Ballots Move Forward for Board Approval During Today's NFRC Meetings
The Component Modeling Approach (CMA) subcommittee met this morning
as part of day three of the National Fenestration Rating Council's
(NFRC) summer meeting in Chicago. Two task group reports were presented
and four ballots were discussed.
Mike Thoman from Architectural Testing Inc. reported on the validation
testing task group. The group had met Monday this week to review
preliminary language. Thoman said he expects to have that language
out for input from members in the next couple of weeks and a ballot
by the fall meeting. (CLICK
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|More than 100 people are in Chicago for NFRC's
Summer Meeting at the Conrad Hotel.
Charlie Curcija from Carli Inc. next reported on the work of the
non-standard products task group. The task group has conducted a
research project to determine whether non-standard products-those
not a part of the original CMA development, such as sloped and structural
glazing-can be included in CMA. Curcija said the task group's simulation
research has determined that these products can be included. Some
members however were not in complete agreement.
Thoman pointed out that the CMA language must explain exactly how
the products fit in.
"We need to spell that out in the document or reference the
software," said Thoman, who explained that for these products
the language has not yet been covered in the technical documents.
Greg Carney, technical director for the Glass Association of North
America, said that when it comes to commercial construction anything
beyond basic storefront and curtainwall products is completely custom
and non-standard. He stressed the importance of ensuring that the
CMA will be able to handle the diversity of these products.
"You have to look at the custom side [of commercial glazing]
and that's a continuous process," said Carney.
According to Curcija, CMA is able to handle these non-standard
There was also discussion over four ballots. Regarding the frame
values - NFRC 100 ballot, a motion was made and seconded to remove
generic values. This ballot is moving forward to the board for further
"Generic values take NFRC in a direction that reduces credibility,"
said Jeff Baker of WESTLab.
The frame grouping ballot, frame values - NFRC 200 ballot and spacer
grouping rules ballot were also reviewed and moved forward to committee.
The technical committee voted to move the ballots forward to the
board based on subcommittee recommendations.
The CMA will be further discussed this afternoon during the Ratings
Stay tuned to USGNN.com for further updates.
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