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The scope of ICC 600-2008: Standard for Residential Construction in High-Wind Regions is to specify prescriptive methods to provide wind-resistant designs and construction details for residential buildings of masonry, concrete, wood-framed or cold-formed steel framed construction sited in high-wind regions.
This standard provides prescriptive requirements and other details of construction for buildings sited in wind climates of 100 to 150 mph in 10 mph increments.
This standard provides an adoptable, contemporary set of prescriptive requirements that supplement the International Residential Code provisions. The prescriptive requirements are based on the latest engineering knowledge and are intended to provide minimum requirements to improve structural integrity and improve building envelope performance within the limitations in building geometry, materials, and wind climate specified.
From the Preface
Most regions in the United States face windstorm threats. Hurricanes strike the Gulf and Atlantic coastal states one or more times per year with a single storm capable of causing billions of dollars in damage. The 2005 Atlantic hurricane season produced a record-breaking 27 named tropical storms, including a record 15 hurricanes. Of these a record four reached Category 5 strength, the highest categorization for hurricanes on the Saffir-Simpon Hurricane Scale. Five of the fifteen were major landfall hurricanes causing damages in Cuba, Mexico and the US states of Florida, Alabama, Mississippi, Louisiana and Texas. Currently the average wind damage to constructed facilities exceeds $3 billion yearly and is rising with accelerated coastal development and the migration of people to the hurricane prone coastlines. In 2004 and 2005 wind related damage exceeded $20 billion each year. Much of this damage can be attributed to the inadequate resistance of nonengineered buildings to high winds.
In 1983, two of the world's prominent wind researchers, G. R. Walker (Australia) and K.J. Eaton (United Kingdom) expressed their frustration concerning the inadequate performance of residential construction on a global scale:
"Basically, society has considered that housing does not warrant engineering analysis and design."
If property damage is to be mitigated in the high wind regions of this country, increased engineering attention must be given to residential construction. During the 1990s and first half of the 2000s, material associations including wood, masonry and steel, together with academics, product producers, engineers and code officials, were engaged in developing guidelines and standards that applied engineering knowledge and analysis to housing.
The International Code Council legacy standard SSTD 10-99 and its predecessors were the first US standards for high wind construction of residential structures. The ICC SSTD 10 document was based on the Standard Building Code wind loads and used fastest-mile wind speeds. The SSTD 10 standard was well received by builders and building officials in many parts of the country.
In 2001, both wood and steel associations published construction manuals and standards, respectively, that deal with high wind design with their materials. These are based on the ASCE 7 Wind Loads that are now the basis for defining wind loads in the International Building Code (IBC) and International Residential Code (IRC).
This standard provides a set of specifications that is consistent with the International Building Code and ASCE 7 wind loads, wind speed maps and conventions. See Appendix A for design load assumptions.
The primary focus of the update effort has been to provide a contemporary set of prescriptive requirements that supplement the International Residential Code provisions. The prescriptive requirements contained herein are based on the latest engineering knowledge and are intended to provide minimum requirements to improve structural integrity and improve building envelope performance within the limitations in building geometry, materials and wind climate specified.
Currently recognized within the IBC and IRC family of codes, the AF&PA Wood Frame Construction Manual (WFCM) and the AISI Standard for Cold-Formed Steel Framing - Prescriptive Method for One- and Two-Family Dwellings (ANSI/AISI S230) are consensus documents that provide design guidance for wood frame and cold-formed steel-framed buildings, respectively. These documents are adopted by reference in Chapter 3 for design of light-framed construction of wood or cold-formed steel.
The committee responsible for developing this standard recognized that a large number of alternatives are available to a designer or builder for providing wind resistance. The provisions given are not intended to prevent the use of alternate materials or methods permitted by Section 104.11 of the 2006 International Building Code and International Residential Code. Neither the ICC nor any reviewers make any representation or warranty of any kind, whether expressed or implied, concerning the accuracy, completeness and utility of any information provided in this publication and assumes no liability for use of the information. This information should not be used without obtaining competent advice concerning its suitability for the application under consideration. Anyone using this information assumes all liability arising from its use.
Table of Contents
Chapter 1: General Requirements. Chapter 2: Buildings with Concrete or Masonry Exterior Walls. Chapter 3: Buildings with Wood or Steel Light-Framed Exterior Walls. Chapter 4: Combined Exterior Wall Construction. Chapter 5: Roof Assemblies. Chapter 6: Fenestration. Chapter 7: Exterior Wall Covering. Chapter 8: Referenced Standards. Appendix A: Design Load Assumptions. Appendix B: Flood-Resistant Foundations for Residential Buildings with Wood for Light-Steel Framed Walls. Appendix C: ICC-600 Design Checklist. Appendix D: Dimensions of Nails Described by Penny-Weight System.
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