Informational Bulletin

Transcription

1 Informational Bulletin March 2007 Bulletin #31 *Replaces Informational Bulletin #8 Updated Impact Requirements for Building Components This Bulletin presents a general overview of the current impact requirements as stipulated in the 2004 Florida Building Code (FBC), the Texas Department of Insurance and the 2003 and 2006 IBC and IRC Codes. This information is subject to change and in certain cases subject to revision or amendment by local building officials. Florida Building Code, 2004: Florida has two distinct regions requiring wind-borne debris protection: High Velocity Hurricane Zone and Wind-Borne Debris Regions. All building envelope products sold in Florida must be approved by the Florida Product Approval program. High Velocity Hurricane Zone: The FBC defines High Velocity Hurricane Zone (HVHZ) as Miami-Dade and Broward Counties. Here, county-wide basic wind speeds and Exposure C are mandated. Also, the entire building envelope must be resistant to wind-borne debris. Large missile protection is required below 30' elevation, and small missile protection is required above 30' elevation. Reference should be made to FBC Section 1626, FBC Sections 2410 through 2415, FRC Section R301, R440 and R4410. All testing of products shall be performed to HVHZ Protocols TAS 201, TAS 202 and TAS 203. Wind-Borne Debris Regions (2006 Supplement of 2004 Code) are defined as: 1) Areas within one mile of the coastal mean high water line where the basic wind speed is 110 mph or greater; and 2) Areas where the basis wind speed is 120 mph or greater except from the eastern border of Franklin County to the Florida-Alabama line where the region includes areas where design to wind speeds of 130 mph or higher wind speeds are required and areas within 1500 feet of the mean high coastal water line. (See Figure 1). Exterior glazing of doors and windows shall be impact resistant or protected. Large missile protection is required below 30' elevation, and small missile protection is required between 30' elevation and 60' elevation. Testing shall be performed to ASTM E and ASTM E , or TAS 201 and TAS 203 or SSTD Specific provisions for storm shutter and exterior protective devices are found in FBC Section Section 2411 refers to windows, doors, glass and glazing; Section 2412 is for glass veneers; Section 2414 covers curtain walls; and Section 2415 references structural glazing systems. The Florida Building Code is approaching a revision period and Florida law has a proposed revision to the Wind-Borne Debris Region that would totally eliminate the Panhandle exclusion in the Florida Building Code, 2007 (See Figure 2).

2 March 2007, Updated Impact Requirements for Building Components Page 2 of 7 Texas Windstorm Insurance Association Texas Department of Insurance Since January 1, 2005, the 2003 International Residential Code (IRC) with Texas Revisions and the 2003 International Building Code (IBC) with Texas Revisions have been in effect. These rules apply to the designated 14-county coastal catastrophe area, which is divided into 3 zones. The zones are Seaward, Inland I and Inland II (see Figure 3). All door and window products sold in the coastal catastrophe area must be approved by the Texas Department of Insurance. Seaward of the Intracoastal Canal, all unprotected exterior openings (windows, doors, skylights and garage doors) shall be impact resistant and subject to 130 mph 3 second gust design. Inland I, which is inland of the Intracoastal canal, is subject to the 120 mph 3-second wind gust design and all glazed exterior openings shall be protected or impact resistant. Inland of the 120 mph contour is Inland II. Here, there are no impact requirements and design pressures are determined by 110 mph 3- second wind gust design. Products required to be impact resistant will be tested to the large missile test if located between grade and 30' elevation and the small missile test if located between 30' and 60' elevation. The reference standards for impact testing and fatigue cycling are ASTM E and ASTM E International Building Code, 2000/2003 Section Wind-borne Debris Region, is defined as areas within 1 mile of the coast and 110 mph or where the basic wind speed is greater than 120 mph. Exterior glazing of doors and windows shall be impact resistant or protected. Large missile protection is required below 30' elevation, and small missile protection is required between 30' elevation and 60' elevation. Testing shall be performed to the following: ASTM E and ASTM E for the 2000 IBC and ASTM E and ASTM E for the 2003 IBC. The 2003 Code has a requirement that windows are tested and labeled for air/water/structural performance, but there is only the testing requirement for wind-borne debris performance. Wind load resistance of shutters is proven by ASTM E330. International Building Code, 2006 Section Wind-borne Debris Region: Portions of hurricane-prone regions within 1 mile of the coastal mean high water line where the basic wind speed is 110 mph or greater; or portions of hurricane-prone regions where the basic wind speed is 120 mph or greater; or Hawaii. Exterior glazing of doors and windows shall be impact resistant or protected. Large missile protection is required below 30' elevation, and small missile protection is required above 30' elevation. Testing shall be performed to ASTM E and ASTM E The 2006 Code has a requirement that windows are tested and labeled for air/water/structural performance, but there is only the testing requirement for wind-borne debris performance. Wind load resistance of shutters is proven by ASTM E330. State-by-State The information presented below for other states with coastal regions is per the International Code Adoptions Map found at This information changes on a regular basis and is subject to local adoption. A useful summary chart is presented on Page 7.

3 March 2007, Updated Impact Requirements for Building Components Page 3 of 7 Building Codes based on 2000 IBC/IRC* Building Code of New York State 2003 Georgia Building Code (with 2005 Revisions) New Hampshire Delaware Building Code (jurisdictional based) Mississippi (jurisdictional based) Louisiana (jurisdictional based) Texas Statewide (IRC - also check for jurisdictional adoptions) Building Codes based on 2003 IBC/IRC* Maine Massachusetts Building Code (7 th Edition, adopted not yet effective) 2005 Connecticut Building Code North Carolina State Building Code, 2006 Edition South Carolina Building Code Alabama State Building Code Virginia Statewide Building Code Maryland Building Performance Standards Delaware Building Code (jurisdictional based) Rhode Island State Building Code Vermont (2003 IBC) Connecticut Georgia (Sugar Hill jurisdiction) Alabama Statewide (IBC - also check for jurisdictional adoptions) Mississippi (jurisdictional based) Louisiana (jurisdictional based) Texas Statewide (IBC - also check for jurisdictional adoptions) Building Codes based on 2006 IBC/IRC* New Jersey Building Code (as of February 20, 2007) Georgia Mississippi (jurisdictional based) Louisiana Statewide (also check for jurisdictional adoptions) Texas (also check for jurisdictional adoptions) * ICC makes every effort to provide current, accurate code adoption information, but in some cases jurisdictions do not notify ICC of adoptions, amendments or changes to their codes. To ensure you have accurate information, please contact the jurisdiction directly.

4 March 2007, Updated Impact Requirements for Building Components Page 4 of 7 Figure FBC Wind-Borne Debris Requirements (2006 Supplement) Wind Borne Debris Region: 1) Areas within one mile (1.6 km) of the coastal mean high water line where the basic wind speed is 110 mph (49 m/s)or greater. 2) Areas where the basis wind speed is 120 mph (53 m/s) or greater except from the eastern border of Franklin County to the Florida-Alabama line where the region includes areas only within 1 mile of the coast where design to wind speeds of 130 mph or higher wind speeds are required and areas within 1500 feet of the mean high coastal water line. Note: This map and definition was obtained from the 2006 Supplement of the 2004 Florida Building Code

5 March 2007, Updated Impact Requirements for Building Components Page 5 of 7 Figure FBC Wind-Borne Debris Requirements (Proposed) Note: This map was obtained from the following website:

6 March 2007, Updated Impact Requirements for Building Components Page 6 of 7 Figure 3 Texas First Tier Coastal Counties

7 March 2007, Updated Impact Requirements for Building Components Page 7 of 7 Regional laboratories and offices are located Corporate Headquarters throughout North America (labs in PA, MN, TX, Architectural Testing, Inc. CA, WI, WA, and FL; offices in PA, GA, NC, 130 Derry Court IL, MO, CA, and OH.) York, PA Visit for the location nearest you. Phone: Fax: