Exit, stage right

The National Fire Protection Association (NFPA) Life Safety Code says, and for good reason, that you can't block or lock theatre exits during periods of occupancy. Doors, if equipped with latches and / or locks must be readily operable by anyone needing to exit the building.

The picture above shows a locking bar that was installed up-side-down (note the "Lift Up" text):


The locking bar is pinned in place by TWO hairpin cotter pins (one visible at each end).







And the right leaf has a dead-bolt that pins into the floor at the bottom (which probably would not be visible should a crowd of people rush the door)







Additionally, the signage applied to the door should be worded:
NOTICE: This door shall remain unlocked during occupancy.