Wall-mounted protruding objects maintain a maximum 4-inch protrusion when located between 27 inches and 80 inches above the finished floor, with free-standing post-mounted objects limited to a 12-inch maximum overhang. Fire alarm pull stations are positioned between 42 inches and 48 inches above the finished floor. Wall-mounted fire alarm audio-visual devices are located at a maximum height of 90 inches or 6 inches below the ceiling, whichever is lower.
FIRE ALARM PULL STATIONS FIRE ALARM AUDIO-VISUAL, WALL MOUNTED PROTRUDING OBJECTS 4" MAX. > 27" 6" WHICHEVER IS LOWER 90" OR 6" BELOW CEILING BOTTOM OF CEILING 48" MAX. 42" MIN. 80" PER 11B-307: FREE-STANDING OBJECTS MOUNTED ON POSTS SHALL OVERHANG CIRCULATION PATHS 12" MAX. WHEN LOCATED 27" MIN. AND 80" MAX. A.F.F. WHERE SIGN OR OTHER OBSTRUCTION IS MOUNTED BETWEEN POSTS AND THE CLEAR DISTANCE BETWEEN POSTS IS GREATER THAN 12", THE LOWEST EDGE OF SUCH SIGN OR OBSTRUCTION SHALL BE 27" MAX. OR 80" MIN. A.F.F.
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