Association News

ASTM Standard addresses transmittance of glass and glazing.

Press Release Summary:

Jul 29, 2013 - ASTM WK41897, Test Method for EMI Transmittance and Shielding Rating for Glazing Infill, will be helpful in selecting glass or glazing that has proper communication transmittance rate for location in which it is being used. Standard will provide test method by which lites or glazings can be evaluated for their transmittance on, or shielding capability to, electromagnetic frequencies, and will help users understand capability and contribution of glazing materials to EMI security systems.

ASTM International - West Conshohocken, PA

Original Press Release

Proposed New ASTM Security Standard to Aid in Selection of Proper Communication Transmittance Rate for Glass or Glazing

Press release date: Jul 23, 2013

W. CONSHOHOCKEN, Pa., —A proposed new ASTM International standard will be helpful in selecting glass or glazing that has a proper communication transmittance rate for the location in which it is being used. ASTM WK41897, Test Method for EMI Transmittance and Shielding Rating for Glazing Infill, is being developed by Subcommittee F12.10 on Systems Products and Services, part of ASTM International Committee F12 on Security Systems and Equipment.

Julia Schimmelpenningh, global architectural applications manager, Eastman Chemical Co., and an F12 member, explains that information can move through glass or glazing with varying degrees of effectiveness, depending on the electromagnetic transmittance level of the glass or glazing. In some cases, such as for cell phone reception or automatic payment systems for a toll road, a high transmittance rate is desired. In other scenarios, for example, in homes, offices and government buildings in which sensitive personal information is housed, a low transmittance rating is preferable.

“It has been determined that there is a significant need and desire to create a standardized methodology for acquiring an electromagnetic interference rating for glazing so that components of the glazing system could be selected based on a level and accepted playing field,” says Schimmelpenningh.

The proposed standard will provide a test method by which lites or glazings can be evaluated for their transmittance on, or shielding capability to, electromagnetic frequencies. Use of the test method will generate data for glazing infill that can be used by consumers, designers and system manufacturers to understand the capability and contribution of glazing materials to EMI security systems.

“We anticipate that once it has been approved, the proposed standard will be used as a mechanism to aid in the selection of glazing infill materials for the production of windows, doors, skylights, cars, planes, boats and more,” says Schimmelpenningh.

All interested parties are invited to join in the standards developing activities of F12. In addition to ASTM WK41897, work is being done in the areas of physical barriers, blast resistance, forced entry and locking mechanisms, among others.

ASTM International welcomes participation in the development of its standards. For more information on becoming an ASTM member, visit www.astm.org/JOIN.

ASTM International is one of the largest international standards development and delivery systems in the world. ASTM International meets the World Trade Organization (WTO) principles for the development of international standards: coherence, consensus, development dimension, effectiveness, impartiality, openness, relevance and transparency. ASTM standards are accepted and used in research and development, product testing, quality systems and commercial transactions.

For more news in this sector, visit www.astm.org/sn-safety or follow us on Twitter @ASTMSafety.

ASTM Committee F12 Next Meeting: Oct. 21-21, 2013, October Committee Week, Jacksonville, Fla.

Technical Contact: Julia Schimmelpenningh, Eastman Chemical Co., Springfield, Mass., Phone: 413-730-3413; jcschi@eastman.com 

ASTM Staff Contact: Joseph Hugo, Phone: 610-832-9740; jhugo@astm.org 

ASTM PR Contact: Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org