World Fence News

June 2013

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82 • JUNE 2013 • WORLD FENCE NEWS The Chain Link Fence Manufacturers Institute (CLFMI) now has available on its web site "The Tested and Proven Performance (Using ASTM F2781 Testing Standards) of Security Grade Chain Link Fencing Systems." The paper reports on the results of performance testing of chain link fence systems' deterrent, delay and protection capabilities against ASTM F2781 testing standards. According to the report's executive summary, "By using ASTM F2781 testing standards, which compared security grade chain link's performance against that of a major competitive product, the security and fence industries now have data to verify the effectiveness of security grade chain link fence products in deterring and delaying intruders in high security applications. The tests showed select security grades of chain link significantly outperformed their potential competitors in resisting low and medium force entry efforts, and one grade was comparable in High Aggressive Threat Levels involving powerful gasoline powered equipment. Results of performance testing for security grade chain link systems now available from CLFMI "In addition, impact testing (a 4,000 pound vehicle traveling 20 mph) has shown security grade chain link to be effective in absorbing the impact of a vehicle, which establishes it as an effective safety barrier for parks, schools, and other public places," the foreword stated. The testing was conducted by one of the nation's most respected independent testing organizations, the Southwest Research Institute in San Antonio, Texas, and the empirical test data and finding of the testing shows: • Security grade chain link fence can be effective in deterring and delaying intruders and providing protection from vehicular impact in high security applications when properly specified and installed. (Design engineers should also adhere to ASTM guidelines for appropriate framework and fittings). • Properly specified and installed security grade chain link fence provides superior resistance to both low and medium grade forced-entry threats and significantly outperformed a competing expanded metal [1/2"-13R (.188)] panel fence system in both categories. • Security grade chain link offers different products, fabrics, and gauges for different levels of threats when establishing perimeters and measuring performance in vehicular impact resistance. • Security grade, small mesh chain link fence is designed to preclude toeholds and finger penetration, serves as an effective barrier to the passage of weapons, and provides good visibility for the detection of breaching attempts. • Subjecting security grade chain link fence to ASTM testing standards through an independent testing organization provides the security and fence industries with data and test results needed for good, defensible decisionmaking. According to "Security Planning and Design: A Guide for Architects and Building Design," a wide variety of tactics and techniques can be used to defend against a forced-entry attack ranging from high level to relatively low-level protection, but the main pur- pose of the perimeter is to detect and delay aggressors attempting to penetrate a facility. The writer, Joseph A. Demkin, American Institute of Architects, went on to say, "It is not practical to harden a commercial facility to prevent penetration; therefore, it is imperative to coordinate the level of protection for these properties with the time of law enforcement response." Thus concluding that the level of protection (i.e., the specified time to penetrate) chosen for a property is often coordinated with the time required for appropriate response. With this data, gathered through ASTM approved testing procedures, security and fence professionals can specify and select fence systems based on both the penetration delay time required for an appropriate response by security personnel, and on security grade chain link's vehicular impact resistance capabilities. "While claims have been made by the producers of competing fence systems about the performance of their products against chain link fence systems, these testing results provide the data needed by security and fence professionals to make a well informed, logical decision," the summary stated. To download this report and for more information on CLFMI publications, visit www.chainlinkinfo.org. World Fence News has a Facebook page! Enter or click on the link below http://www.facebook.com/pages/World-Fence-News/121158604594820 Then click on "Like" to receive updates! Any questions, contact World Fence News at 800-231-0275 View our web page at www.worldfencenews.com Subscribe to World Fence News Today! For subscription info, visit our web site at www.worldfencenews.com Click on the "Subscribe Now" button at the bottom of the front page. Or contact us at 800-231-0275 World Fence News © News from the World of Fencing, Access Control and Security

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