clad plastics,
theglazingsystembasedontheamountandlocationofintegral
laminated glass, glass/plastic glazing materials, and organic
materials expelled from the system under specific blast condi-
coated glass.
tions of the test.
1.4 This specification does not determine the assessment of
3.1.4 peak positive pressure (P)—the maximum measured
a facility nor acceptable hazard ratings. Threat and risk
positive phase airblast pressure, kPa (psi).
assessment shall have already been performed and the accept-
3.1.5 positive phase impulse (i)—the integral, over time, of
able hazard rating defined.
the measured positive phase reflected airblast pressure history,
1.5 The values stated in SI units are to be regarded as the
kPa-ms (psi-ms).
standard. Values given in parentheses are for information only.
3.1.5.1 Discussion—The airblast pressure history, whether
For conversion of quantities in various systems of measure-
reflected or otherwise, as measured at a point on the surface,
ments to SI units, see IEEE/ASTM SI 10.
consists of two separate phases. The positive phase for high
1.6 This standard does not purport to address all of the
explosive detonations is characterized by a nearly instanta-
safety concerns, if any, associated with its use. It is the
neous rise to a maximum pressure followed by an exponential
responsibility of the user of this standard to establish appro-
decay to ambient pressure. In the negative phase, which
priate safety and health practices and determine the applica-
immediately follows the positive phase, the pressure decreases
bility of regulatory limitations prior to use.
belowambientforaperiodoftimebeforereturningtoambient.
2. Referenced Documents
4. Classification
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2.1 ASTM Standards:
4.1 The classification of airblast resistant glazing is deter-
E631 Terminology of Building Constructions
mined by the defined blast load and the performance of the
glass or glazing system when subjected to blast testing in
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accordance with Test Method F1642.
This specification is under the jurisdiction of ASTM Committee F12 on
Security Systems and Equipment and is the direct responsibility of Subcommittee
4.1.1 Hazard Levels—The hazard levels are identified and
F12.10 on Systems Products and Services.
described in Table 1.
Current edition approved July 1, 2011. Published August 2011. DOI: 10.1520/
F2912–11.
4.1.2 Specification—Specification shall take into account
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the specified blast loads as defined by pressure (P) and impulse
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
(i) and the corresponding hazard level (H1 through H4) as
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. determined from Table 1.
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F2912−11
TABLE 1 Hazard Levels and Descriptions
Hazard Rating Description Description of Fenestration Glazing Response Hazard Level
The glazing is observed not to fracture and there is no visible damage to the
No Break H1
g
...