Section 27-274. Classification  


Latest version.
  • Buildings  or  spaces  in  noncombustible
      construction group I are those in which  the  walls,  exitways,  shafts,
      structural  members, floors, and roofs are constructed of noncombustible
      materials and assemblies affording the fire-resistance ratings specified
      in table 3-4.  The  noncombustible  construction  group  I  consists  of
      classes I-A, I-B, I-C, I-D, and I-E.