(a) Subdivision of building spaces must be as required by NFPA 101.(b) The facility must maintain the integrity of smoke barrier walls, including those parts of walls in attics and other concealed spaces.(c) The facility must maintain the integrity of smoke dampers in air ducts.(d) Ducts with smoke dampers must have maintenance panels for inspection. The maintenance panels must be removable without tools. Means of access must also be provided in the ceiling or side wall to facilitate smoke damper inspection readily and without obstruction. Location of dampers must be identified on the wall or ceiling of the occupied area below.