Summer Meeting Opens in Chicago
The National Fenestration Rating Council's (NFRC) Summer Meeting
opened today in Chicago at the Conrad Chicago Hotel. The Component
Modeling Approach (CMA) was a major part of this morning's agenda,
with the labeling, validation and technical task groups all meeting.
Unlike some past meetings, the labeling task group, chaired by
Charlie Curcija from Carli Inc. was brief. The group discussed minor
comments from a label certificate ballot, which will next be brought
to the subcommittee for further discussion and approval.
|Frank Fisher from Arcadia Inc. speaks up during
the CMA technical task group meeting.
The validation task group meeting, chaired by Mike Thoman from
Architectural Testing Inc., followed. During past meetings the group
has been working to develop language for the framing validation
testing portion of the CMA procedure. Thoman explained that at the
last meeting the group struggled to define what it was exactly working
to validate within CMA.
"I've put together some language that we can discuss so that
we can put together a ballot by the next meeting," said Thoman,
who added that this language was "just to get the ball rolling"
in the right direction.
One point raised by Thoman during the meeting is the fact that
framing products for CMA-mainly aluminum and steel-are very different
than the framing materials with which NFRC is most familiar-wood
and vinyl-those used primarily with residential window products.
Some members raised concerns, though, that it would be more beneficial
to the non-residential industry to rely more on simulation procedures
rather than validation testing, which the industry already does.
"I think we should look at putting a plan in place to move
toward a pure simulation approach," said John Lewis from the
American Architectural Manufacturers Association (AAMA).
Thoman responded, "Our [NFRC] background in simulation doesn't
really apply to aluminum products. Our experience is in simulating
wood and vinyl products
and we have less date on the CMA
products," he said.
Lewis suggested a research project that could define the parameters
that cause the variations in the product types.
"We need to look to alternative approaches to try and tackle
whatever problems there are on the simulation level," said
Thoman said they will next take these comments and language through
a new task group feedback request vehicle (similar to a task group
ballot) in order to prepare and finalize the language before next
sending it forward to subcommittee.
The CMA technical task group, chaired by Mahabir Bhandari with
Carli Inc., also met this morning to discuss four ballots. At the
task group level, however, most members chose not to comment or
discuss their negatives and/or comments, since the concerns will
again be covered and discussed during tomorrow's subcommittee meeting.
NFRC summer meetings continue through Thursday this week. Stay
tuned to USGNN.com for more news and coverage of the event.
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