Today the window of escape time in flaming fires is 3 minutes compared to 17 minutes in 1976 because fires today burn hotter and faster therefore leaving people less time to safely escape than 40 years ago. Smoke alarms and fire alarm systems provide value when building occupants are awake, but their greatest benefit is when the occupants are asleep. Numerous research studies have concluded that a low frequency audible alarm signal with a fundamental frequency of 520 Hz is the most effective signal for awakening people who are hard of hearing, school age children and the elderly.
Participants will learn about the International Building Code (IBC) which includes provisions related to fire alarm systems and their requirements for diverse types of buildings. It has specific requirements for low frequency audible alarm signals in certain situations.
International Fire Code (IFC) addresses fire prevention, protection, and emergency response. It has specific requirements for low frequency audible alarm signals.
Americans with Disabilities Act (ADA): The ADA Accessibility Guidelines may also apply to the installation and use of low frequency alarm signals to ensure accessibility for individuals with disabilities. NOTE: The current ICC A117.1 is silent on low frequency. However, there should be specific low frequency requirements in the next edition.
Specific requirements and codes that apply to low frequency audible alarm signals in a particular location or building. AHJs provide guidance on compliance with applicable codes and standards to ensure the safety and effectiveness of the fire alarm system.
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