Issue link: https://www.e-digitaleditions.com/i/101169
What���s the Difference? The greatest differences between the ASTM Standard and the HVHZ Testing Protocols (Testing Application Standards) are found in the number and location of missile strikes and the offset criteria related to deflection. The HVHZ Protocols (TAS 201 and 203) and ASTM E 1996, Wind Zone 4 provisions require each specimen to withstand two strikes for the large missile test. ASTM E 1996 Wind Zones 1, 2 and 3 require a single strike to each specimen. In addition, in Wind Zone 4 the Standard calls for strikes directly on integral mullions and other intermediate members. Even more disconcerting are the requirements related to the offset of the impact protective systems. In Wind Zone 4, all impact protective systems are required to comply with the greater of the maximum deflection measured in accordance with Section 5.5, plus 25 percent, or the sum of the maximum deflection and residual deflection, as measured at Section 5.5, plus 25 percent. (ASTM E 1996-2005) ASTM E 1996-2006 and 2009 modify the requirements to apply to all non-porous systems in Wind Zone 4 requiring an offset of the greater of the maximum dynamic deflection measured at Section 5.5, plus 2 mm; or the sum of the maximum deflection and residual deflection as measured at Section 5.5, plus 2 mm. (ASTM E 1996-2006 and 2009, ��8.3) In the field, these requirements result in an offset of from three inches to more than eight inches depending on the materials used and the design of the impact protective system. The requirements add cost to the manufacturing of products as well as to the testing of products and go beyond the intent of the adopted standard. Following is the language the Florida Building Commission has adopted for the 2010 Florida Building Code, Building, in a supplement. The same language except Section designations was accepted for the Florida Building Code, Residential. IHPA intends to submit the changes to the International Codes at the earliest available code change cycle. ��� 1609.1.2.2 Modifications to ASTM E 1996. Section 6.2.2 of ASTM E 1996 shall be modified as follows: ��� 6.2.2 Unless otherwise specified, select the wind zone based on the basic wind speed as follows: ��� 6.2.2.1Wind Zone 1 - 130 mph ��� basic wind speed < 140 mph,and Hawaii. ��� 6.2.2.2 Wind Zone 2 - 140 mph ��� basic wind speed < 150 mph at greater than 1.6 km (one mile) from the coastline. The coastline shall be measured from the mean high water mark. ��� 6.2.2.3 Wind Zone 3 - 150 mph (58 m/s) ��� basic wind speed < 160-170 mph (63 m/s), or 140 mph (54 m/s) ��� basic wind speed ��� 160-170 mph (63 m/s) and within 1.6 km (one mile) of the coastline. The coastline shall be measured from the mean high water mark. ��� 6.2.2.4 Wind Zone 4-basic wind speed > 160-170 mph (63 m/s). Complete Range of Motors, Controls and Automation for Rolling Shutters SIMU-Hz radio solutions offer: Quick and easy installation Ease of use Energy saving benefits SIMU Celebrates 60 Year Anniversary, 1952-2012 www.simu.com IBS PREVIEW 2013 / STORM & SECURITY PROTECTION 11