Code that represents the AIR occupancy class.
    - 300 = Unknown
 
    - 301 = Residential, General residential
 
    - 302 = Residential, Permanent dwelling: single-family
 
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            303 = Residential, Permanent dwelling: multi-family
        
     
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            304 = Residential, Temporary lodging
        
     
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            305 =  Residential, Group institutional housing
        
     
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            306 = Residential, Apartment/Condo    
        
     
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            307 = Residential, Terraced Housing
        
     
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            311 = Commercial, General commercial
        
     
    - 
        
            312 = Commercial, Retail trade
        
     
    - 
        
            313 = Commercial, Wholesale trade
        
     
    - 
        
            314 = Commercial, Personal and repair services
        
     
    - 
        
            315 = Commercial, Professional, technical and business
        
     
    - 
        
            316 = Commercial, Health care services
        
     
    - 
        
            317 = Commercial, Entertainment and recreation
        
     
    - 
        
            318 = Commercial, Parking
        
     
    - 
        
            319 = Commercial, Golf Courses
        
     
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            321 = Industrial, General industrial
        
     
    - 
        
            322 = Industrial, Heavy fabrication and assembly
        
     
    - 
        
            323 = Industrial, Light fabrication and assembly
        
     
    - 
        
            324 = Industrial, Food and drug processing
        
     
    - 
        
            325 = Industrial, Chemical processing
        
     
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            326 = Industrial, Metal and minerals processing
        
     
    - 
        
            327 = Industrial, High technology
        
     
    - 
        
            328 = Industrial, Construction
        
     
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            329 = Industrial, Petroleum
        
     
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            330 = Industrial, Mining
        
     
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            331 = Restaurants, Restaurants
        
     
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            335 = Mercantile, Gasoline Stations
        
     
    - 
        
            336 = Mercantile, Automotive repair services and carwash
        
     
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            341 = Religion and Nonprofit Religion and nonprofit
        
     
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            342 = Religion and Nonprofit, Church
        
     
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            343 = Government, General services
        
     
    - 
        
            344 = Government, Emergency services
        
     
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            345 = Education, Universities, colleges and technical schools
        
     
    - 
        
            346 = Education, Primary and secondary schools 
        
     
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            351 = Transportation, Highway
        
     
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            352 = Transportation, Railroad
        
     
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            353 = Transportation, Air
        
     
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            354 = Transportation, Sea and inland waterways
        
     
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            355 = Transportation, Aircraft Hangars
        
     
    - 
        
            356 = Transportation, Aircrafts at ramps or boarding gates
        
     
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            361 = Utilities, Electrical
        
     
    - 
        
            362 = Utilities, Water
        
     
    - 
        
            363 = Utilities, Sanitary sewer
        
     
    - 
        
            364 = Utilities, Natural gas
        
     
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            365 = Utilities, Telephone and telegraph
        
     
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            366 = Commercial, Warehouse
        
     
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            367 = Damageable Land
        
     
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            371 = Miscellaneous, Communication
        
     
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            372 = Flood control
        
     
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            373 = Agriculture
        
     
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            374 = Green House
        
     
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            375= Forestry
        
     
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            381 = Miscellaneous, Construction/Erection Risks 
        
     
    - 
        
            382 = Residential, Construction/Erection Risks
        
     
    - 
        
            383 = Commercial, Construction/Erection Risks
        
     
    - 
        
            384 = Industrial, Construction/Erection Risks
        
     
    - 
        
            400 = Industrial Facilities Model, IFM: Unknown
        
     
    - 
        
            401 = Industrial Facilities Model, IFM: Heavy Fabrication and Assembly - General
        
     
    - 
        
            402 = Industrial Facilities Model, IFM: Automotive Manufacturing
        
     
    - 
        
            403 = Industrial Facilities Model, IFM: Fabricated Metal Products
        
     
    - 
        
            404 = Industrial Facilities Model, IFM: Industrial and commercial machinery and equipment
        
     
    - 
        
            405 = Industrial Facilities Model, IFM: Transportation Equipment Assembly
        
     
    - 
        
            406 = Industrial Facilities Model, IFM: Pulp/Paper and Allied Products Manufacturing
        
     
    - 
        
            407 = Industrial Facilities Model, IFM: Textile Mill Product
        
     
    - 
        
            408 = Industrial Facilities Model,  IFM: Lumber and wood products (excluding furniture)
        
     
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            409 = Industrial Facilities Model, IFM: Stone/Clay/Glass/Ceramics products
        
     
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            414 = Industrial Facilities Model, IFM: Light Fabrication and Assembly - General
        
     
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            415 = Industrial Facilities Model, IFM: Furniture and Fixtures
        
     
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            416 = Industrial Facilities  Model, IFM: Apparel and finished products from fabrics
        
     
    - 
        
            417 = Industrial Facilities Model, IFM: Print/Publishing and allied industry 
        
     
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            418 = Industrial Facilities Model, IFM: Rubber and miscellaneous plastics products
        
     
    - 
        
            419 = Industrial Facilities Model, IFM: Leather and Leather products
        
     
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            420 = Industrial Facilities Model, IFM: Electronic and other electrical equipment (except computer equipment)
        
     
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            421 = Industrial Facilities Model, IFM: Measuring analyzing and controlling instruments
        
     
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            422 = Industrial Facilities Model, IFM: Photographic medical and optical goods
        
     
    - 
        
            423 = Industrial Facilities Model, IFM: Watches and clocks
        
     
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            424 = Industrial Facilities Model, IFM: Miscellaneous Light Manufacturing Industries
        
     
    - 
        
            425 = Industrial Facilities Model, IFM: Tire manufacturers
        
     
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            429 = Industrial Facilities Model, IFM: Food and Drug Processing  - General
        
     
    - 
        
            430 = Industrial Facilities Model, IFM: Food and kindred products
        
     
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            431 = Industrial Facilities Model, IFM: Tobacco products
        
     
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            432 = Industrial Facilities Model, IFM: Pharmaceutical plants
        
     
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            433 = Industrial Facilities Model, IFM: Biological Products  (except diagnostic) - Medicinals/Botanical/Biomedical
        
     
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            434 = Industrial Facilities Model, IFM: Wineries
        
     
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            438 = Industrial Facilities Model, IFM: Chemical Processing - General
        
     
    - 
        
            439 = Industrial Facilities Model, IFM: Chlorine plants       
        
     
    - 
        
            440 = Industrial Facilities Model, IFM: Vinyl plants
        
     
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            441 = Industrial Facilities Model, IFM: Light hydrocarbon or aromatics plants
        
     
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            442 = Industrial Facilities Model, IFM: Plastics plants
        
     
    - 
        
            443 = Industrial Facilities Model, IFM: Chlorhydrin plants
        
     
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            444 = Industrial Facilities Model, IFM: Fertilizer plants
        
     
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            445 = Industrial Facilities Model, IFM: Cement plants/Cement Mills
        
     
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            446 = Industrial Facilities Model, IFM: Other Chemical and Allied Products
        
     
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            449 = Industrial Facilities Model, IFM: Metal and Minerals Processing  - General
        
     
    - 
        
            450 = Industrial Facilities Model, IFM: Primary metal industry
        
     
    - 
        
            451 = Industrial Facilities Model, IFM: Steel Mills
        
     
    - 
        
            452 = Industrial Facilities Model, IFM: Smelters
        
     
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            455 = Industrial Facilities Model, IFM: High Technology - General
        
     
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            456 = Industrial Facilities Model, IFM: Semi-conductor and related devices
        
     
    - 
        
            457 = Industrial Facilities Model, IFM: Electronic computer devices
        
     
    - 
        
            458 = Industrial Facilities Model, IFM: Computer storage devices
        
     
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            459 = Industrial Facilities Model, IFM: Electron tubes
        
     
    - 
        
            460 = Industrial Facilities Model, IFM: Printed circuit boards
        
     
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            463 = Industrial Facilities Model, IFM: General building/ construction contractors
        
     
    - 
        
            464 = Industrial Facilities Model, IFM: Heavy Constructions
        
     
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            465 = Industrial Facilities Model, IFM: Special Trade Contractors
        
     
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            470 = Industrial Facilities Model, IFM: Mining - General
        
     
    - 
        
            471 = Industrial Facilities Model, IFM: Mining operations
        
     
    - 
        
            472 = Industrial Facilities Model, IFM: Metal mining
        
     
    - 
        
            473 = Industrial Facilities Model, IFM: Coal mining
        
     
    - 
        
            474 = Industrial Facilities Model, IFM: Mining /Quarrying - Non-metallic mineral (except fuels_
        
     
    - 
        
            475 = Industrial Facilities Model, IFM: Oil Refinery Systems - General
        
     
    - 
        
            476 = Industrial Facilities Model, IFM: Hydro-Electric Power Systems  - General
        
     
    - 
        
            477 = Industrial Facilities Model, IFM: Thermo-Electric Power Systems  - General
        
     
    - 
        
            478 = Industrial Facilities Model, IFM: Nuclear Power Systems All - General
        
     
    - 
        
            479 = Industrial Facilities Model, IFM: Electric Substation - General
        
     
    - 
        
            480 = Industrial Facilities Model, IFM: Potable water Systems - General
        
     
    - 
        
            481 = Industrial Facilities Model, IFM: Waste water treatment Systems  - General
        
     
    - 
        
            482 = Industrial Facilities Model, IFM: Gas Processing Systems - General
        
     
    - 
        
            483 = Industrial Facilities Model, IFM Communication Systems - General
        
     
    - 
        
            484 = Agriculture Systems - General
        
     
    - 
        
            485 = Industrial Facilities Model, IFM: Bus Systems - General
        
     
    - 
        
            486 = Industrial Facilities Model, IFM: Port Systems
        
     
    - 
        
            487 = Industrial Facilities Model, IFM: Ferry Systems
        
     
    - 
        
            488 = Industrial Facilities Model, IFM: Airport Systems - General
        
     
    - 
        
            900 = Offshore, Unknown
        
     
    - 
        
            901 = Offshore, Oil production only
        
     
    - 
        
            902 = Offshore, Gas production only
        
     
    - 
        
            903 = Offshore, No production
        
     
    - 
        
            904 = Offshore, Oil and gas production
        
     
    - 
        
            905 = Offshore, Drilling
        
     
    - 
        
            906 = Offshore, Workover
        
     
    - 
        
            907 = Offshore, Ready stacked
        
     
    - 
        
            908 = Offshore, Waiting on location
        
     
    - 
        
            909 = Offshore, Pipelines