ASTM F2247-11(2017)
(Test Method)Standard Test Method for Metal Doors Used in Blast Resistant Applications (Equivalent Static Load Method)
Standard Test Method for Metal Doors Used in Blast Resistant Applications (Equivalent Static Load Method)
SIGNIFICANCE AND USE
5.1 Blast resistant doors are designed to protect against the problems and dangers created by a planned or accidental explosion or pressure leak. This test method will provide reasonable assurance to the specifier of the reliability of a door's structure, the restraining hardware, the frame, and the frame anchors when used in a blast resistant application.
SCOPE
1.1 This test method covers the structural performance of metal doors and frames and their restraining hardware (such as latches and hinges) used as a blast resistant barrier. This method involves applying an equivalent static pressure based on the characteristics of the specified blast pressure and structural properties of the door panel design.
1.2 The static tests are valid for the unit size tested or for smaller units of analogous construction. Extrapolation of test results for units larger than the test specimen are not permitted.
1.3 This standard test method is not applicable to tests where the forces are created by explosive charges, forced air from a shock tube apparatus, or any other method used to generate a dynamic load.
1.4 The proper use of this method requires knowledge of the principles of pressure, deflection, and when applicable, strain gauge measurement.
1.5 Using this method, specimens may be tested to determine ultimate static capacity or tested to specific static test loads.
1.5.1 Procedure A shall be used when a load-deflection curve is not required and a single load is applied.
1.5.2 Procedure B shall be used when a load-deflection curve is required and a single or multiple loads are applied.
1.6 The values stated in SI units are to be regarded as the standard. The values provided in parenthesis are for information only.
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: F2247 − 11 (Reapproved 2017)
Standard Test Method for
Metal Doors Used in Blast Resistant Applications
(Equivalent Static Load Method)
This standard is issued under the fixed designation F2247; 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
1.1 This test method covers the structural performance of 2.1 ASTM Standards:
E330/E330M Test Method for Structural Performance of
metal doors and frames and their restraining hardware (such as
latches and hinges) used as a blast resistant barrier. This Exterior Windows, Doors, Skylights and Curtain Walls by
method involves applying an equivalent static pressure based Uniform Static Air Pressure Difference
on the characteristics of the specified blast pressure and
2.2 Other Standard:
structural properties of the door panel design.
UFC 3-340-02 Unified Facilities Criteria (UFC), Structures
to Resist the Effects of Accidental Explosions
1.2 The static tests are valid for the unit size tested or for
smaller units of analogous construction. Extrapolation of test
3. Terminology
results for units larger than the test specimen are not permitted.
3.1 Definitions:
1.3 This standard test method is not applicable to tests
3.1.1 metal door—a term used in reference to doors which
where the forces are created by explosive charges, forced air
are built from steel sheets, internally stiffened with cold-
from a shock tube apparatus, or any other method used to
formed shapes or structural steel shapes. Materials can be
generate a dynamic load.
carbon or stainless steel. The materials may be joined together
1.4 Theproperuseofthismethodrequiresknowledgeofthe
by any fabrication technique (that is, welding, bolting, struc-
principles of pressure, deflection, and when applicable, strain
tural adhesive, etc.). The material voids may be filled with
gauge measurement.
insulation.
1.5 Using this method, specimens may be tested to deter-
3.1.2 permanent deformation—the permanent displacement
mine ultimate static capacity or tested to specific static test
from an original position that remains after an applied load has
loads.
been removed. Measured in millimetres (mm) (inches (in.)).
1.5.1 Procedure A shall be used when a load-deflection
3.1.3 rebound—stress reversal in the material of the door.
curve is not required and a single load is applied.
3.1.4 seating pressure—an applied pressure that causes the
1.5.2 Procedure B shall be used when a load-deflection
door panel to seat against the frame that is expressed in pascals
curve is required and a single or multiple loads are applied.
(Pa) (pounds-force per square foot (psf) or pounds-force per
1.6 The values stated in SI units are to be regarded as the
square inch (psi)).
standard. The values provided in parenthesis are for informa-
3.1.5 specifier—individual or party requesting that a metal
tion only.
door assembly meet specific blast resistance criteria.
1.7 This standard does not purport to address all of the
3.1.6 specimen—the entire assembly unit submitted for test
safety concerns, if any, associated with its use. It is the
as described in Section 6.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 3.1.7 steady state pressure—a test pressure held for a
bility of regulatory limitations prior to use. minimum of 3 min.
1 2
This test method is under the jurisdiction ofASTM Committee F12 on Security For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Systems and Equipment and is the direct responsibility of Subcommittee F12.10 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Systems Products and Services. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved March 1, 2017. Published March 2017. Originally the ASTM website.
approved in 2003. Last previous edition approved in 2011 as F2247 – 11. DOI: Available from National Institute of Building Sciences, 1090 VermontAvenue,
10.1520/F2247-11R17. NW, Suite 700, Washington, DC 20005, http://www.wbdg.org/index.php.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2247 − 11 (2017)
3.1.8 test director—the individual identified as being re- installation. The door frame will be attached to the test fixture
sponsible to complete the specified tests as required and to using the same quantity, size, and spacing of fasteners or
document the results. anchors that the specifier or door manufacturer intends to use
in the actual door installation.
3.1.9 test load—the specified static pressure differential
(positive or negative) for which the specimen is to be tested,
7. Apparatus
expressedinpascals(Pa)(pounds-forcepersquarefoot(psf)or
pounds-force per square inch (psi)). 7.1 Equipment capable of performing the test procedure
described in this standard within the allowable tolerances is
3.1.10 ultimate load—the pressure (positive or negative) at
acceptable. Figs. 1-4 are examples of apparatus layout.
which failure of the specimen occurs expressed in Pa (psf or
psi). 7.2 Major Components:
7.2.1 Test Chamber—A chamber or box with an opening
3.1.11 unseating pressure—an applied pressure that tends
and a removable mounting panel, into which the specimen is
the door panel to unseat from the frame so that the door
installed.Atleastonepressuretapshallbeprovidedtomeasure
reactions must be resisted by the restraining hardware, that is
the chamber pressure and shall be so located that the reading is
expressedinpascals(Pa)(pounds-forcepersquarefoot(psf)or
unaffected by the velocity of the fluid supply to or from the
pounds-force per square inch (psi)).
chamber or any other fluid movement. A means of access is
permitted to be provided to facilitate adjustments and obser-
4. Summary of Test Method
vations after the specimen is installed. The test chamber must
4.1 This test method consists of sealing the test specimen
not deflect under the test load in such a manner that the
into or against one face of a test chamber, supplying air to the
performance of the specimen will be affected.
chamber at a ratio required to maintain the test pressure
7.2.2 Air System—A controllable blower or a compressed
difference across the specimen, and observing, measuring, and
air supply, designed to provide the required air-pressure
recording the deflection, deformations, stresses (if recorded),
difference across the specimen. The system shall provide a
and nature of any failures of principal or critical members or
constant air pressure difference for the duration of the test.
the entire specimen.
7.2.3 Combined Air/Water System—A combined air and
water (fluid) system (See Fig. 1).
5. Significance and Use
7.2.4 Pressure-Measuring Apparatus—A device to measure
5.1 Blast resistant doors are designed to protect against the
the test pressure difference with accuracy of 62 % of the
problems and dangers created by a planned or accidental
reading over the full range of test pressures.
explosion or pressure leak. This test method will provide
7.2.5 Deflection-Measuring System—Ameans of measuring
reasonable assurance to the specifier of the reliability of a
deflections with an accuracy of 60.25 mm (60.01 in.).
door’s structure, the restraining hardware, the frame, and the
7.2.5.1 For Procedure A (see 10.2), any locations at which
frame anchors when used in a blast resistant application.
deflections are to be measured shall be stated by the Specifier
or the Test Director. See Figs. 2 and 3 for suggested locations.
6. Specimen Preparation
7.2.5.2 For Procedure B (see 10.3), any locations at which
deflections are to be measured shall be stated by the Specifier
6.1 Construction—The door panel shall meet the general
or the Test Director. See Figs. 2 and 3 for suggested locations.
definition of a metal door as outlined in 3.1.1. The test method
7.2.5.3 Deflection measurements shall be independent of
isgeneralanddoesnotlimitthedoormanufacturertoaspecific
movements of, or movements within, the specimen or member
door panel construction or fabrication process. Ultimately, the
supports.
designofthedoorpanelisbaseduponthetargetpressurerating
7.2.6 If desired, strain gauges to measure strain shall be
established by the specifier or door manufacturer.
mounted on the side of the door panel in tension. Strain gauges
6.1.1 The size of the specimen (door panel and frame) shall
are attached to the tension side of the door panel. They are to
be representative or larger than the application under investi-
bemountedinaccordancewiththestraingaugemanufacturer’s
gation.
instructions.
6.1.2 Configuration and spacing of the door panel’s internal
7.2.6.1 The location of the gauges are to be determined by
stiffeners will be as designed by the specifier or the door
the specifier or the door manufacturer and they shall be placed
manufacturer. Space between stiffeners may be filled with
where the greatest changes in strain are anticipated, typically at
insulation.
the points of greatest flexure. See Figs. 2 and 3 for suggested
6.1.3 The typical door panel shall be considered as a three
locations.
side supported, one edge free loading condition for a seating
load case. Generally, the bottom edge of the door panel is free
8. Hazards
(no structural threshold). If the door assembly does have a
structuralthreshold,thedoorpanelmaybeconsideredasafour 8.1 Proper care must be taken for the possibility of a failure.
sidesupportedconditionforaseatingloadcase.Thedoorpanel The system used in this test method contains considerable
is supported by the restraining hardware during the unseating stored energy and constitutes a hazard. The testing apparatus
loadcase.Thedoorpanelwillbeattachedtotheframewiththe shall be equipped with a method to restrain the specimen in the
same quantity and size of hinge fasteners that the specifier or event of failure. The restraint method shall not interfere with
the door manufacturer intends to use in the actual door the test nor the results of the test.
F2247 − 11 (2017)
FIG. 1 Schematic of Test Arrangement
9. Calibration ambient pressure. See Annex A1 for example of converting a
dynamic pressure into an equivalent static load.
9.1 Pressure Gage, deflection-measuring devices, and strain
10.2.3 The permitted damage level category in accordance
gauges shall be calibrated prior to testing to make certain the
with Section 11.
devices are within specifications and requirements (see 7.2.4
10.2.4 The number and location of deflection and, if
and7.2.5).Calibrationoftestequipmentshallbeinaccordance
applicable, strain gages.
with the manufacturer’s recommendations and to a national
recognized standard.
10.3 Procedure B—Single or Multiple Loading with Deflec-
tion Curve:
10. Required Information
10.3.1 Same as 10.2.1 – 10.2.4, additionally:
10.3.2 The number of load cycles at which deflection and
10.1 The following information shall be supplied by the
stress-strain measurements are required.
specifier:
10.3.3 The number and location of required deflection and
10.2 Procedure A—Single Loading with no Deflection
strain gages (if desired).
Curve:
10.2.1 Performance criteria and the number and gage loca-
11. Acceptance Criteria
tion.
10.2.2 The blast duration defined as the time interval 11.1 Acceptance of the door is based on the end use of the
between time of arrival of the blast wave at a given location door. The door is classified into one of four damage level
and the time for the magnitude of the pressure to return to categories. The criterion and acceptance for each category is:
F2247 − 11 (2017)
FIG. 2 Test Fixture Elevation—Unseating Load Case
11.1.1 Category I—The specimen is unchanged (no perma- (1) After the specimen has been unloaded, verify that the
nent deformation) after the loading incident and the door is deflection gages have returned to zero reading with a tolerance
fully operable. The specimen remains intact and responds of +2 mm ( ⁄64 in.).
elastically. (2) Verify that the door is operable by unlatching the door
11.1.1.1 Acceptance: and swinging the panel.
F2247 − 11 (2017)
FIG. 3 Test Fixture Elevation—Seating Load Case
(3) If strain gages are used, check that the recorded stresses (5) Verify that the external portions of the latch and hinges
are within acceptable limits of door material. have not suffered any permanent set.
(4) Verify that the door can be latched.
F2247 − 11 (2017)
FIG. 4 Horizontal Section—Unseating Load Case
11.1.2 Category II—The door is operable but measurable; providing a barrier to blast wave propagation. However, the
permanent deformation to the door panel exceeding the toler- specimen is permanently deformed and the door panel is
ance listed in 11.1.1.1 has been experienced. The specimen
inoperable.
remains as an integral system.
11.1.3.1 Acceptance:
11.1.2.1 Acceptance:
(1) After the specimen has been unloaded, verify that the
(1) After the specimen has been unloaded, verify that the
measurable deformation is acceptable to the end use of the
measurable deformation is acceptable to the end use of the
door.
door.
(2) Verify that the specimen remains an integral system.
(2) Verify that the specimen remains an integral system.
11.1.4 Category IV—The door panel is severely deformed.
(3) If strain gages are used, check that the recorded stresses
For a seating load test, the deformation of the door panel must
are within acceptable limits of door material.
be limited to a level that does not cause the door panel to be
(4) Verify that the door is operable by unlatching the door
forced through the door frame opening. For an unseating load
and swinging the panel.
test, the latching mechanism is permitted to fail, allowing the
11.1.3 Category III—Non-catastrophicfailure.Nostructural
failure occurs to the specimen that prevents the specimen from door to swing open; however, the door panel shall remain
F2247 − 11 (2017)
supported by the hinges and it is evident that the door panel 12.4 Procedure B—Use Procedure B when a load-deflection
will not become a flying debris hazard. curve is required:
11.1.4.1 Acceptance: 12.4.1 Follow 12.3.1 and 12.3.2.
(1) After the specimen has been unloaded, verify that the
12.4.2 Apply the load in the number of increment
...
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: F2247 − 11 F2247 − 11 (Reapproved 2017)
Standard Test Method for
Metal Doors Used in Blast Resistant Applications
(Equivalent Static Load Method)
This standard is issued under the fixed designation F2247; 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 test method covers the structural performance of metal doors and frames and their restraining hardware (such as latches
and hinges) used as a blast resistant barrier. This method involves applying an equivalent static pressure based on the characteristics
of the specified blast pressure and structural properties of the door panel design.
1.2 The static tests are valid for the unit size tested or for smaller units of analogous construction. Extrapolation of test results
for units larger than the test specimen are not permitted.
1.3 This standard test method is not applicable to tests where the forces are created by explosive charges, forced air from a shock
tube apparatus, or any other method used to generate a dynamic load.
1.4 The proper use of this method requires knowledge of the principles of pressure, deflection, and when applicable, strain
gauge measurement.
1.5 Using this method, specimens may be tested to determine ultimate static capacity or tested to specific static test loads.
1.5.1 Procedure A shall be used when a load-deflection curve is not required and a single load is applied.
1.5.2 Procedure B shall be used when a load-deflection curve is required and a single or multiple loads are applied.
1.6 The values stated in SI units are to be regarded as the standard. The values provided in parenthesis are for information only.
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
2.1 ASTM Standards:
E330E330/E330M Test Method for Structural Performance of Exterior Windows, Doors, Skylights and Curtain Walls by
Uniform Static Air Pressure Difference
2.2 Other Standard:
UFC 3-340-02 Unified Facilities Criteria (UFC), Structures to Resist the Effects of Accidental Explosions
3. Terminology
3.1 Definitions:
3.1.1 metal door—a term used in reference to doors which are built from steel sheets, internally stiffened with cold-formed
shapes or structural steel shapes. Materials can be carbon or stainless steel. The materials may be joined together by any fabrication
technique (that is, welding, bolting, structural adhesive, etc.). The material voids may be filled with insulation.
3.1.2 permanent deformation—the permanent displacement from an original position that remains after an applied load has been
removed. Measured in millimetres (mm) (inches (in.)).
3.1.3 rebound—stress reversal in the material of the door.
This test method is under the jurisdiction of ASTM Committee F12 on Security Systems and Equipment and is the direct responsibility of Subcommittee F12.10 on
Systems Products and Services.
Current edition approved March 1, 2011March 1, 2017. Published April 2011March 2017. Originally approved in 2003. Last previous edition approved in 20102011 as
F2247 – 03 (2010).F2247 – 11. DOI: 10.1520/F2247-11.10.1520/F2247-11R17.
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.
Available from National Institute of Building Sciences, 1090 Vermont Avenue, NW, Suite 700, Washington, DC 20005, http://www.wbdg.org/index.php.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2247 − 11 (2017)
3.1.4 seating pressure—an applied pressure that causes the door panel to seat against the frame that is expressed in pascals (Pa)
(pounds-force per square foot (psf) or pounds-force per square inch (psi)).
3.1.5 specifier—individual or party requesting that a metal door assembly meet specific blast resistance criteria.
3.1.6 specimen—the entire assembly unit submitted for test as described in Section 6.
3.1.7 steady state pressure—a test pressure held for a minimum of 3 min.
3.1.8 test director—the individual identified as being responsible to complete the specified tests as required and to document
the results.
3.1.9 test load—the specified static pressure differential (positive or negative) for which the specimen is to be tested, expressed
in pascals (Pa) (pounds-force per square foot (psf) or pounds-force per square inch (psi)).
3.1.10 ultimate load—the pressure (positive or negative) at which failure of the specimen occurs expressed in Pa (psf or psi).
3.1.11 unseating pressure—an applied pressure that tends the door panel to unseat from the frame so that the door reactions must
be resisted by the restraining hardware, that is expressed in pascals (Pa) (pounds-force per square foot (psf) or pounds-force per
square inch (psi)).
4. Summary of Test Method
4.1 This test method consists of sealing the test specimen into or against one face of a test chamber, supplying air to the chamber
at a ratio required to maintain the test pressure difference across the specimen, and observing, measuring, and recording the
deflection, deformations, stresses (if recorded), and nature of any failures of principal or critical members or the entire specimen.
5. Significance and Use
5.1 Blast resistant doors are designed to protect against the problems and dangers created by a planned or accidental explosion
or pressure leak. This test method will provide reasonable assurance to the specifier of the reliability of a door’s structure, the
restraining hardware, the frame, and the frame anchors when used in a blast resistant application.
6. Specimen Preparation
6.1 Construction—The door panel shall meet the general definition of a metal door as outlined in 3.1.1. The test method is
general and does not limit the door manufacturer to a specific door panel construction or fabrication process. Ultimately, the design
of the door panel is based upon the target pressure rating established by the specifier or door manufacturer.
6.1.1 The size of the specimen (door panel and frame) shall be representative or larger than the application under investigation.
6.1.2 Configuration and spacing of the door panel’s internal stiffeners will be as designed by the specifier or the door
manufacturer. Space between stiffeners may be filled with insulation.
6.1.3 The typical door panel shall be considered as a three side supported, one edge free loading condition for a seating load
case. Generally, the bottom edge of the door panel is free (no structural threshold). If the door assembly does have a structural
threshold, the door panel may be considered as a four side supported condition for a seating load case. The door panel is supported
by the restraining hardware during the unseating load case. The door panel will be attached to the frame with the same quantity
and size of hinge fasteners that the specifier or the door manufacturer intends to use in the actual door installation. The door frame
will be attached to the test fixture using the same quantity, size, and spacing of fasteners or anchors that the specifier or door
manufacturer intends to use in the actual door installation.
7. Apparatus
7.1 Equipment capable of performing the test procedure described in this standard within the allowable tolerances is acceptable.
FiguresFigs. 1-4 1 through 4 are examples of apparatus layout.
7.2 Major Components:
7.2.1 Test Chamber—A chamber or box with an opening and a removable mounting panel, into which the specimen is installed.
At least one pressure tap shall be provided to measure the chamber pressure and shall be so located that the reading is unaffected
by the velocity of the fluid supply to or from the chamber or any other fluid movement. A means of access is permitted to be
provided to facilitate adjustments and observations after the specimen is installed. The test chamber must not deflect under the test
load in such a manner that the performance of the specimen will be affected.
7.2.2 Air System—A controllable blower or a compressed air supply, designed to provide the required air-pressure difference
across the specimen. The system shall provide a constant air pressure difference for the duration of the test.
7.2.3 Combined Air/Water System—A combined air and water (fluid) system (See Fig. 1).
7.2.4 Pressure-Measuring Apparatus—A device to measure the test pressure difference with accuracy of 62 % of the reading
over the full range of test pressures.
7.2.5 Deflection-Measuring System—A means of measuring deflections with an accuracy of 60.25 mm (60.01 in.).
7.2.5.1 For Procedure A (see 10.2), any locations at which deflections are to be measured shall be stated by the Specifier or the
Test Director. See Figs. 2 and 3 for suggested locations.
F2247 − 11 (2017)
FIG. 1 Schematic of Test Arrangement
7.2.5.2 For Procedure B (see 10.3), any locations at which deflections are to be measured shall be stated by the Specifier or the
Test Director. See Figs. 2 and 3 for suggested locations.
7.2.5.3 Deflection measurements shall be independent of movements of, or movements within, the specimen or member
supports.
7.2.6 If desired, strain gauges to measure strain shall be mounted on the side of the door panel in tension. Strain gauges are
attached to the tension side of the door panel. They are to be mounted in accordance with the strain gauge manufacturer’s
instructions.
7.2.6.1 The location of the gauges are to be determined by the specifier or the door manufacturer and they shall be placed where
the greatest changes in strain are anticipated, typically at the points of greatest flexure. See Figs. 2 and 3 for suggested locations.
8. Hazards
8.1 Proper care must be taken for the possibility of a failure. The system used in this test method contains considerable stored
energy and constitutes a hazard. The testing apparatus shall be equipped with a method to restrain the specimen in the event of
failure. The restraint method shall not interfere with the test nor the results of the test.
9. Calibration
9.1 Pressure Gage, deflection-measuring devices, and strain gauges shall be calibrated prior to testing to make certain the
devices are within specifications and requirements (see 7.2.4 and 7.2.5). Calibration of test equipment shall be in accordance with
the manufacturer’s recommendations and to a national recognized standard.
F2247 − 11 (2017)
FIG. 2 Test Fixture Elevation—Unseating Load Case
10. Required Information
10.1 The following information shall be supplied by the specifier:
10.2 Procedure A—Single Loading with no Deflection Curve:
10.2.1 Performance criteria and the number and gage location.
F2247 − 11 (2017)
FIG. 3 Test Fixture Elevation—Seating Load Case
10.2.2 The blast duration defined as the time interval between time of arrival of the blast wave at a given location and the time
for the magnitude of the pressure to return to ambient pressure. See Annex A1 for example of converting a dynamic pressure into
an equivalent static load.
10.2.3 The permitted damage level category in accordance with Section 11.
F2247 − 11 (2017)
FIG. 4 Horizontal Section—Unseating Load Case
10.2.4 The number and location of deflection and, if applicable, strain gages.
10.3 Procedure B—Single or Multiple Loading with Deflection Curve:
10.3.1 Same as 10.2.1 – 10.2.4, additionally:
10.3.2 The number of load cycles at which deflection and stress-strain measurements are required.
10.3.3 The number and location of required deflection and strain gages (if desired).
11. Acceptance Criteria
11.1 Acceptance of the door is based on the end use of the door. The door is classified into one of four damage level categories.
The criterion and acceptance for each category is:
11.1.1 Category I—The specimen is unchanged (no permanent deformation) after the loading incident and the door is fully
operable. The specimen remains intact and responds elastically.
11.1.1.1 Acceptance:
(1) After the specimen has been unloaded, verify that the deflection gages have returned to zero reading with a tolerance of
+2 mm ( ⁄64 in.).
(2) Verify that the door is operable by unlatching the door and swinging the panel.
F2247 − 11 (2017)
(3) If strain gages are used, check that the recorded stresses are within acceptable limits of door material.
(4) Verify that the door can be latched.
(5) Verify that the external portions of the latch and hinges have not suffered any permanent set.
11.1.2 Category II—The door is operable but measurable; permanent deformation to the door panel exceeding the tolerance
listed in 11.1.1.1 has been experienced. The specimen remains as an integral system.
11.1.2.1 Acceptance:
(1) After the specimen has been unloaded, verify that the measurable deformation is acceptable to the end use of the door.
(2) Verify that the specimen remains an integral system.
(3) If strain gages are used, check that the recorded stresses are within acceptable limits of door material.
(4) Verify that the door is operable by unlatching the door and swinging the panel.
11.1.3 Category III—Non-catastrophic failure. No structural failure occurs to the specimen that prevents the specimen from
providing a barrier to blast wave propagation. However, the specimen is permanently deformed and the door panel is inoperable.
11.1.3.1 Acceptance:
(1) After the specimen has been unloaded, verify that the measurable deformation is acceptable to the end use of the door.
(2) Verify that the specimen remains an integral system.
11.1.4 Category IV—The door panel is severely deformed. For a seating load test, the deformation of the door panel must be
limited to a level that does not cause the door panel to be forced through the door frame opening. For an unseati
...
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