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ASTM Wood Committee approves fire resistance test standard.

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May 25, 2012 - ASTM International Committee D07 on Wood has approved ASTM D7746, Practice for Calculating the Superimposed Load on Wood-Frame Floor-Ceiling Assemblies for Standard Fire Resistance Tests. Developed by Subcommittee D07.05 on Wood Assemblies, standard will be used in conjunction with other fire test standards, and will be used primarily by manufacturers who are seeking fire resistance tests and agencies that conduct such tests.

ASTM Committee on Wood Approves Fire Resistance Test Standard


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Press release date: May 23, 2012

W. CONSHOHOCKEN, Pa., -ASTM International Committee D07 on Wood has approved a new standard, ASTM D7746, Practice for Calculating the Superimposed Load on Wood-Frame Floor-Ceiling Assemblies for Standard Fire Resistance Tests. ASTM D7746, which was developed by Subcommittee D07.05 on Wood Assemblies, will be used in conjunction with other fire test standards.

Standards such as ASTM E119, Test Methods for Fire Tests of Building Construction and Materials, and ASTM E1529, Test Methods for Determining Effects of Large Hydrocarbon Pool Fires on Structural Members and Assemblies, specify that throughout the fire resistance test, a constant superimposed load shall be applied to a load-bearing test specimen to simulate a maximum load condition.

"There are various ways to interpret the intent of the loading requirements in E119," says Bradford Douglas, American Wood Council's Vice President of Engineering and a D07 member. "Combined with the design provisions in the National Design Specification for Wood Construction (ANSI/AWC NDS-2012), testing agencies have developed varying test configurations for similar wood-frame floor/ceiling assemblies, thus providing a wide range of results."

Douglas says that the purpose of ASTM D7746 is to provide a means of conducting a standard fire resistance test for evaluating these floor/ceiling assemblies. ASTM D7746 will be used primarily by manufacturers who are seeking fire resistance tests and agencies that conduct such tests.

To purchase ASTM standards, visit www.astm.org and search by the standard designation, or contact ASTM Customer Relations (phone: 877-909-ASTM; sales@astm.org). 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 astm.org/sn-construction or follow us on Twitter @ASTMBuildings.

ASTM Committee D07 Next Meeting: Oct. 9-10, 2012, Madison, Wis.
Technical Contact: Bradford K. Douglas, P.E., American Wood Council, Leesburg, Va., Phone: 202-463-2770; bdouglas@awc.org
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