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Description of ASTM-E2768 2018ASTM E2768-11-Reapproved2018Active Standard: Standard Test Method for Extended Duration Surface Burning Characteristics of Building Materials (30 min Tunnel Test)ASTM E2768Scope 1.1 The purpose of this fire-test-response standard is to evaluate the ability of a product to limit the surface spread of flame when evaluated for 30 min. This fire-test-response standard uses the apparatus and procedure of Test Method E84 with the total test period extended to 30 min. 1.2 Building applications affecting fire and life safety often require products with specific criteria for surface spread of flame and flame spread index. The resulting performance characteristics included in the conditions of classification for this fire-test-response standard are intended to be used for regulatory purposes to determine the suitability of materials or products for use in buildings under specified conditions where significantly reduced surface burning characteristics are required. 1.3 Materials and products that are beyond the scope of Test Method E84 are beyond the scope of this standard. 1.4 Materials or products which melt, drip or delaminate to the extent that the continuity of the flame front is destroyed are beyond the scope of this standard. Note 1: Testing of materials that melt, drip, or delaminate to such a degree that the continuity of the flame-front is destroyed, results in low flame spread indices that do not relate directly to indices obtained by testing materials that remain in place. Materials or products that melt, drip, or delaminate, or that cannot support their own weight, have the potential for demonstrating reduced flame spread results as compared to the flame spread results where the materials or products remain in place during testing. 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 The text of this standard references notes and footnotes that provide explanatory information. These notes and footnotes, excluding tables and figures, shall not be considered as requirements of the standard. 1.7 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.9 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. 1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. Keywords flame spread index; surface burning characteristics; smoke develop index; ICS Code ICS Number Code 13.220.50 (Fire-resistance of building materials and elements) DOI: 10.1520/E2768-11R18 This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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