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Published byAnthony Benson Modified over 9 years ago
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Building Classifications: Occupancies
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Most things have classifications Objective classifications Drivers’ licenses Hazardous materials Tests and assignments (hopefully) Subjective classifications Social status Favorite movies
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Provide an essential building block in developing an effective building code Occupancy Based on how it will be used Construction type Based on the type of construction used
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Oversight organizations Uniform Building Code (UBC) First published in 1927 International Council of Building Officials Promoted public safety & standardized safe construction International Building Code (IBC) Replaced the UBC in 2000 International Code Council (ICC) ICC was a merger of: International Council of Building Officials (ICBO) Uniform Building Code Building Officials and Code Administrators International (BOCA) The BOCA National Building Code Southern Building Code Congress International (SBCCI) Standard Building Code Primarily used in North America
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UBC definition: “The purpose that a building, or part thereof, is used or intended to be used Essentially how the building will be used IBC Does not specifically define occupancy
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UBC placed the responsibility on building official Conflict with architects (designing without knowing code regulations) IBC does not specify who IBC states “structures will be classified with respect to occupancy” Architects can legally determine occupancy code, building official can agree or not
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IBC has ten occupancy groups Many have subgroups Subgroups are numbered Lower number = greater perceived risk
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Most assigned strictly on intended use/uses Many building have areas that have different uses. Using a fire department as an example: Storage of equipment Sleeping Meeting Office Considered “mixed occupancies”
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Incidental use areas Provide minor support to main occupancy code Storage, mechanical, specialty areas Does not meet minimum size requirements Assembly = 705 sq. ft. Based on 50 people x 15 sq. ft. per person
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Assembly: Groups A-1, A-2, A-3, A-4 and A-5 Business: Group B Educational: Group E Factory and Industrial: Groups F-1 and F-2 High Hazard: Groups H-1, H-2, H-3, H-4 and H-5
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Institutional: Groups I-1, I-2, I-3 and I-4 Mercantile: Group M Residential: Groups R-1, R-2, R-3 and R-4 Storage: Groups S-1 and S-2 Utility and Miscellaneous: Group U
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http://www.specsandcodes.com/Articles.htm# CodeArticles http://www.specsandcodes.com/Articles.htm# CodeArticles http://www.specsandcodes.com/Articles/The% 20Code%20Corner%20No.%2014%20- %20Building%20Classification%20Part%201% 20-%20Occupancies.pdf http://www.specsandcodes.com/Articles/The% 20Code%20Corner%20No.%2014%20- %20Building%20Classification%20Part%201% 20-%20Occupancies.pdf
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