Volume 38, Issue 11, November 2003

Falling Forward

With Many Decisions and Projects Finalized, GANA Committees Considered their Next Move at 2003 Fall Conference. 
by Ellen Giard Chilcoat

Where do we go from here? Seemed to be a common question for many divisions of the Glass Association of North America (GANA) during its annual Fall Conference, which took place September 20-23 at the Radisson Hotel and Suites in Chicago. More than 100 attendees took part in the conference.

The New Guys
This year’s conference marked the emergence of two new GANA divisions—the flat glass manufacturing and the insulating divisions. 

The flat glass manufacturing division met first. During its meeting the group finalized its operational protocol and also elected a chair and vice chair. Mark Muessner of Visteon was elected as the chair and Tom Mewbourne of AFG will be the vice chair.

In addition, the division is working on creating a website that will serve as an educational site in regards to flat glass.

Next, the insulating division met. For the group’s first gathering interest was strong, with close to 30 people attending the meeting. 

In its beginning stages, members discussed what the division’s mission should be, the objectives and activities in which it should become involved. Those attending concurred that the division’s focus and mission statement should be toward the commercial sector. It was noted that the insulating division could even provide an opportunity to include members of the building envelope contractors (BEC) division, rather than just insulating glass manufacturers and suppliers. Since BEC members are customers to the IG industry, their involvement could provide the division with an opportunity to understand the needs of its customers. 

Members also talked about areas of possible involvement, which could include issues such as bomb blast and security glazing, future fabrication trends, technology, specifications, educational codes and regulations and edge seal functions.

Tempering Activities
The tempering division met the next morning, beginning with the center-punch fragmentation subcommittee. GANA had petitioned the ANSI Z97.1 committee to remove the center-punch fragmentation test language from the standard with the exception that it would develop alternative language. The standard is currently out for comment. 
To address the testing and evaluation method for impact requirements in tempered glass, the subcommittee is working to develop a standard test method for center-punch fragmentation, which can be used in addition to the one detailed in the standard itself. A one-year timeline has been set to have a completed draft for review by Fall Conference 2004. The standard test method will provide a method of evaluating the break pattern of the glass, calculating the weight of the ten largest pieces. 

In addition, Cliff Monroe of Arch Aluminum & Glass will serve as the chair of the center-punch fragmentation subcommittee.

Next, the tempering division’s construction subcommittee met, lead by chairperson Al Lutz of PPG Industries. The subcommittee was in the process of finalizing a glass information bulletin titled Construction Site Protection of Architectural Glass, which has since been finalized. 

Communications have also continued with the International Window Cleaning Association. Lutz said that communications with the group remain constructive.

“By no means is the association as critical as some of its members—it is much more positive,” said Lutz. “Its leaders are interested in elevating the levels of interest and information amongst its members.” 

Members of the subcommittee discussed a recent petition by the window cleaning industry requesting that GANA modify language in its bulletin titled Heat Treated Glass Surfaces are Different. GANA responded to the petition, declining to change the bulletin’s language (see sidebar page 41).

Those attending the roll wave subcommittee meeting discussed the next steps for the standard test method and roll wave specification recommendation.

“The standard test method was accepted by both the subcommittee and the standards and engineering committee,” said subcommittee chair Ren Bartoe of Vesuvius McDanel. “It will be published predicated on a task force completing validation of a formula [for millidiopter calculation]. The roll wave specification was not passed by the standards and engineering committee, but will be addressed at Glass Week.” 

The subcommittee also discussed what types of glass in which it would next investigate distortion. According to Bartoe, clear low-E, tinted low-E and solar control glass products are high priority on the list of possibilities. 

During the standards and engineering committee meeting ANSI Z97.1 chairperson Valerie Block provided an update on the standard.

“Currently there are no appeals,” Block said. “The only thing that is open for comment is the center punch language.”

Greg Carney, GANA technical director followed with an ASTM update. He said that ASTM 10C48, the standard specification for heat treated flat glass, has been balloted and the negatives and comments are being addressed.

Other related ASTM documents discussed included C1172, standard specification for laminated architectural flat glass, which has been reviewed and is now available, and C1349, standard specification for architectural glass clad polycarbonates. C1349 negatives are being addressed and a 2003 version will most likely be available of it as well.
During the tempering division membership meeting, a marketing committee was formed that will be chaired by Kris Vockler of ICD. The committee is in its beginning stages, but will be working to provide educational tools about the benefits of tempered glass.

Laminating Division
The first meeting of the laminating division was the optical distortion task group, which was chaired by Pete Anderson of Viracon. During the meeting the group was working on finalizing a bulletin titled Design Considerations for Laminated Glazing Applications. The document is now available.
 
Under new business, the task group began to look at ways to measure optical distortion in laminated glass. The group is discussing the development of a standard specification, and agreed it will further meet at Glass Week 2004.

The emergency egress task group lead by Solutia’s Mark Gold met next. The task group is currently working on a bulletin titled Emergency Access Through Laminated Glass.
At the point-supported glass task group meeting, chaired by Bill Coddington of W.S. Coddington Consulting LLC, efforts continued to focus on publishing a bulletin. The question, however, is does there need to be more? Should a complete design guide, which would focus on small point supported jobs be written? 

Julie Schimmelpenningh of Solutia chaired the product labeling task group and Laminated Glazing Reference Manual task group meetings, which followed. The product labeling task group is currently working on a bulletin that will be titled Product Labeling for Architectural Glass, and will cover application-specific labeling for architectural laminated glass. During the reference manual meeting, Schimmelpenningh said the 2003 version is available. 

General Session
The final morning of the conference several presentations took place covering topics such as new products and technologies and building codes.

Bob Maltby of First Solar LLC was the first presenter. His topic focused on photoelasticity. He said that in the glass industry photoelasticity is a detective tool that describes measuring the stress of glass.

A series of new product presentations next took place. Speakers were Mark Abbott of LiteSentry Corp. who talked about window optics, distortion and ways to increase profit by decreasing variances; Bob Maltby talked about glass in photocells and solar panels; and Jerry Razwick of Technical Glass Products talked about fire-rated glass and framing. 
Next, Mike Pfeiffer of the International Code Council discussed the 2003 International Building Code, which was published last February.

“For the most part, there has not been a lot of significant changes to the codes,” Pfeiffer said. “The most misinterpreted part is when [to use] safety glazing in windows.” (For more information on the 2003 IBC see related article in the August 2003 USGlass, page 52.) 
The day’s final presenter was Bruce Kaskel of Wiss, Janney, Elstner Associates of Chicago. He provided a case study on the history of glass breakage in one Chicago building. Glass in the building began breaking in the 1970s, due primarily to thermal stress. One method employed that attempted to eliminate the problem of glass breakage was applied films. While several breaks continued to occur, the films held the glass in place. However, he explained that due to other considerations a decision was made to replace all glass in the building with heat-strengthened laminated glass.

Future Dates; 
At press time, no dates or location had been announced for the 2004 Fall Conference. To learn more about GANA activities visit www.glasswebsite.com

GANA Responds to Petition by Window Cleaners; GIB Will Remain Intact
Professional window cleaners petitioned the Glass Association of North America (GANA) just prior to the Fall Conference requesting that some wording in the Glass Information Bulletin Heat Treated Glass Surfaces Are Different be modified. According to a press release issued by the Window Cleaning Network, the petition was a summer project of its website, www.window-cleaning.net, and 340 submitters, including representatives of the window cleaning industry and scraper manufacturers and distributors, signed the petition.

The Window Cleaning Network has taken issue with wording in the bulletin that says scraping glass can be damaging “if microscopic particles have adhered to the surface.” The petition asked that GANA modify the text to say that when recommended maintenance procedures for washers, rollers and other tempering equipment are followed … fabricating debris issues are minimized. 

GANA executive vice president Stanley L. Smith responded to the petition via a letter to Gary Mauer, a Window Cleaning Network contact person.

“The standards and engineering committee of the tempering division of GANA considered your petition at its recent Chicago meeting and respectively declines to modify the text of the Glass Information Bulletin,” wrote Smith. “We believe the bulletin accurately describes the inherent characteristics of today’s glass products, providing a higher level of thermal and optical performance, security and safety through added fabrication processes, including heat-treating.” 

Smith continued, “We encourage today’s professional window cleaners to be aware of the use of heat-treated glass and to help educate builders and owners that today’s products cannot be treated the same as products of the past. Steps should be taken to protect the glass during construction and windows must be properly cleaned by trained professionals in accordance with recommendations of the glass manufacturers/fabricators.”

 


USG

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