2006 New York Code - Classification.

 
    §   27-280   Classification.   Buildings  and  spaces  in  combustible
  construction  group  II  are  those  in  which  the  walls,  partitions,
  structural  members,  floors, and roofs are constructed wholly or partly
  of   combustible   materials   affording   the   required   degree    of
  fire-resistance  specified  in  table  3-4. The combustible construction
  group II consists of classes II-A, II-B, II-C, II-D, and II-E.