ASTM C716-06(2020)
(Specification)Standard Specification for Installing Lock-Strip Gaskets and Infill Glazing Materials
Standard Specification for Installing Lock-Strip Gaskets and Infill Glazing Materials
ABSTRACT
This specification covers installation procedures for lock-strip gaskets and for infill glazing materials in lock-strip gasket glazing applications used in building walls. The prime performance considerations are weathertightness against air and water infiltration, and structural integrity under wind loads. H-type gasket and reglet-type gasket are types of single-opening gasket systems which should be installed according to the specified requirements. Installation of multiple-opening gasket systems shall be classified as: unsupported vertical ladder assembly; unsupported horizontal ladder assembly; supported vertical ladder assembly; supported horizontal ladder assembly; and grid assembly. Installation of stick system, glass or panel into gasket, and lock-strip shall be in accordance with the requirements specified.
SIGNIFICANCE AND USE
3.1 This specification can be referred to in contract documents as a method and workmanship standard for the installation of lock-strip gasket glazing systems. See also related standards (Specifications C542 and C963, Guide C964, and Terminology C717).
SCOPE
1.1 This specification covers installation procedures for lock-strip gaskets that comply with Specification C542 and for infill glazing materials in lockstrip gasket glazing applications used in building walls which are not more than 15° from a vertical plane. The prime performance considerations are weathertightness against air and water infiltration, and structural integrity under wind loads.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only.
1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.
1.4 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.
General Information
Relations
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: C716 −06 (Reapproved 2020)
Standard Specification for
Installing Lock-Strip Gaskets and Infill Glazing Materials
This standard is issued under the fixed designation C716; 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 tion of lock-strip gasket glazing systems. See also related
standards (Specifications C542 and C963, Guide C964, and
1.1 This specification covers installation procedures for
Terminology C717).
lock-strip gaskets that comply with Specification C542 and for
infill glazing materials in lockstrip gasket glazing applications
4. Installation
used in building walls which are not more than 15° from a
vertical plane. The prime performance considerations are
4.1 Inspection of Components—Before installing gaskets,
weathertightness against air and water infiltration, and struc-
the installer shall check the mounting frames to see that they
tural integrity under wind loads.
are within specified dimensional tolerances and not out-of-
1.2 The values stated in SI units are to be regarded as
squareorplane,andcheckallgasketsfortype,dimensions,and
standard. The values given in parentheses are provided for
defects such as misalignment at molded corners and damaged
information only.
lips. Installation shall not proceed until corrections have been
made.
1.3 The committee with jurisdiction over this standard is not
aware of any comparable standards published by other orga-
4.2 Environmental Conditions—Maximum efficiency and
nizations.
sealing capability of gaskets is achieved in a clean, dry, warm
1.4 This international standard was developed in accor-
environment, with the gasket kept resilient during the entire
dance with internationally recognized principles on standard-
installation process. During cold weather the use of temporary
ization established in the Decision on Principles for the
enclosures around the units to be glazed or paneled will
Development of International Standards, Guides and Recom-
facilitate temperature control and also aid in keeping open
mendations issued by the World Trade Organization Technical
gasket channels clean and dry.
Barriers to Trade (TBT) Committee.
4.3 Preparation and Conditioning of Gaskets—Lock-strip
gaskets require conditioning prior to installation in order to
2. Referenced Documents
2 restore maximum resiliency and remove deformations after
2.1 ASTM Standards:
prolonged storage in a coiled or stressed position. Gaskets shall
C542 Specification for Lock-Strip Gaskets
be unpacked from their containers and conditioned for 24 h in
C717 Terminology of Building Seals and Sealants
a temperature not lower than 21.1 °C (70 °F) by being placed
C963 Specification for Packaging, Identification, Shipment,
flat or hung on racks to permit recovery of their original
and Storage of Lock-Strip Gaskets
shapes. Racks shall be free of rough surfaces, projections,
C964 Guide for Lock-Strip Gasket Glazing
sharp edges, and other conditions that could damage the
gaskets. When the ambient temperature is 10 °C (50 °F) or
3. Significance and Use
below and a heated space is not available, gaskets shall be
3.1 This specification can be referred to in contract docu-
heated by other means to remove deformations and provide a
ments as a method and workmanship standard for the installa-
high degree of flexibility and resiliency. This may be done by
warming them in hot water or heated containers. Gaskets shall
not be heated by being draped over heated units or placed in
This specification is under the jurisdiction of ASTM Committee C24 on
direct contact with a flame or fired heating device. The
Building Seals and Sealantsand is the direct responsibility of Subcommittee C24.73
installation of glass, panel, and lock-strip shall be completed
on Compression Seal and Lock Strip Gaskets.
Current edition approved Jan. 1, 2020. Published January 2020. Originally
while the gasket is still warm and pliable and with the gasket
approved in 1973. Last previous edition approved in 2015 as C716 – 06 (2015).
channels clean and dry.
DOI: 10.1520/C0716-06R20.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.4 Use of Tools—To minimize the possibility of damage,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
sharp or pointed tools or implements such as screwdrivers or
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. putty knives shall not be used on lock-strip gaskets. Suitable
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C716 − 06 (2020)
gasket installation tools, such as nonmetallic spatulas and 4.8 Installation of Multiple-Opening Gasket Systems (See
engineered lock-strip insertion devices, are available from the Figs. 1 and 2):
4.8.1 UnsupportedVerticalLadderAssembly—Laterally un-
gasket manufacturer.
supported vertical ladder type installations as illustrated in Fig.
4.5 Use of Lubricants—If necessary a lubricant may be
2, where the vertical load of a light of glass is transferred
applied to the contact surfaces of the gasket to ease the
through the gasket web to the light below, with lateral support
installation and help prevent damage to the gasket, glass, or
at the jambs, are not recommended. Refer to Guide C964 for a
panel. The lubricant shall be nonstaining, nontoxic,
discussion of the disadvantages of this type of system.
noncorrosive, chemically stable, compatible with all contact
4.8.2 Unsupported Horizontal Ladder Assembly—Mark on
components, easily removable from exposed surfaces by dry
the head and sill frame members the exact location of the
wiping or with water, and acceptable to the manufacturer of the
center line of the vertical gasket muntin. Install the jamb
supporting frame, panel, and gasket.
section first, then work along the head and sill to the first
muntin.Align each gasket muntin with the center lines marked
4.6 UseofSupplementaryWetSealants—The use of supple-
on the head and sill. Install the glass or panel. The installation
mentary wet sealants in conjunction with lock-strip gasket
of setting blocks and edge spacers can be performed as
installations is only required under certain conditions. Such a
described in 4.10.Then insert the lock-strip at the sill and head,
condition would occur when the outer lip of the gasket extends
running to within a few inches of the first gasket muntin.
over a butt joint in the supporting frame. The void formed
Continue the procedure by installing the next glass or panel.
between the gasket and frame shall be sealed at the time of
Insert the lock-strip into the muntin first and continue with the
installation with a wet sealant. However, the sealant may be
insertion of the lock-strip at the head and sill members. Repeat
omitted if the system is designed to drain any water that enters
the procedure until all glass or panels are installed.
to the exterior, and the omission of a wet sealant is agreeable
4.8.3 Supported Vertical Ladder Assembly—Align and se-
to the purchaser and seller.Another condition would be at field
cure the gasket horizontal muntins to the corresponding sup-
butt joints in gaskets. Such joints require the use of a sealant
porting structural members.The gasket muntins are held in line
installed in, rather than on top of, the joint at the time of the
by the structural supporting muntin members with the entire
gasket installation. The wet sealant used, as well as the sealant
ladder gasket unit completely supported during the install
...
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