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ASTM task group expands glass strength standard

Post Time:Nov 12,2013Classify:Industry NewsView:37

Members of the glass industry gathered in Norfolk, Va., April 15-18 for the building performance committee meeting of standards organization ASTM International in West Conshohocken, Pa. Ken Brenden, codes and industry affairs manager for the American Architectural Manufacturers Association in Schaumburg, Ill., says task groups met at the last meeting for the ASTM E6.51 subcommittee on the performance of windows, doors, skylights and curtain walls. Several groups started a balloting process for standards that, if approved, should be published as a new active standard later this year. Other [task groups] are in the initial round robin testing phase of validating the standard, Brenden says. Several developments came from the task group on glass strength, E6.51.13, says Valerie Block, senior marketing specialist for DuPont Building Innovations in Wilmington, Del. For the widely recognized ASTM E1300, Standard Practice for Determining Load Resistance of Glass, the group expanded the non-factored load charts up to 150 inches by 250 inches, to be incorporated in the 2007 version of the standard, she says. The non-factored load is a three-second uniform load with the probability of breaking eight or fewer monolithic lites per 1,000. Proposed or changing glazing standards: ASTM E1425-91 for determining acoustical performance ASTM E1996-06 for windborne debris in hurricanes ASTM E2112-07, a standard practice for glazing installation ASTM F588-04 for forced entry Proposed new standards: WK10542 for testing structural performance of thermal barriers in aluminum systems WK11254 for standard installation of windows with flangesTable 1“The task group is also working on a standard practice for determining uniform load resistance of glass with flexible support conditions … and overseeing research on the development of thermal stress factor methodology for residential and commercial insulating glass units,” Block says. Sixteen industry companies provided funding for the thermal stress modeling research, she says. ASTM is also developing a standard for glass flooring, says Julia Schimmelpenningh, architectural technical applications manager for Solutia Inc. of St. Louis. While no monumental changes were brought about at the recent meeting, Schimmelpenningh emphasizes that industry representatives need to stay current with standards. “Don’t sit back and decide that since you read the standard back in 1984 that what your customers are referencing today is the same document,” she says. “Subtle changes can occur … that may affect how you do business, what you supply, what you develop and how you market your products.” The next ASTM meeting will take place Oct. 28-31 in Tampa. See Table 1 for other active glazing-related standard changes.

—By Katy Devlin, e-newsletter editor, e-glass weekly Share this article:

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