ASTM E987-88(2009)
(Test Method)Standard Test Methods for Deglazing Force of Fenestration Products
Standard Test Methods for Deglazing Force of Fenestration Products
SIGNIFICANCE AND USE
Under normal usage, deglazing loads are generally applied parallel to the plane of the glazing material and eccentric to the sash element when it is opened, closed, or lifted out of the frame. When operating hardware is present, torsional forces may be increased. Opening and closing forces are normally applied from the interior side only. Sliding glass door panels are activated from both sides.
The ability of fenestration products to resist deglazing forces may vary with a number of factors. These factors should be considered when selecting test specimens or when interpreting test results. Bedding compounds in newly assembled sashes may not reach full strength until they have been allowed to cure for several days or weeks. Some sash materials are subject to shrinkage at low temperatures and increased elasticity at high temperatures. Therefore, a sash containing these materials may exhibit a range of deglazing resistance due to varying temperature conditions. Normal manufacturing tolerances and clearances in sash members and glazing materials may also affect deglazing resistance. Further, although fenestration products are designed to operate within certain force limits, improper installation, wear, and abuse may increase the forces necessary for sash operation.
When determining which members of a given sash shall be tested for deglazing resistance, consideration must be given to the manner in which the sash may be operated when normally installed. Handles and lift devices are usually located on the sash for the convenience of the operator and therefore dictate the normal direction of operation.
Test Method A presents a technique for actual measurement of the deglazing forces of an individual sash member.
Test Method B presents a technique for measuring the deglazing force of two opposite members. This test method is intended for quality control measurements.
SCOPE
1.1 These test methods measure the resistance of elements of fenestration products such as operating (or removable) window sashes, storm sashes, and sliding glass door panels (hereafter referred to as sash members) to forces tending to deglaze the construction.
1.2 These test methods utilize concentrated loads applied to the interior side of a sash member in a manner simulating normal opening and closing forces. Removable sashes are loaded to simulate handling for removal and cleaning.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
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Designation: E987 − 88 (Reapproved 2009)
Standard Test Methods for
Deglazing Force of Fenestration Products
This standard is issued under the fixed designation E987; 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 3.2.3 deglazing force—the force required to obtain the
deglazing measured.
1.1 These test methods measure the resistance of elements
of fenestration products such as operating (or removable)
4. Significance and Use
window sashes, storm sashes, and sliding glass door panels
4.1 Under normal usage, deglazing loads are generally
(hereafter referred to as sash members) to forces tending to
applied parallel to the plane of the glazing material and
deglaze the construction.
eccentrictothesashelementwhenitisopened,closed,orlifted
1.2 These test methods utilize concentrated loads applied to
out of the frame.When operating hardware is present, torsional
the interior side of a sash member in a manner simulating
forces may be increased. Opening and closing forces are
normal opening and closing forces. Removable sashes are
normally applied from the interior side only. Sliding glass door
loaded to simulate handling for removal and cleaning.
panels are activated from both sides.
1.3 The values stated in inch-pound units are to be regarded
4.2 The ability of fenestration products to resist deglazing
as standard. The values given in parentheses are mathematical
forces may vary with a number of factors.These factors should
conversions to SI units that are provided for information only
be considered when selecting test specimens or when interpret-
and are not considered standard.
ing test results. Bedding compounds in newly assembled
1.4 This standard does not purport to address all of the sashes may not reach full strength until they have been allowed
safety concerns, if any, associated with its use. It is the to cure for several days or weeks. Some sash materials are
responsibility of the user of this standard to establish appro- subject to shrinkage at low temperatures and increased elastic-
priate safety and health practices and determine the applica- ity at high temperatures. Therefore, a sash containing these
bility of regulatory limitations prior to use. materials may exhibit a range of deglazing resistance due to
varying temperature conditions. Normal manufacturing toler-
2. Referenced Documents
ances and clearances in sash members and glazing materials
2.1 ASTM Standards:
may also affect deglazing resistance. Further, although fenes-
E631 Terminology of Building Constructions
tration products are designed to operate within certain force
limits, improper installation, wear, and abuse may increase the
3. Terminology
forces necessary for sash operation.
3.1 Definitions—For definitions of terms used in these test
4.3 When determining which members of a given sash shall
methods, refer to Terminology E631.
be tested for deglazing resistance, consideration must be given
3.2 Descriptions of Terms Specific to This Standard:
to the manner in which the sash may be operated when
3.2.1 bite—the distance from the edge of the glazing mate-
normally installed. Handles and lift devices are usually located
rial to the sight line.
on the sash for the convenience of the operator and therefore
3.2.2 deglazing—the movement of a sash member from its
dictate the normal direction of operation.
original position in relation to the glazing material. Deglazing
4.4 Test Method A presents a technique for actual measure-
is expressed as a percentage of the original (before testing)
ment of the deglazing forces of an individual sash member.
glazing “bite.”
4.5 Test Method B presents a technique for measuring the
These test methods are under the jurisdiction of ASTM Committee E06 on
deglazing force of two opposite members. This test method is
Performance of Buildings and are the direct responsibility of Subcommittee E06.51
intended for quality control measurements.
on Performance of Windows, Doors, Skylights and Curtain Walls.
Current edition approved Nov. 1, 2009. Published January 2010. Originally
5. Apparatus
approved in 1964. Last previous edition approved in 2001 as E987 – 88 (2001).
DOI: 10.1520/E0987-88R09.
5.1 Hydraulic or Pneumatic Ram, or an equivalent capable
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
of producing at least a 100-lbf (445-N) force when connected
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
to a hydraulic pump or compressed air supply, or an equivalent
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. of suitable capacity. The ram piston extension can be fitted to
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E987 − 88 (2009)
allow the addition of extensions to accommodate the width or members under test. One extensometer is required for Test
length of the specimen to be tested. MethodAand two extensometers are required for Test Method
5.1.1 Sliding Contact Shoe, to be fitted on either end of the B.
ram, as shown in Fig. 1.
5.1.1.1 For Test Method A, only one shoe is required, since
6. Test Specimen
the opposing force will be dissipated against a stationary
6.1 Submit the test specimen glazed in accordance with the
support.
manufacturer’s standard practices for the window sash or the
5.1.1.2 ForTestMethodB,twocontactshoesarerequiredto
door panel to be tested. The test specimen shall be of the
generate the opposing forces against opposite sash members.
maximum width and maximum height for which the test data
5.1.2 Force Gage, capable of measuring force to an accu-
is to be determined.
racy of 61.0 lbf (64.5 N).
6.2 The sash or panel members to be included in this test are
5.1.2.1 The apparatus, including the gage system, shall be
those having integral pull provisions, and those having no
calibrated and a calibration curve prepared every 6 months
integral pull provisions, but fitted with handles, latches, or
correlating gage readings to pounds-force generated.
other means that might be used to operate the window or door.
5.2 Extensometers, capable of being read to an accuracy of
Removablewindowsashes,becauseoftheirinherentcapability
0.01 in. (0.25 mm), required to measure the deflection of the
of being lifted by any sash surround, shall be tested on all four
sash surround members.
6.2.1 Test sliding glass door panels from both the interior
and exterior side on the stile containing the locking
mechanism, necessitating the submission of at least two panels
for each door tested.
6.3 A
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