Fire Alarm Pull Station Height Requirements

Alarms should initiate by manual fire alarm boxes commonly called pull stations 14 3 4 2 1 and 15 3 4 2 1 but the code allows for the exclusion of manual boxes in some spaces such as laboratories and cafeterias serviced by an automatic sprinkler system or other detection devices 14 3 4 2 3 1 and 15 3 4 2 3 1. Manual fire alarm boxes pull stations the height of the manual fire alarm boxes shall be a minimum of 42 inches and a maximum of 54 inches measured vertically from the floor level to the activating handle or lever of the box. The requirements for manual pull stations as per nfpa 72 are pretty trivial and straight forward.

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Below we have an picture of a typical manual pull station.

Fire alarm pull station height requirements.

Nfpa 72 requires that manual pull stations be installed within 60 inches of the exit doorway of each exit mounted between 42 inches and 48 inches to the center of the handle and among other things be red in color. In addition the pull lever should be within reach range or between 48 inches and 15 inches above the finish floor or ground. In addition the requirements for visible fire alarms are required to meet the following standards. If the path to the ada compliant fire extinguisher or pull station is unobstructed the operable part must be placed from 15 inches to 48 inches off of the finished floor or ground.

Manual fire alarm boxes shall be red in color. In this case height is measured from the floor to the operable part of each manual fire alarm box according to section 5 13 4 of nfpa 72 2007 edition mounting height must be between 3 and 4 feet from floor to handle. But when the wheelchair user must reach over an obstruction these heights may change. Under the ada audible alarms must have a sound level that is not greater than 110 db.

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