An electrical circuit’s survivability in harsh conditions is defined by the method of its installation. Some circuits that are relied upon to supply power to critical functions related to life safety need extra protection from fire, water and physical damage. Those of us in the fire alarm industry know circuit integrity (CI) cable enhances survivability [Read More]
Archives for 2021
Are Smoke Detectors Required in Elevator Shafts?
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Top of Shaft Per ASME A17.1 Section 2.27.3.2.1(c), smoke detectors are only allowed in elevator shafts if there are sprinklers installed in the shaft. In Chicago, sprinklers are prohibited at the top of the shaft in non-CMS regulated facilities, so consequently no detection is allowed. If the elevator controller is located in the shaft in [Read More]
Illinois Accessibility Code Strobe Requirements
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The Illinois Accessibility Code (IAC) is the state version of the Americans with Disabilities Act (ADA). It’s not just amendments to the ADA. For lack of a better term, it is the ADA for Illinois. The Illinois Capitol Development Board (CDB) issued a new version in late 2018 to be applied to contracts for planning [Read More]
When Are Low Frequency Sounders Required?
As mentioned in our last post, per NFPA 72 Chap. 18.4.6, the sound level of in-unit alarm notification in sleeping areas has to be either 15 dB over ambient, 5 dB over the highest measured sound level having a duration of at least 60 seconds or 75 dB at the pillow, whichever is greater. 75 [Read More]
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