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Monitoring Invalid Alarms
This post is brought to you from one of our 2021 Sponsors. All American Monitoring has been family owned since 1973. They know the alarm business well, and the work it takes to build a business. Collaboration is the cornerstone of the company philosophy, because when...
What is “Runner Service”?
Runner service is a service required for Proprietary Supervising Station and Central Supervising Station Fire Alarm Systems.
Communications Methods for Fire Alarm
NFPA 72 currently recognized four methods of communication from the protected premises to the supervising station for fire alarm systems.
Future of Integration Business
This post is brought to you from one of our 2021 Sponsors. The National Systems Contractors Association (NSCA) is the leading not-for-profit association representing the commercial integration industry.
“Other Articles” of NFPA 70
Article 760.3 (Other Articles) identifies other sections of NFPA 70 that also apply to fire alarm systems.
The Point 7 Rule for Heat Detectors
While the Point 7 Rule can be mathematically calculated for heat detectors and applied to rectangular area and corridor applications, thankfully, the math has already been done for us in NFPA 72.
The Point 7 Rule
NFPA 72 requires that all points on the ceiling have a detector within a distance of 0.7 times the listed spacing of the detector.
Code Question – Blocking with a Bookcase
Code Question – Is there language in the code that specifically prohibits blocking a fire alarm device (like a horn/strobe or pull station) with a bookcase?
Beam and Joists
When a ceiling surface has solid projection more than 4 inches, the distance between the projections center to center determines whether the projection is a joist or beam.
Positive Alarm Sequence and Presignal Systems
Positive alarm sequence and presignal systems delay occupant notification to allow for time for investigation of a fire. While both systems delay occupant notification, the function of the features and where they are permitted are different.