Why are fire alarms so loud?
You've probably been to a concert, listened to the sound of a fighter plane, or passed by a jackhammer on a construction site. People avoid loud environments because it can cause hearing loss in the future. This raises the question: Why are fire alarms so loud? Is there anything you can do for your ears to be protected from the noise? How loud are fire alarms? NFPA 72 outlines requirements for fire alarm notification devices, which can take two forms: audible or visible. Sirens and horns sound the alarm, sounding at 65 to 120 decibels (dB). are less than 10 feet away from the device. The visible alert is provided by the stave lights, which flash once per second at 15 to 1000 candelas depending on the setting. It is clear that repeated and prolonged exposure to loud noises can cause hearing loss. According to the National Institute on Deafness and Other Communication Disorders, 85dB or greater is considered the highest risk zone for hearing loss. These noise examples will help you