Working Groups Report to Technical Services Committee
As part of the Insulating Glass Manufacturers Alliance's (IGMA)
annual meeting, taking place this week at the Hyatt Mission Bay
in San Diego, the Technical Services Committee met yesterday and
heard a summary of some of the ongoing activities, before discussing
Bruce Virnleson, outgoing chair of the Gas Permeability Working
Group, summarized the status of the IGMA research project evaluating
the gas permeability of edge seal assemblies (CLICK
HERE for related story). He noted that the request for proposal
had been signed and now the laboratory is preparing to begin work.
This week the group has begun recruiting volunteers to supply sealants
and spacers for use in the samples that will be tested. Virnleson
added that by the next meeting the working group expects to have
completed engineering and design of the cell, what the samples will
look like, an outline of the test method and "with a little
luck," some data to present.
Tracy Rogers, chair of the Glazing Guidelines Working Group, reported
that the group had primarily been researching the information that
already is available on capillary tubes in its continuing effort
to present a document on recommended practices for using capillary
tubes. The group will be sending out requests for available information
to IGMA members as well as members of other organizations.
Rogers then reported that the Visual Quality Voluntary Guidelines
document was waiting to be forwarded to the Technical Policy Committee
and then the IGMA board for review and approval.
Jeff Haberer, chair of the Thermal Stress Working Group, reported
that the group had performed some final "tweaking" of
its field service inspection form. He also gave an update on the
group's thermal stress bulletin. The group began this week to "flesh
out" its outline of "markers for what we want to elaborate
on," Haberer explained. Those outlined markers include points
such as frame types, building conditions and all other factors that
might contribute to thermal stress breakage. The outline already
has morphed from a list of "dos and don'ts" for thermal
stress to a document roughly titled "Design Considerations."
Under new business, the committee listened to requests for two
new working groups. John Kent, IGCC, advised taking a new look at
the TM-4000 Insulating Glass Manufacturing Quality Procedures Technical
Manual and its tone. "I think it was initially meant as a helping
hand," Kent commented, while advising the group to consider
revising it to create more mandatory, rather than advisory, language
as a result of other organizations looking to mandate the use of
"The specification part needs to be pulled out and the examples
left behind," Virnelson summarized. Virnelson volunteered to
chair this new group, since he was involved in the development of
the original document.
In addition, the committee heard a request from Dave Cooper of
Guardian Industries to consider creating a working group to research
information on triple glazed IG units.
"Is there enough information out there to be referencing triple
glazing?" he asked the committee, pointing to documents that
do so. This new request is being forwarded to the technical policy
committee to determine under which existing group such a task might
HERE to read more about this week's annual meeting.
The meeting continues through this Friday, with a closed board
meeting. Stay tuned to USGNN.com for further updates.
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