Tempering Meeting

During the tempering division meeting a number of topics were covered.

Having published a standard test method for clear, architectural glass, discussions took place over the possibility of ending the activities of the subcommittee. However, many members disagreed, saying that because optical distortion is an important issue, the group is one for which there is a strong need, and one that should be kept active within GANA. Not wanting to limit its efforts just to roller wave, a decision was made to disband the roller wave subcommittee and create the new optical distortion subcommittee. This would allow the group to focus on all optical distortion properties.

Other activities for the tempering division include updating the Standards & Engineering manual and also writing new Glass Information Bulletins. Two topics for bulletins are quench patterns in heat-treated glass and thermal stress in today's architectural glass.

Greg Carney, GANA technical director, discussed the benefit in creating these bulletins. The group's document, Heat-Treated Glass Surfaces are Different, has already been downloaded more than 5,000 times from www.glasswebsite.com in 2005.

"This is certainly showing the value of these documents," said Carney.

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