Doors which are not designated as components of the exit access are not components of the means of egress.TJacobs said:2006 IBC:MEANS OF EGRESS. A continuous and unobstructed path of vertical and horizontal egress travel from any occupied portion of a building or structure to a public way. A means of egress consists of three separate and distinct parts: the exit access, the exit and the exit discharge.
1008.1.9 Panic and fire exit hardware.
Where panic and fire exit hardware is installed, it shall comply with the following:
1. The actuating portion of the releasing device shall extend at least one-half of the door leaf width.
2. The maximum unlatching force shall not exceed 15 pounds (67 N).
Each door in a means of egress from a Group A or E occupancy having an occupant load of 50 or more and any Group H occupancy shall not be provided with a latch or lock unless it is panic hardware or fire exit hardware.
Exception: A main exit of a Group A occupancy in compliance with Section 1008.1.8.3, Item 2.
What is unclear about the text? Any room or space? 50 or more? Each door? It is not just the exit door, it is all doors in the means of egress from rooms or spaces with 50 or more occupants. Period. No interp necessary.
By your logic, if there is a closet in an assembly space with fifty or more occupants it cannot be locked and must have panic hardware.
Interpretation may not be necessary, but a modicum of common sense is.