Section 27-457. Exits

Public  garages shall be provided with at least two
  exits from each tier of parking. One of the exits may be a ramp used  by
  motor  vehicles,  when  serving not more than one level below grade. All
  vertical exits shall have a minimum width of thirty-six inches and shall
  be enclosed in two hour fire-resistive construction, except as permitted
  by section 27-458 of article ten of subchapter seven of this chapter. No
  exit in a group 1 public garage shall have a path of  travel  through  a
  fuel  dispensing  area.  In group 2 public garages occuring in occupancy
  group  J-2  buildings,  overhead  doors  shall  be  of   the   automatic
  self-closing type.
    (a)  Travel distance. No point in any public garage shall be more than
  one hundred feet  from  an  exit,  except  that  such  distance  may  be
  increased   to   one  hundred  fifty  feet  when  the  garage  is  fully
  sprinklered.
    (b) Repair and fuel spaces. Spaces in group 1 public garages used  for
  the repair of motor vehicles or the dispensing of fuel shall be provided
  with  at  least  two  exits,  within  the travel distance limitations of
  subdivision (a) of this section.
    (c) Roof parking. When the roof of a building  is  used  for  parking,
  interior  vertical  exits shall be enclosed in a bulkhead constructed as
  required by subchapter five of this chapter.