Section 27-237. Occupancy groups

Table 3-1 lists occupancy groups and sub
  groups that shall be established for classifying buildings and spaces in
  accordance with the provisions of articles three through twelve of  this
  subchapter.
 
                     Table 3-1 Occupancy Classifications
                                                                  Fire
    Occupancy Group     Classification                            Index
          A           High hazard                                   4
          B-1         Storage (moderate hazard)                     3
          B-2         Storage (low hazard)                          2
          C           Mercantile                                    2
          D-1         Industrial (moderate hazard)                  3
          D-2         Industrial (low hazard)                       2
          E           Business                                      2
          F-1a        Assembly (theaters, etc.)                     1
          F-1b        Assembly (churches, concert halls, etc.)      1
          F-2         Assembly (outdoors)                           1
          F-3         Assembly (museums, etc.)                      1
          F-4         Assembly (restaurants, etc.)                  1
          G           Education                                     1
          H-1         Institutional (restrained)                    1
          H-2         Institutional (incapacitated)                 1
          J-1         Residential (hotels, etc.)                    1
          J-2         Residential (apartment houses, etc.)          1
          J-3         Residential (one-and two-family dwellings)    1
          K           Miscellaneous