2006 New York Code - Additional Requirements For High Rise Office Buildings And Occupancy Group E High Rise Buildings.

 
    §  27-383.1 Additional requirements for high rise office buildings and
  occupancy group E high rise buildings. In high rise office buildings and
  in occupancy group E high rise buildings:
    (a) Illuminated exit signs  complying  with  section  27-386  of  this
  subchapter  shall  be placed in stairwells with horizontal extensions to
  indicate the transition from vertical to  horizontal  direction  and  at
  turns along the horizontal path.
    (b)  A supplementary sign complying with sections 27-394 and 27-395 of
  this subchapter, except that the lettering  and  numerals  shall  be  at
  least  one  inch  high,  indicating  the location of a recessed re-entry
  door, shall be securely attached on the wall of the landing  that  faces
  the evacuee on the stairs.
    (c)  In  stairs where there is no entry or exiting from such stair for
  more than four floors, a sign complying with sections 27-394 and 27-395,
  except that the lettering and numerals shall be at least one inch  high,
  shall  be  securely  attached  at the beginning of the descent into such
  portion of the stair on the wall of the landing that faces  the  evacuee
  on  the  stairs  stating  the  location  of the next re-entry or exiting
  floor. On each floor within such portion of the stair a  sign  complying
  with  sections  27-392 and 27-395 shall be securely attached to the wall
  of the landing that faces the evacuee on the stairs  approximately  five
  feet above the floor indicating the floor number.
    (d) Signs shall be readily visible from the egress direction.
    (e)  High  rise office buildings and high rise buildings classified in
  occupancy group E in existence on the effective  date  of  this  section
  shall  comply  with  this  section  on  or  before July 1, 2007. For the
  purpose of this section, a high rise building shall be deemed to  be  in
  existence  on  the  effective  date of this section if on such effective
  date it is complete or under construction or where  an  application  for
  approval  of plans was filed with the department prior to such effective
  date and construction commenced within two years  after  such  effective
  date.