What is the maximum distance manual fire alarm boxes may be mounted from each side of a grouped opening that exceeds 40 feet in width?

The maximum distance manual fire alarm boxes may be mounted from each side of a grouped opening that exceeds 40 feet in width is specified to ensure that individuals can easily access the alarm in an emergency situation. According to the National Fire Protection Association (NFPA) standards, the requirement for accessibility emphasizes that manual fire alarm boxes should be located at an appropriate height and distance within reach for both able-bodied individuals and those with disabilities.

In this case, the correct answer is based on regulations that dictate that manual fire alarm boxes must be placed no more than 60 inches from the nearest edge of the opening. This ensures that the alarms are easily reachable in case of a fire, facilitating a prompt response to alert others and initiate emergency procedures. The intent behind this regulation is to enhance safety and provide quick access to alarm systems, particularly in wide spaces where individuals may need to reach the alarm quickly and efficiently.

The other options do not meet the regulatory distance needed for effective accessibility, which is crucial for a timely response in emergency situations. Hence, 60 inches is established as the guideline to maximize safety and accessibility near wide openings.