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• • <br /> MyBuitdingPermit.com <br /> a service of eCityGov.net Construction Tip Sheet 04 <br /> Alarms and Detectors on Walls and Sloped/Peaked/Coffered Ceilings per <br /> NFPA 72 <br /> ❑ Wall mounted alarms must be not more than 12 inches from the adjoining ceiling surface. <br /> (NFPA 72 29.8.3.3) <br /> ❑ Alarms in peaked or sloped ceilings must be within 3 feet horizontally and no closer than 4 <br /> inches vertically to the peak. Avoid placing alarms in dead air spaces; refer to Figure 1. (NFPA <br /> 72 29.8.3.1, 29.8.3.2, 29.8.3.4 (9), (10)) <br /> ❑ For coffered ceilings, alarms shall be installed on the highest portion of the ceiling or on the <br /> sloped portion of the ceiling within 12 inches vertically down from the highest point. (NFPA 72 <br /> 29.8.3.4 (11)) <br /> Avoid dead a space <br /> : <br /> Place alarm 's <br /> in this space Door)' <br /> 3, 3, <br /> < 3, <br /> 3IC } <br /> Where ceilings differ in height, nrrl— <br /> place alarms in highest location <br /> Figure 1: Smoke Alarms and Smoke Detectors in Sloped/Peaked Ceilings <br /> Specific Location Requirements per NFPA 72 <br /> ❑ Do not place alarms in spaces where temperatures may be above or below the alarm's <br /> operating temperature range. (NFPA 72 29.8.3.4 (1), (2), (3)) <br /> ❑ Avoid placing alarms within 3 feet horizontally from doors or openings to bathrooms containing <br /> a bathtub or shower. (NFPA 72 29.8.3.4 (6)) <br /> ❑ Do not place alarms within 3 feet from a supply register of a forced air heating or cooling <br /> system and it shall be installed outside of the direct airflow from those registers. (NFPA 72 <br /> 29.8.3.4 (7)) <br /> ❑ Do not place alarms within 3 feet of the blades of a ceiling fan. (NFPA 72 29.8.3.4 (8)) <br /> April 12,2021 MyBuildingPermit.com I Smoke,Heat&Carbon Monoxide Alarms 3 <br /> .0 yGov:net <br /> zZIO5 C erAyGovANiance <br />